Answer:
Hello your question has some missing part attached below is the missing part
How much work is done by the cog system on the cars?
answer : 2.053 * 10^7 J
Explanation:
Total weight of car ( wT ) = 5900 * 29 = 171100 N
mass of car ( mT ) = wT / g = 171100 / 9.81 = 17459.18 kg
Hence work done by the cog system on the cars
W = ( KE[tex]_{2}[/tex] + PE[tex]_{2}[/tex] ) - ( KE[tex]_{1}[/tex] + PE[tex]_{1}[/tex] )
= ( 1/2 mv^2 + mgh ) - ( 0 )
= ( 1/2 * 17459.18 * 0.50^2) + ( 17459.18 * 9.81 * 120 )
= 2.053 * 10^7 J
help please !!! determine the voltage
The voltage of given circuit is 5 volts.
What is Ohm's law?Explanation of Ohm's Law, the relationship between current, voltage and resistance. The amount of continuous current flowing through many materials is directly proportional to the potential difference or voltage between them. Therefore, if the voltage V (in volts) across a wire made of one of these materials is tripled, the current I (in amperes) is also tripled. The quotient V/I remains constant. The quotient V/I for a particular piece of material is called the resistance R and is measured in units called ohms. The resistance of materials that obey Ohm's law does not change over vast voltage and current ranges. Ohm's law can be expressed mathematically as V/I = R.
Given,
I = 0.5 Amp
As all the four resistors are connected in series, total resistance of the circuit is:
R = 1 + 2 + 3 + 4
R = 10 Ω
Using Ohm's law:
V = IR
V = 0.5 × 10
V = 5 volts
To know more about Ohm's law, visit:
https://brainly.com/question/1247379
#SPJ1
While spending the day relaxing on the beach, Keisha notices that the Sun appears to move across the sky. What is the best explanation for why this is happening?
a. Earth's revolution
b. the Sun's tilt on its axis
c. the Sun's revolution
d. Earth's rotation on its axis
While spending the day relaxing on the beach, Keisha notices that the Sun appears to move across the sky. The best explanation for this is the Earth's rotation on its axis.
So basically, the earth keeps on rotating about its axis constantly. The change from day to night is due to the phenomenon of Earth's rotation on its axis only. The sun remains fixed, but the earth rotates. So for a person on earth, it seems like the sun rises and moves across the sky and then sets, but in reality, it is the earth that rotates on its axis.
To know more about Earth's rotation on its axis, please refer to the following link - https://brainly.com/question/1808956
verify green's theorem for the disc d with center (0, 0) and radius r and the following functions.
The question is incomplete I answered in general way .
Green's theorem in vector calculus connects a line integral centered on a straightforward closed curve C to a double integral over the plane region D enclosed by C. It is Stokes' theorem's two-dimensional particular instance.
Green's theorem has numerous uses. One involves solving two-dimensional flow integrals, which states that the total amount of fluid emitted from a volume is equal to the sum of the outputs from all surrounding areas. Green's theorem can be applied to plane geometry, and in particular, area surveying, to find the area and centroid of plane figures by simply integrating over the perimeter.
One of calculus's four fundamental theorems, all of which are closely related to one another, is green's theorem.
To know more about Green's theorem
https://brainly.com/question/23261115
#SPJ4
an annulus with inner radius and outer radius lies in the plane. there is a constant electric field with magnitude , that makes an angle with the horizontal. what is the electric flux through the annulus?
To calculate the electric flux across a location, multiply the electric field by the surface area projected in a plane perpendicular to the field. On any closed surface, the universal law known as Gauss's Law is applied.
What is the sphere's electric flow like?In the case of a sphere-shaped Gaussian surface with radius r > R, the electric field is directed outward and has the same strength at every point along the surface. Simply multiplying the electric field by the spherical surface's area yields the electric flux.
What is the electrical flux formula?Electric flux (E) traveling through a surface of vector area S equals: E = ES = EScos if the electric field is uniform is the angle between the electric field lines and the normal (perpendicular to S), S is the area of the surface, and V/m is the magnitude of the electric field.
To know more about electric flux visit:-
https://brainly.com/question/14544020
#SPJ4
question: a 7.0 g bullet is fired into a 1.5 kg ballistic pendulum. the bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 9.4 cm. find the initial speed of the bullet.
The u1 =initial speed of the bullet= 490.86 m/sec is the correct answer.
What is linear momentum?Linear momentum is a vector quantity that describes an object's motion through space. It is calculated by multiplying the mass of an object by its velocity. Momentum is conserved in closed systems, meaning that it is not changed by any action within the system. This makes it a very useful tool for analyzing the motion of objects and predicting their behavior. Momentum can be transferred between objects, and is often used to describe collisions. It is also used to describe the effects of forces on objects, such as how a force can cause an object to accelerate or decelerate. Momentum is an important concept in physics, and can be used to describe a variety of physical phenomena.
Using conservation of linear momentum, we write
m1u1 + m2 u2 = m1 v1 + m2v2
where u1 ,u2 are the initial velocities of masses m1 and m2
where v1 ,v2 are the final velocities of masses m1 and m2
hence (.007) (u1) + 1.5(0) = 1.5(v2) + .007(200).........................1
using energy equation for the block alone we get
mgh = 1/2 m (v2)^2
hence 9.8(.094) =.5 (v2)^2
hence v2=1.357 m/sec
substitute it in 1
we get,
u1 =initial speed of the bullet= 490.86 m/sec
To learn about linear momentum
https://brainly.com/question/7538238
#SPJ4
following the inelastic collision of the carts, the two carts fuse into an object with double the mass of the original cart. there is then a frictional section of the track to slow the cart to a stop over 20 meters. describe the amount of work due to friction and frictional force exerted to stop both carts over 20 meters. calculate the work due to friction and frictional force. in your calculations, be sure to explicitly state the equations you use and what values you will be substituting to calculate the final value.
In the inelastic collision of the carts, the two carts fuse into an object with double the mass of the original cart. The works due to friction and the frictional force exerted to stop the two carts over 20 meters is 980 Joules.
What is inelastic collision?Generally, To calculate the work due to friction and the frictional force exerted to stop the two carts over 20 meters, we will need to know the coefficient of friction between the carts and the track, the mass of the two carts, and the acceleration due to gravity.
The equation for work due to friction is:
Work = Friction force * Distance
The equation for the friction force is:
Friction force = Coefficient of friction * Normal force
The normal force is equal to the mass of the two carts multiplied by the acceleration due to gravity:
Normal force = Mass * Gravity
We can substitute these equations into the equation for work to get:
Work = (Coefficient of friction * Mass * Gravity) * Distance
To calculate the work, we need to substitute in the values for the coefficient of friction, mass, gravity, and distance. Let's say the coefficient of friction is 0.5, the mass of the two carts is 10 kilograms, and the acceleration due to gravity is 9.8 meters per second squared. The distance the carts travel is 20 meters.
Substituting these values into the equation for work, we get:
Work = (0.5 * 10 * 9.8) * 20
Solving this equation gives us a final value for the work of: 980 Joules.
Read more about inelastic collision
https://brainly.com/question/14521843
#SPJ1
How is Hector an epic hero in the Iliad?
Hector is an epic hero in the Iliad due to his nature and best warrior abilities.
Hector is considered the bravest and strongest warrior among all the members of Trojan army. He proved his warrior skills by defeating Archean army when Achilles was absent. He lead the war and came back after winning. The Archeans had to leave.
Hector not only set the Archeans fire to ship but also killed Petroclus. The iliad also suggests that Hector was good in every role, as a son, husband, father and as friend as well. in
Learn more about Hector -
https://brainly.com/question/28342630
#SPJ4
zeke is attempting to learn more about his world. when he encounters a new object, he picks it up and puts it in his mouth. zeke is most likely in which of jean piaget’s stages of cognitive development?
It sounds like Zeke is most likely in Jean Piaget's stage of cognitive development known as the sensorimotor stage.
This stage typically occurs during the first two years of life, and it is characterized by the development of sensory and motor skills. Children in the sensorimotor stage use their senses and physical actions to explore and understand the world around them, and they learn about objects and their properties through direct interaction with them.
During the sensorimotor stage, children often engage in behaviors such as reaching for objects, grasping and manipulating objects, and putting objects in their mouths as a way of exploring and learning about them. These behaviors help children develop their sense of object permanence, which is the understanding that objects continue to exist even when they are not visible.
To know more about cognition
https://brainly.com/question/28147250
#SPJ4
Which graphs represent functions?
The graph D represents a function.
"A function is a relationship between a number of inputs and outputs." Simply described, a function is an association between inputs in which each input has exactly one output. There is range, codomain, and domain for every function.
We use the vertical line test to determine whether or not the graph accurately depicts a function.
If any vertical line crosses the graph at exactly one point, the graph represents the function; otherwise, it does not.
Observing the graphs, we can say that, the vertical line intersects the graph D at one point only.
Hence, graph D represents a function.
The question is incomplete. It does not contain graphs. It is attached in the attachment below.
To know more about functions:
https://brainly.com/question/19737343
#SPJ4
What is the formula for calculating phase shift?
Answer:
Phase shift {F(x)} = Asin(Bx-C) + D.
How are solar and wind different?
Solar electricity is less effective than wind power. In comparison to solar panels, wind turbines produce more energy overall, use less energy, and emit less CO2 into the atmosphere.
What distinguishes wind and solar energy?Solar energy is less effective than wind energy. The atmosphere receives less CO2 from wind turbines. Solar panels emit 70 grams of CO2 per hour, compared to 4.64 grams per hour from wind turbines.
What distinguishes solar panels from wind turbines?20% of the energy captured from the sun may be converted by the most effective residential solar panel on the market. In contrast, wind turbines may convert 60% to 90% of the energy they capture from the wind.
To know more about solar and wind different visit :-
https://brainly.com/question/24427668
#SPJ4
Two identical 1500k car moving perpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at15 m/s due east. What is the total momentum of the system?
The total momentum of the system is 22500 kg-m/s i + 37500 kg-m/s j.
Momentum is given by the formula,
P = m * v
where, m is mass
v is velocity
Given that,
Mass of the first car m₁ = 1500 kg
Mass of the second car m₂ = 1500 kg
Velocity of the first car v₁ = 25 m/s
Velocity of the second car v₂ = 15 m/s
The momentum of the first car is p₁ = m₁ * v₁ = 1500 * 25 = 37500 kg-m/s j
The momentum of the second car is p₂ = m₂ * v₂ = 1500 * 15 = 22500 kg-m/s i
The total momentum of the system is sum of momentum of both the cars.
⇒ 22500 kg-m/s i + 37500 kg-m/s j
To know more about momentum:
https://brainly.com/question/26021966
#SPJ4
What best describes a scrum team TCS?
A Scrum Team can be described as an autonomous and a cross-functional team that works on developing product.
It is described as "a framework that enables people to manage complicated adaptive challenges while productively and innovatively producing goods of the greatest quality." Just enough preparation is done upfront by the entire team, then ongoing planning continues throughout the project. Scrum is a project management system that prioritizes collaboration, responsibility, and incremental advancement toward a clear objective. The framework starts with a straightforward directive: Begin with what is visible or understandable. The team begins to have a defined velocity for their work as they get to the performing stage. Small but with sufficient members to produce Product Increment Work together as a team to plan your own workload. Members of the team must be experts. Reports to the Product Owner from Cross Functional.
to know more about Scrum Team please visit.
https://brainly.com/question/30087003
#SPJ4
Organizational commitment has been found to be positively correlated with all of the following exceptan employee's agean employee's time on the job.an employee's level of educationthe current job market.2 pointsQUESTION 2Shannon is given random bonuses of varying amounts throughout the year based on "how well the company is doing." She is being reinforced using afixed ratio schedule.variable ratio schedule.fixed interval schedule.variable interval schedule.2 pointsQUESTION 3Glass created a computer game experiment whose results indicated that Type A subjects?Showed a significantly higher physiological stress response rates than the Type B subjects, but recovered back to baseline rates as quickly as the Type Bs.Showed significantly lower physiological stress response rates than the Type B subjects.Showed similar physiological stress response rates to the Type B subjects in the game, but had a signficantly higher stress response to the "harrass" condition.Showed significantly higher stress response rates but beat the game more times than the Type B subjects.2 pointsQUESTION 4According to goal-setting theory, the key determinants of motivation in the workplace arejob satisfaction and the accomplishment of goals.monetary incentives associated with meeting goals.specific, challenging opportunities and commitment to goals.specific, challenging opportunities and organizational policies directed at goal attainment.2 pointsQUESTION 5There is a negative correlation between age and voluntary absenteeism.TrueFalse
Current Job Market, Variable Ratio Schedule, Type A subjects recover to baselines rates much slower than Type B subjects., Specific challenging activities and commitment to goals,True
1) Current Job Market
Numerous studies have demonstrated a favourable correlation between organisational dedication and an employee's age, tenure, and educational attainment.
2) Variable Ratio Schedule
A reinforcement that strengthens behaviour after an erratic number of responses is known as a variable-ratio schedule.
3). Individuals with Type A personality commonly exhibit traits such as competitiveness and assertiveness, high levels of aggression and impatience, always associate themselves with winning than losing (i.e. achievement-oriented), and functioning at a quick pace. Most of them are highly dedicated to work and therefore force themselves into things that may not necessarily be interesting for them.
In the computer game experiment, Type A subjects are likely to show significantly higher stress response rates but beat the game more often than Type B subjects. Although both type A and B subjects are exposed to the same stress levels, Type A subjects experience more physiological stress and are likely to function better at those stress levels. Moreover, Type A subjects recover to baselines rates much slower than Type B subjects.
4) Specific challenging activities and commitment to goals
According to Locke's theory of goal setting, situations that are challenging and conscious objectives drive human behaviour.
5) True
According to numerous research done to ascertain the connection between age and absenteeism.
Learn more about Variable Ratio Schedule here:
https://brainly.com/question/15175372
#SPJ4
Puck b has 2ma the mass of puck a. Starting from rest, both pucks are pulled the same distance across frictionless ice by strings with the same tension. How much is the final speeds of pucks a and b.
The final speed of pluck a is [tex]\sqrt{2}[/tex] times the speed of pluck b.
So we know, F= ma ( m is the mass of the particle and a is the acceleration )
Mass of pluck b =2m
Mass of pluck a = m
The tension in the string is the same and also the surface is frictionless. Hence, the only force acting on both the pluck is the force of tension 'T' .
acceleration of pluck b = T/2m
acceleration of pluck a =T/m
Let the distance traveled by both of them be 's'.
The initial velocity of both the plucks is 0.
We know v²-u² = 2as
u=0 for both plucks.
vₐ²-0 = (2)(T/m)(s)
=> Vₐ= [tex]\sqrt{\frac{2Ts}{m} }[/tex]
Similarly, Vb =[tex]\sqrt{\frac{Ts}{m} }[/tex]
Hence we can easily see, the velocity of pluck a is [tex]\sqrt{2}[/tex] times the speed of pluck b.
To learn more about velocity and force, please refer to the following link - https://brainly.com/question/29383005
Is the value of lambda constant?
Lambda is the symbol for wavelength it isn't a constant there for no standard value
it is linked to frequency:
frequency x Wavelength = speed of light (3x10^8)
What is lambda?
Lambda λ is a letter from the Greek alphabet.In physics, lambda λ is mainly used as a variable to denote or denote the wavelength of any wave.In nuclear physics and radioactivity, lambda is used to denote the decay constant of radioactivity.When it comes to electric fields, lambda is also used to denote the linear charge density of a uniform line of electric charge.To know more about lambda, click the link given below:
https://brainly.com/question/3985120
#SPJ4
018 (part 1 of 2) 10.0 points A jet aircraft is traveling at 232 m/s in horizontal flight. The engine takes in air at a rate of 117 kg/s and burns fuel at a rate of 4.8 kg/s. The exhaust gases are ejected at 723 m/s relative to the aircraft. Find the thrust of the jet engine. Answer in units of N. 019 (part 2 of 2) 10.0 points Find the delivered power. Answer in units of W.
The thrust of the jet engine is 59804 N and the delivered power is 1.388 MW.
What is thrust?Thrust is defined as the amount of effort required to move an airplane through air that is resisting its passage called drag. Newton's Second and Third Laws could be used to quantitatively explain the reaction force of thrust.
Given
Speed = 232 m/s
Air intake =117 kg/s
Fuel burn rate = 4.8 kg/s
Speed of exhaust gas = 723 m/s
Rate of mass change = 117 kg/s + 4.8 kg/s
= 121.8 kg/s
Thrust T = 121.8 x 723 - 121.8 x 232
Thrust T = 88061.4 - 28257.6
Thrust T = 59804 N
Delivery power = 232 x 59804
Delivery power = 1.388 MW
Thus, the thrust of the jet engine is 59804 N and the delivered power is 1.388 MW.
To learn more about thrust, refer to the link below:
https://brainly.com/question/26712174
#SPJ1
What does an inclined plane decrease?
An inclined plane creates a mechanical advantage that reduces the effort required to lift an object to a particular height, but it also lengthens the distance the object must travel.
The slope and height of an inclined plane determine its mechanical advantage. Divide the length of the slope by the height of the slope to determine the ideal mechanical advantage of an inclined plane. A mechanical advantage is created by an inclined plane to lessen the effort required to lift an object to a specific height, but it also lengthens the distance the object must travel. To move the distance and the height of an object going up an inclined plane, the object must move the complete length of the slope of the plane. For instance, if your ramp is 20 meters long and rises 5 meters high, your trade-off is between going 20 meters instead of lifting 5 meters straight up, and your ideal mechanical advantage is 4.
To learn more about inclined plane Please click on the given link:
https://brainly.com/question/26262923
#SPJ4
anything that alters behavior is considered a
It is occasionally regarded as a mental illness, but it is also a method for treating such illnesses.
What does psychology mean by behavioural change?
1. a methodical strategy for using operant conditioning to modify behaviour.
2. Any change in behaviour that has an impact on a patient's functioning, whether it results from psychotherapeutic or other interventions or just happens naturally.
What causes a change in behaviour?
After going through a stressful scenario or seeing an unpleasant incident, a person's mood could change. These behavioural alterations could be the result of a mental health issue, such as: Anxiety:
Anxiety is a feeling of nervousness or uneasiness about a situation.
To know more about Mental Health
Visit:
https://brainly.com/question/20273452
#SPJ1
What is the relationship between frequency and wavelength direct or inverse What is the relationship between frequency and energy direct or inverse?
Wavelength & frequency were related to energy in the same way that they are to light.Greater energy is correlated with shorter wavelengths and higher frequencies.E = hv is the energy equation.
Is there an inverse or direct link between frequency and energy?For an electromagnetic wave, the connection between frequency & energy is as follows.The electromagnetic wave's energy (E) is equal to its frequency times Plank's constant (h) (f).
What connection exists between energy, frequency, and wavelength?A wavelength's frequency & energy (E) drop as it gets longer.You may conclude from these equations that wavelength gets shorter as the frequency rises.The wavelength lengthens as the frequency drops.
To know more about frequency and energy visit:
https://brainly.com/question/4671819
#SPJ4
a race car starts from rest on a circular track of radius 400 m. the car's speed increases at the constant rate of 0.547 m/s2. at the point where the magnitudes of the centripetal and tangential accelerations are equal, determine (a) the speed of the race car, (b) the elapsed time, and (c) the distance traveled
The speed of the race car is 14.142 ms−1.
The amount of time that passes between an event's beginning and its conclusion is known as the elapsed time. The time that has gone between the start and finish of an event is known as the elapsed time, to put it simply.
Calculation:Centripetal acceleration ac is given by the expression
ac=Rω
2=v2R
where
v is linear velocity of the object, ω is its angular velocity and R is the radius of the circle in which object moves.
Tangential acceleration at is given to be =0.500 ms−2
Equating the magnitudes of two and inserting value of R
we get v2400=0.500
⇒v=√0.500×400=√200=14.142 ms−1
To know more about Centripetal visit:-
https://brainly.com/question/14249440
#SPJ4
1. Predict the change in capacitance of a parallel plate capacitor as the area of the plates is increased. 2. Predict the change in capacitance of a parallel plate capacitor as the separation between the plates is increased. 3. Briefly describe the observations you will make in Activity 1-2 of the lab to test one of these two predictions. 4. If you have two identical capacitors, what do you predict will be the capacitance of the two connected in parallel? 5. Briefly describe the observations you will make in Activity 2-1 of the lab to test this prediction. 6. What devices will you use to measure the decay of voltage in an RC circuit?
The capacitor is the energy storage device in the form of electrical energy and the capacitance is the ratio of charge and potential difference between capacitors.
The capacitance in the parallel plate capacitor is directly proportional to the area of the conductor and inversely proportional to the distance between the capacitors. The unit of capacitance is Farad(F).
1) Capacitance of the parallel plate capacitor is directly proportional to the area of the conductors and hence Area increases, the capacitance also increases.
2) Capacitance is inversely proportional to the distance between the capacitors and hence distance between the capacitors increases, Capacitance decreases.
3) C = ε₀A/d, where A is the area of the capacitor and d is the distance between the capacitor, and C is the capacitance of the capacitor. The capacitance of the parallel plate capacitor is directly proportional to the area of the parallel plate capacitor and d is the distance of separation of plates.
4) If two identical capacitors are connected in parallel, the potential across the capacitors are same and the charge in the capacitors is different.
5) If the system has two capacitors connected in parallel, the charges remain unchanged and hence the net charge is equal to the individual charges of the capacitors. The net charge of the system is, Q = Q₁+Q₂. Q₁=C₁V and Q₂=C₂V, Q = V(C₁+C₂).
6) The device used to measure the decay of voltage in an RC circuit is the voltmeter. Voltmeter is a device used to measure the potential difference between two points.
To learn more about Capacitanace:
https://brainly.com/question/17481839
#SPJ6
how can observations of nonscienists, like fisherman be of value to scientists
The way that observations of nonscientists, like fisherman be of value to scientists is that:
By taking part in data-less stock assessment procedures, which attempt to estimate the spawning potential of a specific fishing population by only determining the size at maturity for a certain species, fishermen can contribute to the science of fisheries.What is observation and why is it important to scientists?In science, observation is vital. Scientists gather and record data through observation, which allows them to create and subsequently test ideas and hypotheses. Scientists can observe in many different ways, using their own senses or instruments to increase their vision or hearing.
Science actually takes cultural values into account. In turn, values can be objective if they are founded on widely acknowledged concepts. In contrast, scientists prioritize verifiability, testability, accuracy, precision, generality, and simplicity.
Therefore, In terms of receiving financing and being able to communicate their work to their peers in a way that is clear and understandable, being able to discuss their findings with both scientists and nonscientists is essential for their own professional advancement.
Learn more about observations from
https://brainly.com/question/584814
#SPJ1
What does the 2+ in mg2+ represent?
2+ in [tex]Mg^{2+}[/tex] represents that for becoming stable magnesium needs to release 2 electrons.
As, the atomic number of Magnesium = 12
So, the electron distribution will be like 2, 8, 2
As here, we can see, 2 electrons are present in the outermost orbit of Magnesium, due to which magnesium is not stable.
In order to become stable, Magnesium needs to release its 2 electrons.
After releasing 2 of its electrons, there will be 8 electrons in the outermost orbit of magnesium, and due to the octet in the outermost orbit, magnesium becomes stable.
For more questions on Chemical Bonding:
https://brainly.com/question/25385832
#SPJ4
a cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift 1s performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spe- lunker is accelerated to a speed of 5.00 m/s; (b) he is then lifted at the constant speed of 5.00 m/s; (c) finally he is decel- erated to zero speed. how much work is done on the 80.0 kg rescuee by the force lifting him during each stage
Answer:
Below
Explanation:
Work = force x distance ==> the forces during the 3 stages are different
a) I will assume accel is constant for the first 10 m
Average velocity = 5/2 = 2.5 m/s
10 m / 2.5 m/s = 4 seconds
then a = 5 m/s / 4 s = 1.25 m/s^2 <==this accel is added to 'g'
F = ma
= 80 * (9.81 + 1.25) = 884.8 N
W = 884.8 * 10 = 8848 J
b) This one is easier W = F * d = (80)(9.81)(10) = 7848 J
c) Now we decelerate at 1.25 m/s^2 <==== this SUBTRACTS from g
W = ( 80 )(9.81-1.25)*10 = 6848 J
Answer:
C
Explanation:
Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed. C
describe the evolution of an elliptical galaxy. how does the evolution of a spiral galaxy differ from that of an elliptical?
The evolution of an elliptical galaxy involves a gradual decrease in star formation and a steady increase in its size.
Over time, gas and dust are depleted, leaving behind an aging stellar population and a low level of star formation. As star formation declines, the galaxy's mass slowly increases, forming a larger and more elliptical shape.
The evolution of a spiral galaxy is different in that the spiral structure is maintained over time. Gas and dust are continually replenished, providing the necessary materials needed for ongoing star formation. As a result, the stellar population remains young and active, and the galaxy maintains its distinct spiral shape.
Learn more about Galaxy here:
https://brainly.com/question/17117676
#SPJ4
What force causes the resistance of sliding of one surface over another?
Friction is a force that prevents two solid objects from rolling or sliding over one another. It's possible that frictional forces, like the traction required to walk while slipping, are advantageous.
What kind of force is necessary to slide two sliding surfaces past one another?A body rolling over a rough surface causes friction. Its coefficient of friction, or or Cf, indicates how rough the surface is. By dividing the normal force by the coefficient of friction, the friction force is calculated. Motion is constantly opposed by the frictional force.
What is the term for when two objects slide over one another?When two items move against one another, like in the case of the books on the table, sliding friction occurs. Because the two things are in contact, sliding friction results.
To know more about forces visit :
https://brainly.com/question/13191643
#SPJ4
how long will a bus take to travel 150 km at an average speed of 40km/h
Answer:
3.75 hours
Explanation:
Take 150 divided by 40 = 3.75 hours
Answer:
3.75 hours
Explanation:
The formula for finding time (how long) is t = s/v where s is distance, v is speed and t is time.
We know that the distance that a bus wants to travel is 150 km with an average speed of 40 km/h. Therefore, substitute s = 150 km and v = 40 km/h in the formula:
[tex]\displaystyle{t=\dfrac{150 \, \text {km}}{40 \, \text {km/h}}}\\\\\displaystyle{t=3.75 \, \text{hours}}[/tex]
Therefore, it’ll take about 3.75 hours for a bus to travel 150 km distance.
does anyone knows the answer for this question
Answer:
ofc it is D because the distance is far and the plane is the fastest.
Explanation:
Answer:
The answer is A
Explanation:
Most postal company hany ships with large amounts of mail because it is the cheapest way to send mail.
The greater efficiency achieved with the curved blades of a Pelton wheel is due to ____.
The greater efficiency achieved with the curved blades of a Pelton wheel is due to the fact that the curved blades are able to extract more kinetic energy from the moving water.
This is because the curved blades are able to direct the water onto a smaller area of the wheel, which results in a higher impact force and a greater transfer of energy from the water to the wheel.
In contrast, flat blades are not as effective at extracting kinetic energy from the water because they do not focus the water onto a smaller area of the wheel. As a result, the impact force is lower and less energy is transferred from the water to the wheel.
The Pelton wheel is a type of impulse turbine that is used to harness the energy of falling water in hydropower plants. It consists of a wheel with curved blades mounted on a shaft, which is turned by the impact of water jets that are directed onto the blades. The efficiency of the Pelton wheel can be improved by using a greater number of blades, which can increase the impact force and the transfer of energy from the water to the wheel.
To know more about Pelton
https://brainly.com/question/20038787
#SPJ4