Answer:
Power = 450 Joules / 50 seconds = 9 J/s = 9 W *average* power
Explanation:
Power = Energy / Time ( or Work / Time) just as Velocity = Distance / Time
So, the average power needed for 50 seconds to do 450 Joules of work is simply 450 J / 50 s = 9 J/s = 9 Watts (The unit Watt is defined so that 1 Watt = 1 Joule / Second). It's important to note that 9W is the *average* power. The problem does not say that Tyler does work at a constant rate, so it's worth adding that caveat to the answer!
fr.shah visits patients at their homes. the equation y=150x + 50 represents the amount she charges, where y represents the total cost and x represents the number of hours she spends at the home. when the equation is graphed, what does the y-intercept represent?
Answer:
50 represent the initial fee or cost added to the total cost
Explanation:
y=150x + 50
y represents the total cost and
x represents the number of hours she spends at the home.
Just like the slope intercept form y=mx + b; where m is the slope of the rate of 150 per hour and y is the total cost.
50 represent the initial fee or cost added to the total cost; in order words, 50 is the b value or where the cost is at 0 hours.
Y is what she charges just to make the trip and show up.
The patient owes her that 50 as soon as she rings the doorbell, before she spends any time there.
Two children are spinning on a miracle round. What is 50 cm from the center and the other is 100 cm from the center. Which child has the larger linear speed?
Answer:
The one that is 100 cm from the center.
Explanation:
Given that merry-go-round means moving at uniform circular motion or constant angular speed. Hence the person who is closer to the center is moving at a slower speed, while the one far away from the center has a larger linear speed because he has moved a long distance in the same amount of time, despite being on these objects.
To illustrate
A with the 50 cm
B with the 100 cm
Hence, to get speed, we have
A = 2 * pi * 50 / T
B = 2 * pi * 100 / T
And by the explanation of angular speed
We have w = 2*pi/T where w is the angular speed in radians/s
Hence we have
A = 50w
B = 100w
Therefore, the one that is 100 cm from the center has a larger linear speed.
Please answer this question...
1 Less and 2 greater!
A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 12.0 with a vertical drop of 2.00. We can ignore air resistance.
Answer: 18.8 m/s
Explanation:
A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 12.0 m with a vertical drop of 2.00 m. We can ignore air resistance.
What is the skater's initial horizontal velocity?
Answer: 18.8 m
How much force must a 40,000 W engine exert to get a car up to 75 m/s?
Edit: Answer - 533N
Answer:
Force = 533.33N
Explanation:
Given the following data;
Power = 40000watt
Velocity = 75m/s
To find the force;
[tex] Power = force * velocity [/tex]
Making force the subject of formula, we have;
[tex] Force = \frac {Power}{velocity}[/tex]
[tex] Force = \frac {40000}{75} [/tex]
Force = 533.33N
wheres my lil mama?
Answer:
Explanation:
I FOUND YOUUU
Answer:
300,000
Explanation:
right here dad_0 ;) u got snap?
You kick a soccer ball across a field the ball travels across the field and slowly comes to a stop. Since the ball slowly comes to a stop what does that mean about the acceleration of the ball?
Answer:
the acceleration is negative which means it is going in the opposite direction of the actual motion which concludes the reason why the ball is slowing down. However, when the ball is stopped, there is no acceleration as the ball is in equilibrium
Explanation:
What group is Ne in? What is its period?
Answer:
Neon (Ne), chemical element, inert gas of Group 18 (noble gases) of the periodic table, used in electric signs and fluorescent lamps. Colourless, odourless, tasteless, and lighter than air, neon gas occurs in minute quantities in Earth's atmosphere and trapped within the rocks of Earth's crust.
Explanation:
I am smart
Answer:
It is a Noble gas and its group is 18 or 8a and its period is 2.
Explanation:
the reason behind my answer is group is the column and the period is the row.
Explain what the wedge does with the downward force of the axe. Why is this useful to someone cutting wood?
Answer:
The wedge balances propelled force.
Explanation:
According to the laws of motion, when appropriate weight is employed properly, a ball can move a truck. The same basic functions apply in this scenario. You often find a woodcutter raising the axe and letting it fall into the wood. This allows force to equally generate at both sides of the axe, splitting the wood apart.
what is the direction of the sum of these two vectors?
Answer:
what is the direction of the sum of these two vectors?
Answer:
69.6
Explanation:
Ax= 0
Ay= 63.5
Bx= 101 cos 57= 55.009
By= 101 sin 57= 84.706
Tan-1 = (84.706/55.009)
= 69.6
Please help me with this
Answer:
a i. The higher curve is "thick wall" and the lower curve is "thin wall".
a ii. The thicker the wall, the more time it takes to transfer the same amount of heat. Thus, the thick wall would have a less steep drop in temperature as it transferred lesser heat from the room to the surroundings and the thinner wall would have a steeper drop in temperature as it conducted more heat away from the room to the surroundings.
Your car gets a flat! You go from 90 kilometers per hour to a stop in 6 seconds. What is your rate of deceleration? (it's negative!)
I need this ASAP!
Answer:
-15?
Explanation:
a change in the thermal energy of an object is related to the objects specific heat, heat temperature change, and mass. true or false
this is science BTW
true
think of a hurricane , for it to move it needs energy from the water (warm water).and one it gets on land which has less specific heat in it the hurricane ends
Answer:
True
Explanation:
Edge 2022
Which statement is
rue
about acceleration?
O A.
It is the rate of change of speed per unit time.
OB
It is the rate of change of displacement per unit time.
C.
It is the rate of change of velocity per unit time.
D.
It is the rate of change of position per unit time,
Answer:
A
Explanation: This is the correct answer
Answer:
yeyeyeyeyeye
Explanation:
Alex wants to take a small road trip over the weekend, but
needs to be back before Monday. He travels 450 miles and
it takes him 9 hours. What unit of measurement should
Alex be measuring his speed with
Answer:
Miles is the distance unit. Hours is the time unit.
Explanation:
A 0.50-kg red cart is moving rightward with a speed of 50 cm/s when it collides with a 0.50-kg blue cart that is initially at rest. After the collision, the blue cart begins moving rightward with a speed of 40 cm/s. The red cart is still moving rightward but has slowed down to a speed of 10 cm/s. Enter the momentum values (in kg•cm/s) of each individual cart and of the system of two carts before and after the collision. Also indicate the change in momentum of each cart.
Explanation:
Step one:
given data
mass of red cart m1=0.5kg
initial velocity u1 of red cart=50cm/s
mass of blue cart m2=0.5kg
initial velocity u2 of blue cart= 0cm/s
final velocity v2 of blue cart= 40cm/s
final velocity v1 of red cart= 10cm/s
Step two:
Momentum values red cart before and after the collision.
Before collision
P1=m1u1
P1=0.5*50
P1=25kg•cm/s
After collision
P2=m1v1
P2=0.5*10
P2=5kg•cm/s
Change in momentum= P1-P2=25-5= 20kg•cm/s
Momentum values blue cart before and after the collision.
Before collision
P1=m1u1
P1=0.5*0
P1=0 kg•cm/s
After collision
P2=m1v1
P2=0.5*40
P2=20kg•cm/s
Change in momentum= P1-P2=0-20= -20kg•cm/s
The total momentum of the system of the carts before collision is 25 kgcm/s.
The total momentum of the system of the carts after collision is 25 kgcm/s.
The change in momentum of the red cart is -20 kgcm/s.
The change in momentum of the blue cart is 20 kgcm/s.
The given parameters;
mass of the red cart, m₁ = 0.5 kginitial speed of the red cart, u₁ = 50 cm/smass of the blue cart, m₂ = 0.5 kginitial velocity of the blue cart, u₂ = 0final velocity of the blue cart, v₂ = 40 cm/sfinal velocity of the red cart, v₁ = 10 cm/sThe momentum of the red cart before collision is calculated as follows;
[tex]P_r_1 = m_1u_1\\\\P_r_1 = 0.5 \times 50\\\\P_r_1 = 25 \ kgcm/s[/tex]
The momentum of the blue cart before collision is calculates as follows;
[tex]P_b_1 = m_2 u_2\\\\P_b_1 = 0.5 \times 0\\\\P_b_1 = 0 \ kgcm/s[/tex]
The momentum of the red cart after collision is calculated as follows;
[tex]P_r_2 = 0.5 \times 10\\\\Pr_2 = 5 \ kgcm/s[/tex]
The momentum of the blue cart after collision is calculated as follows;
[tex]P_2b_2 = 0.5 \times 40\\\\P_2b_2 = 20 \ kgcm/s[/tex]
The total momentum of the system before and after collision is calculated as follows;
[tex]P_1 = 25 \ kgcm/s \ + \ 0 = 25 \ kgcm/s\\\\P_2 = 5 \ kgcm/s \ + \ 20 \ kgcm/s = \ 25 \ kgcm/s[/tex]
The change in momentum of the red cart is calculated as follows;
[tex]\Delta P_r = Pr_2 - Pr_1\\\\\Delta P_r = 5 - 25 = - 20 \ kgcm/s[/tex]
The change in momentum of the blue cart is calculated as follows;
[tex]\Delta P_b = P_b_ 2 - P_b_1\\\\\Delta P_b = 20 - 0 \ = \ 20 \ kgcm/s[/tex]
Learn more about conservation of momentum here: https://brainly.com/question/16636313
Which of the following objects had the greatest force applied to it? *
A) An object with a mass of 10 kg and an acceleration of 2.5 m/s^2
B) An object with a mass of 12 kg and an acceleration of 3.0 m/s^2
C) An object with a mass of 20 kg and an acceleration of 1.5 m/s^2
D) An object with a mass of 15 kg and an acceleration of 1.0 m/s^2
Answer:
B) is the answer
Explanation:
A) is 25 N
B) is 36N
C) is 30N
D)15N
If the box the man is carrying is very heavy, explain if he does any work as he walks across the room with it.
The amount of kinetic energy in a moving object depends on its mass and what
Answer:
Kinetic energy depends on mass and speed (or magnitude of velocity).
K.E. = 1/2 M S² or The amount of kinetic energy of a moving object has dependence on its mass and its velocity.
Explanation: They are both right for a certain question
The kinetic energy of a moving object depends on its mass and velocity. The higher the velocity higher will be the kinetic energy. Mass also have the similar effect.
What is kinetic energy?Kinetic energy of an object is the energy generated by virtue of its motion. When particles of an object acquire much energy to overcome the intermolecular force, they gain kinetic energy to move apart.
Kinetic energy is related to the mass and velocity of the moving object. The expression relating kinetic energy with these parameters is written below:
Ke = 1/2 mv².
As per the relation, the kinetic energy of an object increases with an increase in mass or velocity or both. Hence, massive objects with greater velocity is having greater kinetic energy.
Find more on kinetic energy:
https://brainly.com/question/15764612
#SPJ5
Why do people celebrate Christmas
Answer:
Yes, for most, but not all people.
Explanation:
HELP PLEASEEEE How might the concept of momentum be applied to seafloor spreading?
Answer:
the momentum of the earthExplanation:
Answer:
please mark me as brainlest
11/28/20 2:14 pm name tom
hello i hope this is what you needed
What does seafloor spreading result in?
Explanation:
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.
Leena is a 16-year-old girl. She complains of tiredness and loss of appetite. She is unable to concentrate on her studies and appears pale and unhealthy. Her mother took her to the doctor. The doctor told her that it was because of her poor diet. What condition is she likely to have?
Answer: Her condition most likely is fatigue.
Explanation:
work done per unit time :- a. force b. power c. energy d. momentum
how can we calculate acceleration in motion which is not uniform or uniformly accelerated please help tell me another formula to calculate acceleration
Answer:
These are some of the ones I found or know of.
Explanation:
F=ma
A= v-u/t
A= v^2/r
What is the mass of 2.5 mol of Ca, which has a molar mass of 40 g/mol?
Answer:100 g of ca
Explanation:
Every winter I fly to Michigan. It takes 5 hours. What is my average speed?
A plane flies at 400 north of East for 150 miles,then flies 200 miles at an angle of 150 west of North. What is the plane's final displacement? Show all work
Answer:
341.46miles
Explanation:
Find the diagram attachment.
To get the displacement D, we will use the cosine rule as shown;
D² = 200²+150²-2(160)(400)cos65°
D² = 40000+22500-128000cos65°
D² = 62500+54095.14
D² = 116595.14
D = √116595.14
D= 341.46 miles
Hence the plane final displacement is 341.46miles
Any one please give me the correct answer of this question???
I hope you can help me...
Answer:
no one ever amswers my questions
please help, question is timed...
Answer:
65
Explanation:
50+3*5
Extrusive (lava) igneous rocks form
under the earth's surface
from fragments of other rocks
when molten rock cools above the earth's surface
Answer:
when molten rock cools above the earth's surface
Explanation:
Extrusive Igneous Rocks Extrusive igneous rocks are formed when molten magma spill over to the surface as a result of a volcanic eruption. The magma on the surface (lava) cools faster on the surface to form igneous rocks that are fine-grained.