A hot air balloon is acted on by two forces. One force is its weight, equal to
2448 newtons. The second force is a buoyant force acting straight up,
equal to 2448 newtons. What change in the motion of the balloon will
result from the action of these two forces?
no change
rising
falling
Answer:
no change
Explanation:
The Newton's Second Law of motion states that when an unbalanced force is applied to an object, it causes an accelerated motion in the object, in the direction of the unbalanced force. So, if there is no unbalanced force, then there is no motion. In this case both the forces have same magnitude and opposite direction. Therefore, the unbalanced force will be zero:
Unbalanced Force = Upthrust - Weight
Unbalanced Force = 2448 N - 2448 N
Unbalanced Force = 0 N
hence, there will be no motion in the vertical direction. Therefore, the correct option is:
no change
Why is the astronomical unit used to measure distances in the solar system?
Answer:Astronomers often use the astronomical unit to describe distances within solar systems because it is convenient and easier to understand. The astronomical unit (au or AU) is defined as exactly 149,597,870,700 meters (about 93 million mi), which is roughly equal to the average distance between the Sun and Earth.
Explanation: google
Which of the following describes exercise science?
O A. Examining how your diet influences the effects of exercise
OB.
Discovering the influence of exercise on your mood
OC. Evaluating how much muscle you gain after exercising
OD
All of the above
Answer:
C
Explanation:
An educated guess and also i think because it has the word muscle in it
I think the answer is D. All of the above.
but if not then it would be A. Examining how much diet influences the effects of exercise.
state three ways of conserving energy
energy drinks
sitting
watching TV
Answer:
use natural lights
turn off electrical appliances..if not in use
check your wires every next Month
Why is it difficult to climb on a mountain through vertical path than a curved path
Answer:
a curved path generally goes around all hills and higherpoints in a trail, unlike a straight path which would take you through every single terrain there is on the mountain.
For a less steep slope, less power is needed by the vehicle. The concept is that it will be easier for one to exert less control and that too for a more extended period. So the roads of the mountains are always made curvy and not straight.
Building a road on or around mountains is no simple task. Roads built on mountainsides take weeks, even months of planning and surveying just to determine where to put them. From there, the task becomes even more dangerous and hands-on, but with the help of some heavy machinery and months of work, roads are paved and finished for commuters.Roads are built on mountains by carefully surveying the region, then methodically cutting or blasting into the mountain's side. From there, roads are mapped and paved before being finished and ready for commuters to use.In this article, we'll look at the process of roads being built on mountains and all of the careful steps that go into planning a mountain road. Additionally, we'll answer some commonly asked questions about building roads on mountains.Learn more about mountain roads
https://brainly.com/question/13155000
#SPJ2
Help me plzzzz
Which product forms from a reaction between magnesium (Mg) and nitrogen
(N)?
A. MgN2
O B. Mg2N3
C. Mg3N2
O D. MgN
Answer:
C. Mg3N2
Explanation:
Magnesium has a positive 2 charge and nitrogen has a negative 3 charge. To completely balance it out, you need three magnesium’s and two nitrogen’s. The final charge for magnesium would be positive 6 and the final charge for nitrogen would be negative 6, this will make it neutral.
Answer:
C. Mg3N2
How I Know :
Hope this helps you ! good luck !
add me as a friend , ill add back so we can be friends !! <3
☆ REMINDER : ☆
☁ ˖⁺ stay safe we are still in the middle of a pandemic
☁˖⁺ drink plenty of water to stay hydrated
☁ ˖⁺ love yourself and know someone loves you
☁ ˖⁺ never give up and talk to someone if your feelings scared/sad/mad
☁ ˖⁺ its never okay to stay silent .
﹤୨♡୧﹥ have an amazing day/night
a race car is travelling at +76m/s when it slows down at -9m/s2 for 4 seconds. whats his new velocity?
Answer:
40 m/s. 1) Bumble bee jumps straight upwards with a velocity of 14.0 m/s. What is his displacement of after 1.80 s
I will mark a brainluest, And good ponits, Please help me out
Answer:
gas, liquid and the last one is opaque solid
Explanation:
Answer:
gas, liquid and the last one is opaque solid
Explanation:
Ahmad is riding his bicycle. He finds that he can accelerate from rest at 0.44 m/s^2 for 5 s to reach a speed of 2.2 m/s. The total mass of Christian and his bicycle is 54 kg. Later, he straps some cargo onto the back of his bicycle. The mass of the cargo is 12 kg.• Calculate the force that Christian can exert on his bicycle before picking up the cargo and exerts the same force on his bicycle.
Answer:
1) The force Christian can exert on his bicycle before picking up the the cargo is 529.74 N
2) The force Christian can exert on his bicycle after picking up the the cargo is 647.46 N
Therefore, Christian has to exert more force on his bike after picking up the cargo
Explanation:
The given parameters are;
The mass of Christian and his bicycle = 54 kg
The mass of the cargo = 12 kg
1) The force Christian can exert on his bicycle before picking up the the cargo = Mass of Christian and his bicycle × Acceleration due to gravity
∴ The force Christian can exert on his bicycle before picking up the the cargo = 54 kg × 9.81 m/s² = 529.74 N
2) The force Christian can exert on his bicycle after picking up the the cargo = (54 + 12) kg × 9.81 m/s² = 647.46 N
Therefore, Christian has to exert more force on his bike after picking up the cargo.
An apple and a stone dropped from certain height accelerates:Required to answer. Single choice.Immersive Reader
(1 Point)
equally.
differently.
depending on density.
depending on the position of the sun.
An apple and a stone dropped together from any height accelerate equally.
How much net force is needed to accelerate a 200 kg satellite 9.8 m/s2 ?
Answer:
1960 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 200 × 9.8
We have the final answer as
1960 NHope this helps you
at what angle work done is equal to zero
Answer:
work done=0 when angel between 2 objects is 90 degree
1. Which of the following is a unique feature of light waves?
Answer: they are compression waves
Explanation:
The unique property of light waves is that they do not require a medium for propagation.
Generally; waves are classified into electromagnetic waves and mechanical waves. Mechanical waves require a medium of propagation while electromagnetic waves do not require a medium for propagation.
Also, waves are classified into transverse waves and longitudinal waves. In transverse waves, the disturbance is perpendicular to the wave front while in longitudinal or compressional waves, the disturbance is parallel to the wave front.
Light is both an electromagnetic wave and a transverse wave. This means that it requires no material medium for propagation. This is the unique property of light waves.
Learn more: https://brainly.com/question/2673886
Suppose a 125 N force is applied to a lawnmower handle at an angle of 35° with the ground and the lawnmower moves along the surface of the ground. If the lawnmower moves 56 m, how much work was done? (hint: use cos to find the x of force vector)
Answer:
Workdone is 5734.06Nm.
Explanation:
Given the following data;
Force applied = 125N
Angle = 35°
Distance = 56m
To find the workdone by the lawnmower, we would first of all find the horizontal component of the force applied.
[tex] Horizontal force, Fx = mgCosd[/tex]
Where;
Fx represents the horizontal force. m is the mass of an object. g is the acceleration due to gravity. d is the angle of inclination (theta).mg = weight = 125N
Substituting into the equation, we have;
[tex] Fx = 125 * Cos35[/tex]
[tex] Fx = 125 * 0.8192[/tex]
Fx = 102.39N
Workdone is given by the formula;
[tex] Workdone = force * distance[/tex]
[tex] Workdone = 102.39 * 56[/tex]
Workdone = 5734.06Nm
Therefore, the work done by the lawnmower is 5734.06Nm.
Which of the following has the greatest mass?
A. star
B. moon
C. planet
D.galaxy
Answer: I think the answer is d
Explanation: sry if wrong
A cross- country skier moves from location A to location B to location C to location D. Each leg of the back and forth motion takes 1 minute to complete; the total time is 3 minutes . Wes =0 min t - 2min t = 3mim t = 1min 100 What is the distance travelled by the skier in the first 3 minutes? What is the net displacement of the skier in the first 3 minutes? - What is the displacement during the second minute? What is the displacement during the third minute?
Answer:
hello some parts of your question is missing attached below is the missing part
Answer :
a) 360 m
b) 120 m ( eastward )
c) -120 m ( westward )
d) 80 m ( eastward )
Explanation:
given data:
Each leg time = 1 minute
Total time = 3 minutes
t=0 t= 2 t = 3 t = 1
xo =0 x2 = 40 x3 = 120 x1 = 160
a) Distance travelled by skier in first 3 minutes
d = | x1 - xo | + | x2 - x1 | + | x3 - x2 |
= 160 + 120 + 80 = 360 m
b) net displacement in first 3 minutes
s = ( x1 -x0 ) + ( x2 - x1 ) + ( x3 -x2 )
= 120 m ( eastward )
c) displacement during the second minute
s1 = x2 - x1 = 40 - 160 = -120 m ( westward )
d) displacement during the third minute
s2 = x3 - x2 = 120 - 40 = 80 m ( eastward )
(a) The distance traveled by the skier in the first 3 minutes is 360.
(b) The displacement of the skier during the second minute is 120 west.
(c) The displacement of the skier during the third minute is 80 east.
The given parameters;
distance traveled in 1 min = 160 distance traveled in 2 min = 20distance traveled in 3 min = 120The distance traveled by the skier in the first 3 minutes is calculated as follows;
[tex]x = (120 - 40) + 120 + 160\\\\x = 360[/tex]
The displacement of the skier during the second minute is calculated as follows;
[tex]x= (x_2 - x_1)\\\\x = 40 - 160\\\\x = -120 \ \\\\x = 120 \ west[/tex]
The displacement of the skier during the third minute is calculated as follows;
[tex]x = (x_3 - x_2)\\\\x = 120 - 40\\\\x = 80 \ east[/tex]
"Your question is not complete, it seems to be missing the following information"
Learn more about distance and displacement here: https://brainly.com/question/17345815
Question 4 (point)
What is the charge of the nucleus for the atom below?
O a
varies
Positive
Oc
Od
Neutral
Negative
Answer:
Positive
Explanation:
Tbh I dont have an explanation I just wanted to give the answer but its for sure correct!
why black coats are preferable in winter than others
Answer:
the color black draws in heat as lighter colors reflect heat
Explanation:
PLEASE HELP ASAP
describe how the equations for gravitational force and electrostatic force are similar
high heels shoes are more likely to damage floor than flat shoes . do you agree? explain.
yesssss I am agree ......
Answer:
Yes, I agree. The pressure exerted upon the floor is larger for high heel shoes than flat shoes, hence causing more damage to the floor.
Explanation:
Pressure is force/area. High heel shoes have a sharp point at which they touch the floor, while flat shoes have a flatter surface at which they touch the floor. Due to you exerting the same force anyway, the area is smaller for high heel shoes.
As you might know, the smaller a denominator is, the larger the number is. As an example, 3/1 is larger than 3/2. 3/1 is 3, and 3/2 is 1.5. Hence, the force is larger for high heel shoes, and it will cause more damage.
Hope this helped!
A balloon is launched at 2.5 m every second, how far did it travel in 10 seconds?
Answer:
25 meters
Explanation:
1 sec is 2.5, 1x10 so 2.5x10=25
help!
Jerome solves a problem using the law of conservation of momentum. What should
Jerome always keep constant for each object after the objects collide and bounce apart?
velocity
mass
momentum
direction
Answer:
What shouldJerome always keep constant for each object after the objects collide and bounce apart? That would be Mass.
Answer:
B: Mass
Explanation:
Which situation provides the best evidence that a chemical reaction is taking place?
Help please !!!!
Answer:
A new product is formed
Explanation:
Physical reactions generally result in a change of state (solid, liquid, gas). Chemical reactions generally result in the production of a new product/ substance (structure/ properties are different than the intial reactants'... example= burning wood)
find the distance traveled in km when the average speed is 60 km per hour and the time taken is 3 and 1/2 hours
Answer:
210 km
Explanation:
60 x 3 1/2 = 210
the weight of a body floating in a liquid is
Answer:
The apparent weight is the weight of the body minus the weight of the liquid displaced. The body will float only when both the weights are same. In this case, the given body of weight W is floating and hence the apparent weight is zero.
Answer:
Zero
Explanation:
The apparent weight is the weight of the body minus the weight of the liquid displaced. The body will float only when both the weights are same. In this case, the given body of weight W is floating and hence the apparent weight is zero.
brainliest please help opposite 8n is 5n it could not come full picture
find the resultant force
Answer:
resultant force=16N→(TOWARDS THE DIRECTION OF 8N)
Explanation:
resultant force=8N+13N-5N
=16N→(TOWARDS THE DIRECTION OF 8N)
Consider again the objects you ranked by distance. Suppose each object emitted a burst of light right now. Rank the objects from left to right based on the amount of time it would take this light to reach Earth, from longest time to shortest time.a. star on far side of Andromeda Galaxyb. star on near side of Andromeda Galaxyc. star on far side of Milky Way Galaxyd. star near center of Milky Way Galaxy1. Orion Nebula2. Alpha Centauri3. Pluto4. The Sun
Answer:
Following are the solution to this question:
Explanation:
That light takes a very long time to hit the planet, and the object is far off the earth. The light of such an item near to the planet takes less time to enter it. The star is 2,5 million light-years from the Planet on the far side of the Andromeda Galaxy. But on the other hand, the moon is 15 crore miles from the earth, so sunlight is quickly reached on the ground as the other thing.
That milky way away from the earth is 66,500 light-years far, that distance between Earth and Orion nebula is 1,344 light-years, with such a distance of 4,367 light-years. The earth is 5.2261 trillion km apart from Pluto.
An object moves along the grid through the points A, B, C, D, E, and Fas shown below.
Find the distance covered by the moving object.
The object moves 3 km to the East, turns North for 1 km, turns west for 1.5 km, moves
north 0.5 km, and finally turns east for 0.5 km.
Answer:
Total distance = 6.5 km
Explanation:
Let the distance be denoted by the vectors drawn from A, B, C, D, E, and F.
Then the distance covered can be calculated by adding the vectors in the direction given.
Total distance = 3km + 1km+ 1.5km+ 0.5km+ 0.5km
Total distance = 6.5 km
If we were to find the displacement ( shortest distance) then the head to tail rule would be applied using the vectors.
A bike is traveling to the left with a speed of 27\,\dfrac{\text m}{\text s}27 s m 27, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction when the rider slams on the brakes. The bike skids for 41.5\,\text m41.5m41, point, 5, start text, m, end text with constant acceleration before it comes to a stop.
Answer:
Explanation:
Given
Speed v =27m/s
Distance covered after skidding = 41.5m
Acceleration a = ?
Using the equation of motion
v² =u²+2aS
27² = 0²+2a(41.5)
729 = 0+83a
a = 729/83
a = 8.78m/s²
Hence it's acceleration is 8.78m/s²
can somone pls help me??!! i’m very stuck
Answer:
R
Explanation:
Her distance from home and Time increase
the stops when she gets to the library
then her distance from home decreases while her time increases