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lorasvet [3.4K]
3 years ago
12

A moving bumper car hits the back bumper of a stationary bumper car. The momentum of the stationary car increases. Which happens

to the momentum of the moving bumper car?
-it decreases
-it stays the same
-it is converted to inertia
Physics
2 answers:
kolbaska11 [484]3 years ago
7 0
It decreases because it gave its momentum to the other car.
Romashka-Z-Leto [24]3 years ago
5 0
"It decreases" is the one among the following choices given in the question that happens to the momentum of the <span>moving bumper car. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has actually come to your desired help.</span>
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Answer:

Mercury's natural state is where the atoms are close to each other but are still free to pass by each other. In which state(s) could mercury naturally exist?

Liquid is the answer

Explanation:

4 0
2 years ago
A woman with a mass of 52.0 kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.470 rev/s abo
Charra [1.4K]

Explanation:

It is given that,

Mass of the woman, m₁ = 52 kg

Angular velocity, \omega=0.47\ rev/s=2.95\ rad/s

Mass of disk, m₂ = 118 kg

Radius of the disk, r = 3.9 m

The moment of inertia of woman which is standing at the rim of a large disk is :

I={m_1r^2}

I={52\times 3.9^2}

I₁ = 790.92 kg-m²

The moment of inertia of of the disk about an axis through its center is given by :

I_2=\dfrac{m_2r^2}{2}

I_2=\dfrac{118\times (3.9)^2}{2}

I₂ =897.39 kg-m²

Total moment of inertia of the system is given by :

I=I_1+I_2

I=790.92+897.39

I = 1688.31 kg-m²

The angular momentum of the system is :

L=I\times \omega

L=1688.31 \times 2.95

L=4980.5\ kg-m^2/s

So, the total angular momentum of the system is 4980.5 kg-m²/s. Hence, this is the required solution.

8 0
3 years ago
C) An identical spring is pulled with a force or 75 N The elastie limit of the spring is 72N
tiny-mole [99]

Answer:

Spring cannot return to its original, since a part of its deformation is <u>plastic</u>, not <u>elastic</u>.

Explanation:

Physically speaking, stress is equal to the axial force divided by effective transversal area of spring. In addition, springs have usually a linear relationship between stress and strain in <u>elastic region</u>, since they are made of ductile materials. Axial force is directly proportional to axial stress, which is also directly proportional to axial strain.

Then, if force is greater than force associated with elastic limit of the spring, then spring cannot return to its original, since a part of its deformation is <u>plastic</u>, not <u>elastic</u>.

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3 years ago
How are astronomers able to observe and study black holes?
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Info: https://science.nasa.gov/astrophysics/focus-areas/black-holes
 

Hope this Helps! (:

5 0
3 years ago
If predators are increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.
12345 [234]
With an increase of predators, then the population will most likely decrease over the span of 5 years.
4 0
3 years ago
Read 2 more answers
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