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Montano1993 [528]
3 years ago
10

This is an example of:

Physics
1 answer:
erica [24]3 years ago
4 0

Answer:

C. both

Explanation:

kinetic energy bcs it's moving and gravitational potential energy for it's descend.

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Antony Hewish

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Explanation:

6 0
3 years ago
A vertical spring with a spring constant of 310 N/m is mounted on the floor. From directly above the spring, which is unstrained
EleoNora [17]

Answer:

7.3cm above the compressed spring.

Explanation:

We can use the conservation energy theorem to solve this problem:

U_{1}+K_1=U_e+U_2+K_2\\m*g*h+0=\frac{1}{2}k*x^2+0+0\\\\h=\frac{k*x^2}{2*m*g}\\\\h=\frac{310N/m*(3.6*10^{-2})^2}{2*0.28kg*9.8m/s^2}\\\\h=0.073m

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8 0
3 years ago
Why sound heard better at night than at day?​
vodomira [7]

Answer:

it is because it is quieter at night than in the daytime. Therefore it is easy to hear the sound far away. However, it is only one of the reasons. Actually, sound transmits farther at night may be related to refraction of sound waves! First, sound is the vibration of air, and it is a kind of wave motion.

Explanation:

6 0
4 years ago
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What is the weight of a 5kg object at the surface of the earth?
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