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Taya2010 [7]
3 years ago
9

Two objects are raised off the ground and one of them is three times as high as the other one. How do their potential energy com

pare?
Physics
1 answer:
DochEvi [55]3 years ago
3 0

The potential energy of any object depends on its mass as well as its height off the ground.

Potential energy = mass x gravity x height.

We don't have enough information to compare the potential energies of these two objects because we don't know their masses.

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Which of these substances has the greatest index of refraction?
Inessa05 [86]
D. diamond, is the best option..
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A rocket sled accelerates from 10 m/s to 40 m/s in 2 seconds. What is the average acceleration of the sled?
Dafna11 [192]

Answer:

15m/s²

Explanation:

Given parameters:

Initial velocity  = 10m/s

Final velocity  = 40m/s

Time taken  = 2s

Unknown:

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Solution:

Acceleration is the rate of change of velocity with time;

 Acceleration  = \frac{Final velocity   -  Initial velocity }{time}  

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6 0
3 years ago
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tatuchka [14]

Answer:

0.66

Explanation:

By using the formula

u = v^2 / r g

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u = 23.5 × 23.5 / (85 × 9.8)

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4 0
3 years ago
A bicyclist is in a 50-km race. She says she had an average velocity of 35.
zlopas [31]
The correct answer to this is (A. Units Only).

It shows that there is a velocity of 35, but the units are missing.
8 0
3 years ago
A steel cable with Cross Sectional Area 3.00cm² has an elastic limit of 2.40 x 10^8pascals. Find the maximum upward acceleration
bazaltina [42]

Answer:

Stress = F / A       force per unit area

A = 3.00 cm^2 = 3 E-4  m^2

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F/3 = 2.4E4 N  if force not to exceed limit   (= f)

f = M a

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3 0
3 years ago
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