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ad-work [718]
3 years ago
6

A weightlifter lifts a 250-kg mass 0.5 meters above his head, how much PEg does the mass have (Note: g=9.8 m/s2)? Round your ans

wer to the nearest whole number. J
Physics
2 answers:
morpeh [17]3 years ago
6 0

Answer:

1225 J

Explanation:

The Gravitational potential energy (PEG) gained by a mass lifted above the ground is given by

PE=mgh

where

m is the mass

g = 9.8 m/s^2 is the acceleration due to gravity

h is the height at which the object has been lifted

In this problem, we have

m = 250 kg

h = 0.5 m

So, the PE of the object is

PE=(250 kg)(9.8 m/s^2)(0.5 m)=1225 J

disa [49]3 years ago
4 0

Answer:

1225J

Explanation:

The Gravitational potential energy (PEG) gained by a mass lifted above the ground is given by

where

m is the mass

g = 9.8 m/s^2 is the acceleration due to gravity

h is the height at which the object has been lifted

In this problem, we have

m = 250 kg

h = 0.5 m

So, the PE of the object is

1225J

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lukranit [14]

Answer: option 1 : the electric potential will decrease with an increase in y

Explanation: The electric potential (V) is related to distance (in this case y) by the formulae below

V = kq/y

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From the formulae, we can see that q and k are constants, only potential (V) and distance (y) are variables.

We have that

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We see the potential(V) is inversely proportional to distance (y).

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Explanation:

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As more babies are piled into a shopping cart, and the velocity stays the same, what happens to its momentum?
vagabundo [1.1K]
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Question: What is the frequency of a wave that has a wave speed of 120 m/s and a wavelength of 0.40 m?

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