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DiKsa [7]
2 years ago
11

VERY URGENT GIVING BRAINLY​

Physics
1 answer:
lakkis [162]2 years ago
8 0

Answer:

A

Explanation:

There is a mechanical advantage in this system....

    she only needed 100 N to lift 500 N

        1:5      she lifted it 2 meters, so if there WAS NO friction, she would have to pull in 5 x 2 = 10 meters

   but there IS friction so she must have pulled in MORE than 10 m  

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Wilbur ran 1-kilometer. Then he ran 500 meters. How many meters did Wilbur run all together?
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What factors help determine the physical properties of liquids
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3 years ago
Two blocks of ice, one four times as heavy as the other, are at rest on a frozen lake. A person pushes each block the same dista
ANEK [815]

Answer:

The kinetic energy of the heavier block after the push is equal to the kinetic energy of the lighter block

Explanation:

Kinetic energy of smaller object

K=(1/2)mv^2

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Also, it is given that heavier object is four times the mass of lighter object and consider its velocity as V

kinetic energy of heavier block K '= (1/2) (4m) V^2

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[by Newtons laws of motion]

Also, v^2 = 2(F/m)S

Where S= displacement, F= force, u= initial velocity

So, K=(1/2)m[2(F/m)]S

\Rightarrow  K = FS

For heavier block ,

V^2 - u^2 = 2a'S

or,  V^2=2(F /4m)S

So,K '= (1/2)(4m)[2(F/4m)S

\Rightarrow  K'= FS

Therefore the kinetic energy of the heavier block after the push is equal to the kinetic energy of the lighter block

5 0
3 years ago
PLEASE HELP ASAP
otez555 [7]

Answer:

D: unconscious

Explanation:

Apex have a nice day :)

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