3 years ago

When you stretch a spring 13 cm past its natural length, it exerts a force of 21

1 answer:

8 0

Answer:

A. 1.6 N/cm

Explanation:

spring constant = 21/13 = 1.6 N/cm

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Alex787 [66]

C. Impulse and Momentum

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3 years ago

Naya [18.7K]

Answer:

Specific heat of liquid $1.258 \ J/g^0C.$

Explanation:

We know in thermal equilibrium :

Loss in heat by iron block = Gain in heat by liquid .

Specific heat of iron = 0.45 $J/g^0C.$ { source internet }

Now , loss in heat by iron block = $mC_{iron}\Delta T=450\times 0.45\times 57.6=11664\ J.$

Heat gain by liquid= $mC_{liquid}\Delta T=450\times C_{liquid}\times 20.6=9270\times C_{liquid}.$

Equating both we get :

$C_{liquid}=1.258 \ J/g^0C.$

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miv72 [106K]

in my opinion, c is the right answer

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Phantasy [73]

The answer is Velocity

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yaroslaw [1]

Answer:

No, because pressure is determined by force and the area over which that force acts.

Explanation:

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