Question

rise IS what the a 23. A1 kg hammer, moving with a velocity of 25 m/sec. strikes a 50 g fron nail driving it into a block of wood. If half of the energy goes into heating the nail, what will be its rise in temperature? (specific heat of iron = 0.1 cal/g°C) [a: 7.44°C] lik is °C]​

Answer 1

Answer:

It is known that W=JQ

Putting Values according to question:

W=JQ⇒

2

1

(

2

1

Mv

2

)=J(m.c.Δθ)

⇒

4

1

×1×(50)

2

=4.2[200×0.105×Δθ]⇒Δθ=7.1

∘

C

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Explanation:

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