A student proposes to cook a 7.4-kg turkey by dropping it from a height to the g

Question

A student proposes to cook a 7.4-kg turkey by dropping it from a height to the ground thinking that the conversion from mechanical to internal energy will raise the temperature of the bird to a desired 77 oC (170 oF). He knows that it takes 4200 Joules to raise 1 kg of turkey meat by 1 degree Celsius. If the bird is initially at 12.1 oC and assuming that heat can only be gained and not lost by the turkey in the process, how many times must he drop the turkey from a height of 11.6 meters?

Note: Do not try this at home.

Explanation / Answer

Apply,

loss of potential enrgy = gian in intenal enrgy
m*g*N*h = m*c*dT

9.8*N*11.6 = 4200*(77-12.1)

N = 4200*(77-12.1)/(9.8*11.6)

= 2398 times

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.