Question

Тело массой 5кг упало с высоты 10м на землю, при этом вся мех. энергия перешла во внутреннюю. Чему равно кол-во теплоты, выделившееся при этом?

Answer 1

Q=m*g*h=5*10*10=500 Дж    
Потенциальная энергия перешла во внутреннюю
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Answer 2

Calculation of the Amount of Heat Released

To calculate the amount of heat released when a body of mass 5 kg falls from a height of 10 m and all the mechanical energy is converted into internal energy, we can use the principle of conservation of mechanical energy.

The mechanical energy of the body is given by the formula:

E = mgh

Where: - E is the mechanical energy - m is the mass of the body (5 kg) - g is the acceleration due to gravity (approximately 9.8 m/s^2) - h is the height (10 m)

Substituting the given values into the formula, we have:

E = (5 kg) * (9.8 m/s^2) * (10 m) = 490 J Since all the mechanical energy is converted into internal energy, the amount of heat released is equal to the mechanical energy:

Q = 490 J

Therefore, the amount of heat released when the body of mass 5 kg falls from a height of 10 m and all the mechanical energy is converted into internal energy is 490 J.

Please note that the above calculation assumes ideal conditions and neglects factors such as air resistance and energy losses due to friction.