a temperatura de um 100g de um líquido cujo calor específico é 0,5cal/g°C sobe de -10°C até 30°C. Em quantos minutos será realizado esse aquecimento com uma fonte que fornece 50 cal por minuto?

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain