5. a kettle has a power of 1200 w (hint: 1200 w = 1200 j/s). if the kettle
takes 2.5 minutes to boil water, how much energy had been transferred?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25º, b) el tiempo que el balón permanece en el aire.