To lift a baby from a crib 50 J of work is done. How much power is needed if the baby is lighted in 0.5s?

With i really need the correct answer!

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n