4. A block with a mass of 2.50 kg is resting on a ramp. If the coefficient of
static friction between the block and the
ramp is 0.350, what maximum angle can the
ramp make with the horizontal
before the block starts to slip?

Describe the path of the electric current through a circuit?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?