A427 g glass coffee cup is at a room temperature of 20◦c. it is then plunged into hot dishwater at 84◦c. if the temperature of the cup reaches that of the dishwater, how much heat does the cup absorb? assume the mass of the dishwater is large enough so its temperature doesn’t change appreciably and the specific heat of glass is 840 j/kg · ◦ c. answer in units of j.

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.

With i really need the correct answer!

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability