What minimum heat is needed to bring 100 g of water at 50 â c to the boiling point and completely boil it away? the specific heat of water is 4190 j/(kgâk) and its heat of vaporization is 22.6 ã 10 5 j/kg ?

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s. a. determine jay’s mass. b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

The law of reflection states that the angle of reflection is equal to the angle of

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane