A wheel of radius R and negligible mass is mounted on a horizontal frictionless axle so
that the wheel is in a vertical plane. Three
small objects having masses m, M, and 2 M,
respectively, are mounted on the rim of the
wheel, as shown.

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.)

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created