Dois móveis, A e B, movem-se de acordo com as funções horárias Sₐ = 5 + 3t e Sₒ = 15 + 2t, em unidades do Sistema Internacional.

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.

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?

A( developed during the process of technology design