A rider at an amusement park experiences forces of 275 N and 135 N to the right, and a force of 335 N to the left. a) What is the net force acting on the rider? (Assume the right direction is positive.) b) If the rider has a mass of 72 kg, what is their acceleration?

An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r

Atomic nuclei of almost all elements consist of

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j