The trampoline behaves like a spring. If the first bounce on the trampoline depresses the trampoline surface by . Without worrying about energy losses, what is the characteristic spring constant of the trampoline?

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z