The tip of a pinwheel is 0.20 m from the center. The pinwheel spins 4 times each second. What is the tangential velocity of the tip of the pinwheel?

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?