simple pendulum having a length of 1.54 m and a mass of 4.56 kg undergoes simple harmonic motion when given an initial speed of 1.97 m/s at its equilibrium position. Determine its period.

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *