Is a glass microscope slide a conductor or insulator

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline