Thermal energy is produced in a resistor at a rate of 97.1 W when the current is 4.05 A. What is the resistance

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?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.