g Suppose that 3 J of work is needed to stretch a spring from its natural length of 36 cm to a length of 50 cm. (a) How much work is needed to stretch the spring from 40 cm to 42 cm? (Round your answer to two decimal places.) J (b) How far beyond its natural length will a force of 10 N keep the spring stretched? (Round your answer one decimal place.) cm

What is magnetic flux? explain faraday's law of induction.

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?