A 10 kg crate of books is at rest on the floor. A 45 N force is applied to the crate making it accelerate at 2 m/s2. The force of friction between the floor and the crate is Newtons.

Work = force × a. work b. energy c. distance d. momentum

Give an example in which the electrical energy changes to light energy

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) =_