Aprotostar is
1.a region of space from which light cannot escape
2.a small star that will continue as a main sequence star for hundreds of billions of years
3.a star with a core of neutrons
4.the stage after a star completes its main sequence existence
5.the stage before a star becomes a main sequence star

If jesus walked on water, does that mean he swims on land

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

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) =_