The momentum of the car before the crash is 22500 kg m/s. The car stops in 0.14 s. a. Write the initial and final momentum of the car.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?