Convert 21.0 cm to inches

The speed of the fastest pitched baseball was 45 m/s, and the ball's mass was 145 g. How fast would a 59 g ball have to travel to have the same amount of momentum? 110 m/s 75 m/s 87 m/s 100 m/s

If the mass is 35g and the volume is 7mL what is thedenstiy in science

If a cannon is fired use a=F/m to explain what happens to the cannon and the cannonball.

Suppose the mass is pulled down to where the spring's length is 72 cm. When it is released, it begins to oscillate. What is the amplitude of the oscillation?

The force between two charges is 10 N. If the distance between the two charges is halved, what is the new force between the charges?

Two small plastic spheres between them has magnitude 0.22 N. What is the charge on each sphere is one the other? Explain whether it can be determined from the information give, whether the charges are positive or negative.

If it has enough kinetic energy, a moleculeat the surface of the Earth can escape the Earth's gravitation. The acceleration of gravity is 9.8 m/s2, and the Boltzmanns' constant is 1.38066*10-23 J/K.

True or False. Alcohol is toxic to most fruit flies, but fruit flies that metabolize alcohol quickly survive alcohol exposure better than normal metabolizers.

Aerobic exercise is exercise where oxygen is not present. Question options: True False

The force between a pair of. 005 charges is 750 N. What is the distance between them?