What is the unit and tool to measure the mass of a rock?

2 dm expressed in millimeters

What is the force on an object that goes from 35 m/s to 85 m/s in 20 seconds and has a mass of 148 kg

Water drops are spherical because of? viscosity density polarity surface tension

Calculate the wave length of a water wave with a speed of 20 m/s and a frequency of 2.5 Hz A. 2 B. 5 C. 8 D. 12

A meteorite contains 0.17 g of nickel-59, a radioisotope that decays to form cobalt-59. The meteorite also contains 5.27 g of cobalt-59. How many nickel-59 half-lives have passed since the meteorite formed?

State the molecular theory of magnetism

A 0.50 kg croquet ball is initially at rest on the grass. When theball is struck by a mallet, the average force exerted on it is240 N. If the ball's speed after beingstruck is 3.0 m/s, how long was the malletin contact with the ball?

What is the speed of a 0.145kg baseball if its kinetic energy is 109J?

A student travels from st. louis to indianapolis, a distance of 210 mi, in 7.0 h. the return trip over the same route takes 6.0 h. what is the average speed for

If the velocity of a moving object doubles, then what else doubles?