A rock has a mass of 210 grams and occupies a volume of 70cm. whatnis the density?

Why is it important to consider the experimental error in all the empirical results presented?

All of the follow are ways of measuring volume execpt: A.) Scale B.) Graduated cylinder C.) Meter stick D.) Tape stick

If 2 grams of element X combine with 4 grams of element Y to form compound XY, how many grams of element Y would combine with 46 grams of X to form the same compound?

What is the period of a pendulum? the length of the string the height to which the pendulum is first pulled back the number of times the pendulum can swing back and forth in one minute the time it takes for the bob to swing back and forth once

A man pushes on a wall with a force of 50N. what are the size and direction of the force that the wall exert on the man?

What is ___ heating of a liquid__ gas to liquid

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance