what does the density of an object tell you about the molecular arrangement of the atoms in an object

You are using a rotary encoder to determine the distance a robot has traveled. The rotary encoder is directly connected to one of the wheels that has a diameter of 10cm.

A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. the mass of the ball is 0.38 kg. the ball approaches the cushion with a velocity of + 2.50 m/s and rebounds with a velocity of - 1.90 m/s.

In any ecosystem, the size of a population A. may change over time. B. only depends on the population's reproductive rate. C. always stays the same. D. only depends on the amount of resources available.

Who revolves around who in the Earth, Sun and Moon system

When 597 J of heat are added to a gas, it expands. Its internal energy increases by 318 J. How much work does the gas do? (Unit=J)

All objects are attracted to each other by the force of a. weight. b. mass. c. inertia. d. gravity.

landslides and mudslides caused by lava flows are ___ deadly than the lava flow itself. a. more b. less

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor

Let's now apply our equations for the normal modes of open and closed pipes. On a day when the speed of sound is 345 m/s, the fundamental frequency of an open organ pipe is 690 Hz.