Which two objects attract each other?

A.

a proton and an electron

B.

two electrons

C.

a proton and a neutron

D.

two protons

Beth walked to the school in 80 seconds from a position 100 m west of the school. what was her velocity?

A plastic rod that has been charged to - 21 nc touches a metal sphere. afterward, the rod's charge is - 8 nc.

Question A: If the gastropods listed in line 3 and line 6 were collected from shale containing leaf fossils what would their possible age be? Question B: Could you use radiocarbon dating to assign a numerical date/age to this rock unit? Explain

3. A powerful motorcycle can produce an acceleration of while traveling at 90.0 km/h. At that speed the forces resisting motion, including friction and air resistance, total 400 N. (Air resistance is analogous to air friction.

The principle of conservation of momentum is most similar to which of newton's laws of motion?

In what state do hydrogen and helium exist in a star

13) The frequency of a vibrating string varies inversely as its length. A string 3 feet long vibrates 175 cycles per second. Find the frequency of a 5 foot string.

Match the following. 1. energy a push or a pull 2. mechanical energy energy of a moving object 3. kinetic energy a force directed away from an object 4. heat the ability to do work 5. work a force moving an object through a distance 6.

Scientists hypothesize that oxygen began to accumulate in earth's atmosphere of living things with the ability to?

The 3 stages of the water cycle are