Which of the following best describes a magnet?

O

A. An object with two opposite charges

O

B. An object with a south pole

O

c. An object with two opposite poles

O

D. An object with a north pole

The half-life of carbon-14 is 5730 years. How long will it take for the number of carbon-14 nuclei in a sample to drop to a quarter of the original number? Enter your answer as a number years

Which units are used to measure mass and weight

What would happen if mass is continually added to a 1.4 solar mass neutron star?

How are mm hg torr psi atm and pa related to each other mathematically?

What is the behavior that takes place when two waves of equal amplitude collide abd sum up to a bigger wave.

2x^2:3=dg solve for x

A 2.25-kg block is released from rest on a ramp of height h. when the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.

Which of the following are steps for balancing chemical equations? Check all that apply. ] A. Multiply the reactants to get the products. B. Change subscripts. O C.

1. Why does the water vapour in clouds condense? 2. Explain why you can see clouds but not see the water vapour in the air

What are some similarities between electricity and gravity?