Wich of the following is a contact force?

a. - friction

b.-magnetism

c.-gravity

d.-electricity

The net charge of 3 mol of protons is a) 4.81*10 4 C. b) 3.00 C c) 4.81*10 - 19 C d) 2.89*10 5 C

In a lab environment, you are investigating the impulse of a force exerted on a brick when the brick's speed is reduced from 2.5 m/s to a complete stop.

A new grill has a mass of 30.0 kg. You put 3.0 kg of charcoal in the grill. You burn all the charcoal and the grill has a mass of 30.0 kg.

The planet most noted for its rings is A. Neptune. B. Mercury. C. Saturn. D. Venus.

Choose all the ways that charged can be transferred.

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?