Electric charges of the opposite sign exert no force on each other. attract each other. repel each other. repel and attract each other. repel and attract each other depending on the magnitude of the charges.

Why are clouds considered to be a part of the hydrosphere?

Examples of buoyancy

What Kinetic Energy does the sack have just before it strikes the floor? -A 98.0 N sack of grain is hoisted to a storage room 50.0 m above the ground floor of a grain elevator.

A blank is a statement the summerizes a pattern found in nature

A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and receives a tone Doppler shifted by 200Hz, calculate the speed of the enemy submarine if the speed of sound in salt water

Which condition describes an object having terminal velocity? a. gravity > air resistance b. gravity < air resistance c. gravity = air resistance

All objects that have mass have gravity, and gravity pulls objects toward each other. A pencil has mass, and so does your hand. Yet a pencil drops to the floor when you let go of it. Why doesn't the pencil stick to your hand instead?

The radius of a car wheel is 3 inches. how far will the car travel in 10 revolutions of the wheel?

What happens to a muscle when you exercise it?

A certain rain cloud at an altitude of 1.80 km contains 3.20 107 kg of water vapor. How long would it take for a 2.90-kW pump to raise the amount of water from Earth's surface to the cloud's position?