A mixture consists of saw dust, salt, and pebbles. Which of the following instruments or materials would not be useful in separating this mixture?

magnet

filter paper

screen

water

The moon orbits the earth at a distance of about 60 earth radii away. However, its gravitational pull is still large enough to cause the ocean tides on the earth.

Current is the flow of what?

According to Bode's Law a planet is missing between Jupiter and Saturn. True False

What s the value of work done on an object when a 10-newton force moves it 30meters and the angle between the force and the displacement at 25 degrees

A mystery substance is found to be a very strong base. What will its pH most likely be?

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?

The law of conservation of energy states that A) energy may be created, destroyed or transformed. B) energy may be created, but only in certain types of nuclear reactions. C) energy may neither be created nor destroyed; it may only be transformed.

Pushing a rock from a hill top is called