Was Copernicus heliocentric or geocentric

Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. does anyone know witch of newtons laws this is?

A bell is rung. What best describes the density of air around the bell?

The earth has a magnetic field much like a bar magnet. Explain this statement.

Which activity led to the formation of the Grand Canyon? deposition tsunami sedimentation erosion

Dalton was one of this first scientist to experiment prove that

No force is necessary to

A boat has a mass of 4040 kg. Its engines generate a drive force of 4660 N due west, while the wind exerts a force of 880 N due east and the water exerts a resistive force of 1400 N due east. Take west to be the positive direction.

Define the word projectile

Which is not a property of an electromagnetic wave? O It is made of magnetic fields It travels at the speed of light O It is made of electrical fields It carries energy only through matter

Explain why your weight would be less in the moon than on earth even though your mass would not change. Use the law of universal gravitation in your explanation.