What is the weight of a 20 kg box on the Earth?

A) 2 N

B) 20 N

C) 200 N

The importance of iron and copper physics

Two carts on a straight track collide head on. The first cart was moving at 3.6 m/s in the positive x direction and the second was moving at 2.4 m/s in the opposite direction.

The population in the United States in 2015 was 321 million people. It is projected to increase to 438 million people by the year 2050. If projections are true, the US population will increase % from 2015 to 2050

What happens when a molecule with a dipole is put in an electric field

What is occurring when a light wave goes through a pane of glass in a window? absorption transmission constructive interference destructive interference

I am looking for this answer : Which shows a correct order of steps in the scientific method? develop a hypothesis, analyze data, make observations, draw conclusions make observations, draw conclusions, develop a hypothesis, analyze data.

A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up) (unit = j)

A loop of wire is placed in a uniform magnetic field. (a) For what orientation of the loop is the magnetic flux a maximum? The plane of the loop is perpendicular to the magnetic field. The plane of the loop is parallel to the magnetic field.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started