What determines whether or not work is being done?

You are holding a block of wood with dimensions 3 cm x 6 cm x 9 cm on the palm of your hand. Which edge must be touching your hand for you to feel the most pressure? O A. 6 cm x 9 cm side O B. 3 cm x 6 cm side O C.

A rocket is continuously firing its engines as it accelerates away from Earth. For the first kilometer of its ascent, the mass of fuel ejected is small compared to the mass of the rocket.

What is the relationship between the internal energy of a substance and its state of matter? A) As a gas loses internal energy it becomes a plasma. B) Closer packed atoms generally have more internal energy.

Suppose that you are on an unknown planet in a distant galaxy. Let the length of a physical pendulum be 1.02 m. In the physical pendulum experiment, the period is determined to be 0.25 s. What is the gravitational acceleration of this planet?

A science textbook has a mass of 2.2 kilograms. What is it's weight on earth and mars?

If there is a current of 15A in a circuit for 5 minutes, what quantity of electric charge flow through the circuit?

Which universal force acts on protons and neutrons in an atom's nucleus?

How many turns are in the secondary coil of a step up transformer that increases voltage from 30 V to 150 V and has seven turns in the primary coil?

What is a nuclear bulge? a) The bulging corner of a spiral galaxy consisting of gas in the shape of a spiral sphere that circles a galaxy b) The bulging center of a spiral galaxy consisting of debris in the shape of a flattened sphere that circles a

Your friend of mass 50 kg can just barely float in fresh water. Calculate her approximate volume.