The nucleus of an atom can have either a positive or negative charge true false?

Critical mass is the ___ of material required to produce a chain reaction. A.) minimum amount B.) atomic mass C.) precise amount D.) maximum amount

How do changes in light wavelengths support the idea that the universe is expanding? A. Light from other galaxies shifts toward the blue end of the spectrum, which shows that the galaxies are moving away from Earth. B.

A washing machine is plugged into a wall outlet that has voltage of 240 volts. The total resistance present in the machine's wiring is 12 ohms. What current runs through this current

If you exert 250J of work onto a lever that is 5m long, what amount of force are you applying?

Example 1: A length of wire is cut into five equal pieces. The five pieces are then connected in parallel with the resulting resistance being 2.009. What was the resistance of the original length of wire before it was cut up?

The train traveled 500 kilometers north to Odessa in 2 hours. What's the train's speed? What is the velocity?

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

If you dive under-water, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum has an area of about 70 mm2 (7*10-5m2), and it can sustain a force of about 7 N without rupturing.

Why cant kinetic energy ever be greater than potential energy

For a stationary observer, when the source of a sound is moving, its pitch appears to change.