When an object gains or loses electrons, it becomes ... ?

The breaker of a certain circuit installed in a house shuts down at 10 amps. Can we connect a water heat of 2 kW to a power outlet of 240 V in this circuit?

Block a, with a mass of 2.0kg, moves along the x axis with a velocity of 5.0m/s in the positive x direction. it su? ers an elastic collision with block b, initially at rest, and the blocks leave the collision along the x axis.

A pole vaulter at the top of his vault is 6.15 m in the air. if he has a gravitational potential energy of 4o42 j, what is his mass?

How much charge flows from a 6.0 v battery when it is connected across a completely discharged 15.7 μf capacitor?

A radioactive isotope of the element potassium decays to produce argon. If the ratio of argon to potassium is found to be 31:1, how many half-lives have occurred?

Which statement is correct about gasoline when it is burned? Heat energy is created by the gasoline. The total energy of the gasoline decreases. Chemical energy in the gasoline is destroyed. Chemical energy is transformed into heat energy.

The tilt of the Earth's axis of rotation changes over a period of 41,000 years. Which of these statements best predicts a long term effect of the changes in the tilt of the Earth's axis of rotation? a. The Earth's climate would change. b.

What do keratinized cells form?

Explain why Planck's introduction of quantization accounted for the properties of black-body radiation.

How and which waves travel either through a medium or a vacuum?