What determines the atomic number of an atom?

What is the scientific rule that states that energy cannot be created or destroyed?

Which of the following is an example of measurement bias? a. a scale that reads zero when nothing is on it b. a stopwatch that stops immediately when the stop button is clicked c. a balance that always reads. 01 g d.

How can we magnetise a piece of iron.

If the moon were twice its present distance from earth, what would be the most noticeable effects on earth events

A cyclist rode an average speed of 10 miles per hour for 15 miles how long was the ride

A wave with a frequency of 30 Hz has a wavelength of 40.5 m. How fast is the wave traveling?

A soccer ball is sitting in the middle of a soccer field during a game. When the referee blows his whistle, one of the players runs toward the ball and kicks it as hard as he can.

A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

Charge: A piece of plastic has a net charge of + 2.00 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60 * 10-19 C)

How much heat is needed to raise the temperature of 6g of water by 18oC?