200mg of uranium-238 has a half life of 4.5 billion years

How much will be left after 13.5 billion years

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current.

A car traveling at + 7.0 m/s accelerates at the rate of + 0.80 m/s2 for an interval of 2.0 s. Find vf.

A 1200-kg car, initially moving at 20 m/s, comes to a stop at a red light over a time of 3 s from the moment the driver hit the brakes.

Enrico says that positive charge is created when you rub a glass rod with silk, and that negative charge is simply the absence of positive charge.

A box of cleaning supplies weighs 15 n. If the box is lifted a distance of. 60 m, how much work is done?

What is the kind of energy that comes from movement?

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory C) Skeletal D) Nervous

What's the transmission of heat requiring the movement of a liquid or a gas is?