Which scientist discovered the two radioactive elements radium and polonium?

Two small heavy balls have the same diameter but one weighs twice as much as the other. The balls are dropped from a second-story balcony at the exact same time. The time to reach the ground below will be ...

Which value is equivalent to 178 centimeters? a. 1.78 millimeters b. 17.8 millimeters c. 1.78 meters d. 1.78 * 10-2 micrometers e. 1.78 * 10-5 kilometers

Refraction is a bending that occurs when a wave moves from one medium to another at an angle and changes speed.

I am a liquid if you mix me with water i float on top but if you mix me with gasoline i sink what am i.? options air alcohol aluminum cork cornsyrup diamond gasoline glycerin gold ice iron lead marble mercury rubber silver steel water

Landslides and mudslides can result from both volcanoes and earthquakes. true false

A vitamin called folic acid is very important for neural tube development, which is the development of the baby's

Which vocabulary term is survival of the fittest

An object weighs 32 newtons. What is its mass if a gravitometer indicates that g = 8.25 m/s2?

At what stage of a reaction do atoms have the highest energy? a. reactant stage b. product stage c. transition state stage d. The stage of highest energy depends on the atom.

A moon with a mass of 6.0 x 10 kg orbits about a planet with a mass of 5.0x 10^24 kg. They are 4.0 x 10^8 meters apart What is the gravitational force between them? The answer is 1.