The atomic mass of potassium is 39. if its atomic number is 9, it has how many neutrons within each potassium atom?

A baboon pushes a 3.1 kg stone with 150 j of kinetic energy. What is the stone's speed?

1. How much energy is needed to raise 1 g of water 1°C? 2. How much energy is needed to change 1 g of water at 100°C to steam at 100°C

You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 34.9 âc. the only thermometer you can find at your workbench reads in degrees fahrenheit. if the initial temperature of the sample is 70.

Gravitational force is a (n) ? A) attractive force B) repulsive force C) both an attractive and repulsive force D) neither an attractive or repulsive force

Which of the following is not a common property of waves? a. wavelength b. frequency c. mass d. period

A large balloon is initially filled to a volume of 1.96 l at 318.44 k and a pressure of 2.89 atm. what volume of gas will the balloon contain at 1.77 atm and 336.33 k?

How to calculate kinetic energy? (physics/physical science)

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth