10. How is the mass number calculated for an element?

A. The difference between the mass and the protons

B. The sum of protons and neutrons

C. The product of neutrons and protons

D. There is no calculation.

Why is radon gas dangerous at high levels? A. It emits beta particles that cause burns. B. It emits gamma rays that cause burns. C. It emits alpha particles which damages tissues.

When a speeding truck hits a stationary car, the car is deformed and heat is generated. What can you say about the kinetic energy of the system after the collision?

In 1990, the human genome project began with the stated goal to?

To find the number of neutrons in an atom, you would subtract A.) mass number from atomic number B.) atomic number from mass number C.) atomic number from electron number D.) isotope number from atomic number

The energy released by burning of 1 litre petrol is?

What type of motion occurs when an object spins around an axis without altering its linear position?

What happens to the movement of particles in a liquid when it is heated?

During a demonstration of the gravitational force on falling objects to her class, Sarah drops an 11 lb. bowling ball from the top of the science building. Determine distance the ball has traveled after falling for 1.

A teacher wants to demonstrate that unheated water can boil at room temperature in a beaker within a bell jar connected to a vac-uum pump. However, the vacuum pump is faulty and can reduce pressures only to 15 kPa.

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?