I need a brief explanation on how TV remotes use infrared waves.

The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with grams of a radioactive isotope, how much will be left after half-lives

How does the force of gravity affect the rate of acceleration?

A car is driving along a circular track of diameter d=.85km at a constant speed of v=28.5m/s. write an expression for the magnitude of the acceleration a of the car in terms of the given parameters

What are x rays called that have undergone a change in direction after interactions with atoms?

Subatomic particles that do not possess any charge but provide mass to atoms are called

Mechanical work is done an object when a force displaces the object in the direction of the force or a component of the force. True or false?

Electric current can best be induced in a wire by a. stretching the wire. b. moving a magnet up and down near the wire. c. setting the wire near a magnet. d. rotating the wire. E. none of the above

A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon

Which of these describes how heat is transferred by radiation? A.) Warm air rises and takes heat with it; eventually it cools and sinks. B.) Sunlight travels through space without the aid of fluids or solids. C.

A body is moving with a velocity of 12m/s and it comes to rest in 2 minutes, what was the acceleration?