In radiation therapy

a. isotopes are traced through a chemical reaction.

b. unhealthy human cells are destroyed.

c. radioactive isotopes are used as fuel.

d. weak spots in water pipes are found.

A golf ball is at rest on the grass. What must happen to cause the ball to move? A balanced net force must be applied An unvalanced net force must be applied The net force must be zero The net force must be greater than the applied force

3 law of thermodynamics

A car accelerates from 13-m/s to 24.1-m/s in 5.4-s. what was its acceleration in m/s2?

Which is the best definition of a solution? A. A solution is any two liquids mixed. B. A solution is two gases mixed together. C. A solution is the same as a mixture. D. A solution is a mixture that has the same composition throughout.

The mean distance from Saturn to the sun is 9 times greater than the mean distance from Earth to the sun. How long is a Saturn year?

Does adding a neutron to an atom's nucleus makes it an ion?

What is the difference between a fault-block and upwarped mountains?

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.

you are not chilly when swimming in warm water. but when emerging from warm water on a warm summer day, you feel chilly if the wind is blowing. Explain

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.