What is the half life of each of these radioactive isotopes?

a radioactive isotope decreased to one-fourth its original amount in 18 months.

What unit is used to measure weighted average atomic mass?

Complete these questions on your own paper or word document. When you are done, you will submit your answers for grading. You must show all of your work to receive full credit.

An object is moving in a circle. If the radius of the object is doubled, and the period remains constant, the magnitude of the velocity will be ___ original value.

Why don't action and reaction forces on a person swimming in water cancel each other out

What happens when a source of energy causes a medium to vibrate?

Which are examples of transverse waves? Check all that apply. earthquake P-waves earthquake S-waves radio waves sound visible light X-rays

To lift a car, you use a hydraulic lift filled with a fluid that has density of 1 1200 kg/m3. The radius of one half of the lift is 0.5 meters and the diameter of the other half of the lift is 2.5 meters.

Charlie runs an auto repair and mechanic shop. A hot rod has come in with mass 1500 kg requiring a repair. He needs to raise the car using a hydraulic lift on a piston (Piston A) having a radius of 25 cm.

What does 4_2 helium means

The type of energy transferred by a wave in a medium is energy