When the amount of a radioactive substance is reduced by 50%, what has occurred? a half-life beta radiation alpha radiation gamma radiation?

A spring has an unstretched length of 10 cm. It exerts a restoring force F when stretched to a length of 11 cm. a. For what length of the spring is its restoring force 3F? b. At what compressed length is the restoring force 2F?

Examples of rotating and revolving objects and an objects that does both

What is the energy source that drives plate tectonics

Krishne wants to measure the mass and volume of a key. Which tools should she use?

If a blender is plugged into a 168 V outlet that supplies 80.8 A of current, what amount of power is used by the blender?

Which is a vector quantity speed or velocity

With a naked eye your are unlikely to see a "blank" in your lifetime. A - Comet. B - Shooting Star. C - Meteor. D - Planet.

If there is a current of 15A in a circuit for 5 minutes, what quantity of electric charge flow through the circuit?

Which universal force acts on protons and neutrons in an atom's nucleus?

How many turns are in the secondary coil of a step up transformer that increases voltage from 30 V to 150 V and has seven turns in the primary coil?