If a substance is emitting radiation very slowly, what can you determine about its half-life.

A. it has a long half-life

B. it has a short half-life

C. it has no half life

When You lift a load, the resistance force is

Which scientist is often called the father of the atomic bomb because of his work as the head of the Manhattan Project? Enrico Fermi Albert Einstein Edward Teller Robert Oppenheimer

Have you ever been skydiving? Is this something that you would ever want to do? What is the force that is acting against gravity when things fall to the ground from thousands of feet above sea level?

Static charge develops on a substance as it acquires or loses protons due to friction. a. True b. False

The brakes on a truck fail as it approaches a car stopped at a red light. Use Newton's first and second law of motion to explain what will happen when the truck collided with the car.

A measure of how much pulling, or tension, a material can withstand before breaking is - A. hardness. B. brittleness. C. tensile strength. D. malleability.

How work done against gravity can be expressed?

An electron is acted on by two electric forces, one of 2.7*10-14 N acting upward and a second of 5.8*10-14 N acting to the right. What is the magnitude of the electric field at the electron's location?

A satellite on a Low Earth Orbit is flying with a speed of 7.65 km/s. The vertical component of the Earth's magnetic field is 35.3 μT at the current location of the satellite.

A central air conditioner uses 4.5 kilowatts. It runs for 10 hours over the course of a day. How much energy does the air conditioner use during that day?