The energy needed to get a reaction started is the

A. adhesion energy.

B. activation energy.

C. cohesion energy.

D. chemical energy.

A large truck hits a small car and totals it. If the truck exerted a force of 25000 N on the car How much force did the car exert on the truck? Which of Newton's Laws explains this?

police force open a door with 879 N applied directly to a door by a battering ram. if the ram struck 80 cm away from the hinge, how much torgue was generated

A mirror with a reflecting surface that caves inward is said to be

A moving object always has energy in its?

What is the average intensity of the wave after it passes through polarizer b?

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?