A 9 V battery sends a current of 0.5 A through a resistor. What is the value of the resistance?

Newton's Second Law says that force is equal to mass times acceleration. If the car and washer were more massive, you would need (more / less) force to accelerate car and washer equally. (5 pts)

By applying a 12-newton horizontal force, a 7-kilogram block is moved 12 meters in 3 seconds on a frictionless, horizontal surface. How much power was used in moving the block. A) 144 watts B) 112 watts C) 16 watts D) 48 watts

Use newtons first two laws of motion to explain what will happen when the truck collides with car

A heterogeneous mixture is a

On a summer day at the equator on mars the temperature never rises higher than 50

Which of the following statements is true? A. Both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction. B. Nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. C.

A star may form a black hole once it cannot?

Kai was 200 meters north of the library when he remembered he had to return some books to the library. It took him 200 seconds to do the round trip. Which best describes Kai's roundtrip?

The engine that powers a crane burns fuel at a temperature of 1500 oC. It is cooled by air at a temperature of 20 oC. The crane is used to lift a 1000 kg steel girder 30 m into the air.

The portion of a light ray that falls on a surface is a/an