Adv Phys Sci-Section 2 Exam Review- MACHINES & ENERGY

Front

What is a compound machine?

Back

A compound machine is a device that combines two or more simple machines to perform work.

Front

Can levers provide mechanical advantage?

Back

FALSE - Levers can provide mechanical advantage, just like gears and pulleys.

Front

What is a heat engine?

Back

A heat engine is a machine that converts heat energy into mechanical energy.

Front

Is the moon considered a satellite?

Back

TRUE - The moon is a natural satellite of the Earth.

Front

What does a car rated at 50 horsepower signify?

Back

It means the car can do the same amount of work as 50 horses.

Front

What are simple machines?

Back

Simple machines are basic mechanical devices that change the direction or magnitude of a force, including levers, pulleys, and inclined planes.

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied to it.

Front

What is the purpose of a pulley?

Back

A pulley is used to change the direction of a force and can also provide a mechanical advantage.

Front

What is the principle of conservation of energy?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as 1/2 mv², where m is mass and v is velocity.