Exam 4: Electricity and Magnetism

A mixture of ethanol and gasoline is called

A force of 7.2 N acting on a 1.0-kg object initially at rest moves it through a parallel distance of 2.5 m. How much work is done on the object?

Power is

The kinetic energy of a pendulum is least

Currently, in the United States, which fuel is utilized to produce the majority of electrical power?

The bob of a simple pendulum is 0.50 m above the floor at its lowest position. Calculate the maximum speed of the bob when it is held at a maximum height of 2.5 m and released.

A force of 7.2 N acting on a 1.0-kg object initially at rest moves it through a parallel distance of 2.5 m. Neglecting friction, what is the speed of the object when it is moved 2.5 m?

Potential-energy values may be

Given 10 kWh of electricity and assuming no losses, how much work, in joules, could be done?

What is bought from an electric company?

A stone is dropped from a bridge 15 m above a river. With what speed does the stone hit the water?

A system may

A 5.0-kg object is lifted 1.1 m from the floor to a table. What is the object's gravitational potential energy relative to the floor?

A force of 12 N acts on a 2.0-kg object through a parallel distance of 1.5 m. How much work is done on the object?

The potential energy of a pendulum is least

The sum of the kinetic energy and potential energy is called ______________ energy.

Energy resulting from motion is called ______________.

A horsepower is a unit of power equal to 550 ______________.

The energy of a system

The product of one ______________ and one meter is one joule.