Physical Science Unit 5 - Work

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5 joules

A box of groceries requires five newtons of force to lift it one meter to the counter. How many joules of work is done?

100 joules

A person weighing 50 newtons climbs a 2-meter ladder. How many joules of work is done?

Newton meter

Each joule of work is one __________________________ (units) of energy.

30 joules

How many joules of work is done when a force of 10 newtons is used to lift a boy 3 meters into the air?

The force must be in the same direction as movement.

In the math equation W = F × D, what relationship is required for work to be accomplished?

thermodynamics

James Joule is credited with founding the science of ____________________________________.

Law of Conservation of Matter and Energy

The First Law of Thermodynamics is generally referred to as __________________________________________________.

Joule

The standard unit of work in the metric system is named after the scientist ________________.

- The law confirms that matter or energy could not create itself. - The law is completely consistent with the Bible's account of Creation.

Which statement(s) is/are true regarding the First Law of Thermodynamics?

False

Work against gravity is done if you carry a book across a room.

True

Work is done if water falls from the top of a dam.

True

Work is done if you lift a brick.

True

Work is done if you push a box across a room.

True

Work is done if you push a child in a wagon.

False

Work is done if you push against a wall.

force, distance

Work is equal to __________ times ________________.

energy

Work is the quantity of _____________ used to move an object.

0

________________ joules of work is done when a book weighing 2.125 N is carried from a desk in one classroom to a desk in another, 25.796 m along a straight hall.


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