Work, Heat, Energy

Let's make a review

Multiple Select

What is energy? Select two answers

• The ability to change or produce changes in other objects

• The ability to move objects to one place to other

• The ability to create new substances

• The ability to do work

Multiple Choice

According to the image, energy can be...

• Degraded

• Transfered

• Transported

• Transformed

Multiple Choice

Energy can be __________ when you can't use it anymore

• Degraded

• Transfered

• Transported

• Transformed

Multiple Choice

According to the image, energy can be ________ from one object to other

• Degraded

• Transfered

• Transported

• Transformed

Multiple Choice

According to the image, sound energy (and others) can be _________ from one place to another

• Degraded

• Transfered

• Transported

• Transformed

Work & Heat

​Processes of how energy can be TRANSFERED, from one object to other.

​Work and Heat

Push or pull on an object that results from the interaction with another object

Energy transfer due to the action of a force that cause displacement

Definition

Work

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Change in the position of an object in a straight distance in a particular direction

Work??

Force

Unit of measurement: Newtons (N)

A force can:

*Set an object in motion

*Shift it's direction

*Change in shape

*Put back in resting position

*Change it's speed

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​Push or pull on an object that results from the interaction with another object

​https://es.liveworksheets.com/vy1666513qa

Applied force

Frictional force

Normal force

Contact forces

Forces are divided into

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Is applied to an object by external means. As a result the object either moves or deforms. The object generally moves in the direction of the force.

Force that resist the sliding or rolling of a solid object over another

Force that excert surfaces to sprevent solid objects from passing through each other

Gravitational

Electrostatic

Magnetic

Non contact

Forces are divided into

​Weight: Gravitational force of attraction caused by the prescence of a massive second object.

https://www.youtube.com/watch?v=5-2NLHB4Gxg

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Heat

Definition

Energy transfer from an object at a higher temperature to an object at a lower temperature

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Heat???