"Power" Mechanical and Power PPT Courseware 2

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Beijing Normal University eighth grade physics volume 2	pptx	6 MB

"Power" Mechanical and Power PPT Courseware 2

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Upload Time: 2024-09-06

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Description

"Power" Mechanical and Power PPT Courseware 2

speed

1. Physical meaning: a physical quantity that describes how fast an object moves.

2. Definition: The distance traveled by an object per unit time.

3. Formula: v=S/t

4. Unit: m/s Km/h

Power

1. Physical meaning: a physical quantity that describes how quickly an object does work.

2. Definition: The work done by an object per unit time.

3. Formula: P=W/t

4. Unit and conversion: 1W=1J/s

1MW=106W 1KW=103W

practise

Known: F=50N v=2m/s t=5s

Ask for: 1) W=? 2)P=?

Solution: 1) W=FS=Fvt=50N·2m/s·5s=500J

2) P=W/t=500J/5s=100w

P=W/t=FS/t=Fv=500N·2m/s=100w

Keywords: Power teaching courseware, Machinery and work teaching courseware, Beijing Normal University version eighth grade physics PPT courseware download, Volume 2, Eighth grade physics slide courseware download, Power PPT courseware download, Machinery and work PPT courseware download, .PPT format;

For more information about the PPT courseware "Power Machinery and Work", please click the Power ppt Machinery and Work ppt tab.

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Update Time: 2024-09-06

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"Power" Mechanical and Power PPT Courseware 2