Physics

Physics, 09.07.2019 09:00, saidee1143

What are the two factors that affect the frictional force between two surfaces?

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Physics, 28.06.2019 10:30, soccer816

Which of the following factors determines the strength of the frictional force between two surfaces? the amount of heat generated by the frictional the types of surfaces involved the objects' sizes how hard the surfaces push together

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Physics, 30.07.2019 00:20, kyronthomas52

Acyclist is riding his bike at a constant speed of s m/s, and experiences a frictional force between the bike and sidewalk of 100 n. the cyclist then changes his speed to 10 m/s what effect does this increase in speed have on the frictional force between the bike and sidewalk? a) the frictional force doubles because when speed increases frictional force also increases b) the frictional force becomes half of what it was because when speed increases frictional force decreases c) the frictional force increases but does not double because although friction increases with the increasing speed it does not increase as fast d) the frictional force between the bike and sidewalk stays the same because speed does not affect frictional force

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Chemistry, 03.08.2019 05:10, ginger1234

This is meant to be physicsa ball moves along a smooth metal surface while an identical ball moves along concrete.which surface exerts a smaller amount of frictional force on the ball? 1. neither concrete nor metal exert any friction on the ball because these two surfaces never result in a frictional force on any object.2. the metal surface exerts less frictional force because there are fewer bumps and irregularities on it than there are on the concrete.3. the concrete and metal surfaces exert the same amount of frictional force on the ball because they are both solid surfaces.4. the concrete surface exerts less frictional force on the ball because there are fewer bumps and irregularities on the concrete than there are on the metal.

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Physics, 22.08.2019 06:20, 23rwilliamson

1. how does the friction affect forward motion? give an example.2. describe two ways to change the frictional force between two solids surfaces. change the lubrication between the two surfaces change the normal force between the two surfaces3. how does air resistance affect the velocity of a falling object? 4. what two sources of friction do you have to overcome when you are walking? 5. if you push a chair across the floor at a constant velocity, how does the force of friction compare with the force exert? explain. 6. if you push a book against a wall hard enough, it will not slide down even though gravity is pulling it. use what you know about newton’s laws of motion to explain why the book doesn’t fall.

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