Exam 10: Force and Force-Related Variables in Engineering

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What does r stand for in the following equation? F=Gm1m2r2F = \frac { G m _ { 1 } m _ { 2 } } { r ^ { 2 } }

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D

The acceleration of an object is directly proportional to the force that is causing the acceleration. This is a basic description of a. Newton's 1st 1 ^ { \text {st } } Law. b. Newton's 2nd 2 ^ { \text {nd } } Law. c. Newton's 3rd 3 ^ { \text {rd } } Law. d. Newton's 4th 4 ^ { \text {th } } Law.

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B

If you drop your textbook, it speeds up while it is falling, and therefore

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C

A mosquito flying 3 m/s collides head-on with a car going 55 m/ m/s\mathrm { m } / \mathrm { s } in the opposite direction. Which of the following statements is true as a result of the collision?

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The property of a fluid that quantifies fluid friction is

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In general, the viscosity of liquids increases with increasing temperature.

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Forces tend to do what to objects upon which they act?

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The value of the spring constant depends on

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Over the elastic range, the deformation of a spring is directly proportional to

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If you push sideways gently on your textbook and it doesn't move, it is most likely because

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If you drop your textbook, it falls because the earth pulls it downward. At the same time, your textbook pulls on the earth with a force that is

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A satellite orbits the earth instead of flying off into space because

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Unlike many other vector quantities, which are defined by their magnitude and direction, force is also defined by its

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The physical quantity of force is a vector quantity (has direction).

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One Newton is equal to a. 1kgms21 \frac { \mathrm { kg } \cdot \mathrm { m } } { \mathrm { s } ^ { 2 } } b. 1kgms1 \frac { \mathrm { kg } - \mathrm { m } } { \mathrm { s } } c. 1kgm2 s21 \frac { \mathrm { kg } \cdot \mathrm { m } ^ { 2 } } { \mathrm {~s} ^ { 2 } } d. 1kg2ms21 \frac { \mathrm { kg } ^ { 2 } \cdot \mathrm { m } } { \mathrm { s } ^ { 2 } }

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If an object is at rest and there are no unbalanced forces acting on it, the object will

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Which of the following statements best describes what weight is?

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If you push on your textbook so that it slides across the table at a constant velocity,

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What does NN stand for in the following equation? Fmax=μNF _ { \max } = \mu N

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The physical quantity of force has

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