A 160 lb person has a mass of 160/32 = 5 slugs. A 160-lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios. After moving downwards at constant speed, the elevator is slowing down at 2 m/s2 as it is coming to rest

a. 150 lb b. 160 lb
c. 170 lb d. none of the above


c

Physics & Space Science

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A) in the troposphere. B) between the troposphere and the stratosphere. C) in the stratosphere. D) between the stratosphere and the mesosphere. E) in the mesosphere.

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Leptons can interact by which of the following forces?

A) strong nuclear force, weak nuclear force, electromagnetic force, gravitation B) strong nuclear force, weak nuclear force, electromagnetic force C) weak nuclear force, electromagnetic force, gravitation D) strong nuclear force, weak nuclear force E) strong nuclear force, electromagnetic force, gravitation

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Dmitri places one end of a copper rod in a heat reservoir and the other end in a heat sink. By what factor is the rate of heat flow changed when the temperature difference between the reservoir and sink is doubled?

a. 2.0 c. 4.0 b. 1/2 d. 1/4

Physics & Space Science

As a one-solar-mass star evolves off the main sequence, it will probably undergo a _____

a. nova burnout b. helium flash c. hydrogen flash d. helium bang e. carbon flash

Physics & Space Science