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Arturiano [62]
3 years ago
6

Please Help me in this question..​

Physics
1 answer:
Vlad [161]3 years ago
8 0

Answer:

1 different

Explanation:

2 light

3 sunny

4 a shadow

5dark

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24. An elevator is moving vertically up with an acceleration a. The force exerted on the floor by a passenger of mass m is
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<u>Given </u><u>:</u><u>-</u>

  • An elevator is moving vertically up with an acceleration a.

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>

  • The force exerted on the floor by a passenger of mass m .

<u>Solution</u><u> </u><u>:</u><u>-</u>

As the man is in a accelerated frame that is <u>non </u><u>inertial</u><u> frame</u><u> </u>, we would have to think of a pseudo force .

  • The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .

For the FBD refer to the attachment . From that ,

\implies Weight_{apparent}= mg + ma

<u>Hence</u><u> </u><u>option</u><u> </u><u>d </u><u>is </u><u>correct</u><u> </u><u>choice </u><u>.</u>

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2 years ago
Blocks with masses of 3.0 kg, 4.0 kg, and 5.0 kg are lined up in a row on a frictionless table. All three are pushed forward by
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Which of these best describes how the kinetic energy of carbon dioxide molecules change as the carbon dioxide is heated?
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B.
carbon dioxide molecules have more energy; therefore, the kinetic energy increases
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The map below shows major ocean currents in the North Atlantic and North Pacific Oceans. In general, currents flowing toward the
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d

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An 805-kg race car can drive around an unbanked turn at a maximum speed of 54 m/s without slipping. the turn has a radius of cur
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(a) Equating centripetal force to friction force, one finds the relation
  v² = kar
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There is already downward acceleration due to gravity. The additional accceleration due to the wing is
  a = F/m = 10600 N/(805 kg) ≈ 13.1677 m/s²
We presume this is added to the 9.80 m/s² gravity provides, so the coefficient of friction is
  k = v²/(ar) = (54 m/s)²/((13.1677 m/s² +9.80 m/s²)·(155 m))
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(b) The maximum speed is proportional to the square root of the downward acceleration. Changing that by a factor of 9.80/(9.80+13.17) changes the maximum speed by the square root of this factor.
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