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Vladimir79 [104]
3 years ago
8

Janetta ran a campaign for student body president, and she really wanted to win. She gave election buttons to everyone and told

them how much she appreciated their friendship. Then Janetta told each person that she hoped for a vote. Are Janetta's actions altruistic? Yes, because she gave a gift and expressed her appreciation. No, because she is hoping that people will vote for her. Yes, because her kind compliments probably made others feel good. No, because running for president always means people are dishonest.
Physics
1 answer:
SVEN [57.7K]3 years ago
3 0

Answer:

No, because she is hoping that people will vote for her.

Explanation:

Altruism is when you do something for others and have very little expectation of getting something in return. In this case, Janetta expected something in return from her friends. We may not also be sure of the sincerity of Janetta appreciating friendship. From the above definition of altruism, we conclude that Janetta's actions are not altruistic because she hoped that people will vote for her.

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A linear accelerator uses alternating electric fields to accelerate electrons to close to the speed of light. A small number of
kobusy [5.1K]

Answer:

8.1 x 10^13 electrons passed through the accelerator over 1.8 hours.

Explanation:

The total charge accumulated in 1.8 hours will be:

Total Charge = I x t = (-2.0 nC/s)(1.8 hrs)(3600 s/ 1 hr)

Total Charge = - 12960 nC = - 12.96 x 10^(-6) C

Since, the charge on one electron is e = - 1.6 x 10^(-19) C

Therefore, no. of electrons will be:

No. of electrons = Total Charge/Charge on one electron

No. of electrons = [- 12.96 x 10^(-6) C]/[- 1.6 x 10^(-19) C]

<u>No. of electrons = 8.1 x 10^13 electrons</u>

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3 years ago
A motorcycle moving at a constant velcoity suddenly accelerates at a rate of 4.0 m/s/s to a speed of 35 m/s in 5.0 s. What was t
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Answer:

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Explanation:

v = u+ at

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A woman wearing athletic clothing outside. The woman is stretching her legs in a lunge position. Based on the nonverbal messages
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3 years ago
A metal can containing condensed mushroom soup has mass 215 g, height 10.8 cm, and diameter 6.38 cm. It is placed at rest on its
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Answer:

Part a)

Moment of inertia of the cylinder is given as

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Part B)

Height of the cylinder is of no use here to calculate the inertia

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Since we don't know about the viscosity data of the soup inside the cylinder so we can't say directly about the moment of inertia of the cylinder as I = 1/2 mR^2

Explanation:

As we know that the inclined plane is of length L = 3 m

and its inclination is given as 25 degree

so we know that acceleration of center of mass of the cylinder is constant so we will have

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so we have

v_f^2 = 0 + 2a(3)

now we know that

v_{avg} = \frac{L}{t} = \frac{v_f + v_i}{2}

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Now we have know that final speed of the cylinder due to pure rolling is given as

v_f = \sqrt{\frac{2gH}{1 + \frac{I}{mR^2}}}

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Part B)

Height of the cylinder is of no use here to calculate the inertia

Part C)

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Can someone help me with this question?
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Answer:

it is 5

Explanation:

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