Which one of the following acts is an example of body language?

Physics

2 answers:

Viktor [21]3 years ago

6 0

Rolling of the eyes. The person is either vexed or frustrated.

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

c. rolling of the eyes

Explanation:

(◔_◔)(◔_◔)(◔_◔)

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How much tension must a rope withstand if used to accelerate a 960-kg car from rest horizontally along a frictionless surface to

Svetach [21]

Use a=(dv/dt) (change in velocity/ change in time)=acceleration
(1.2/5)=acceleration

F=ma (Newton's second law, Force= Mass x Acceleration

=960 x 0.24 F=230.4N If T<230.4N then the tow rope will hold

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3 years ago

A linear accelerator uses alternating electric fields to accelerate electrons to close to the speed of light. A small number of

kobusy [5.1K]

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

Explanation:

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

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

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2 years ago

Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with the

scoundrel [369]

Answer:

F = 0.1575 N

Explanation:

When the third sphere touches the first sphere, the charge is distributed between both spheres, then now the first sphere has only half of his original charge.

In this moment then

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Sphere three has a charge = Q/2

Now when the third sphere touches the second sphere again the charge is distributed in a manner that both sphere has the same charge.

How the total charge is Q = Q/2 + Q = 3/2Q, when the spheres are separated each one has 3/4Q

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Sphere three has a charge = 3/4Q

The electrostatic force that acts on sphere 2 due to sphere 1 is:

F = $\frac{kQ_{1}Q_{2} }{r^{2} }$