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4 years ago

PLEASE HELP ME!!!!

Physics

2 answers:

fiasKO [112]4 years ago

8 0

Answer:c

Explanation:

Sliva [168]4 years ago

7 0

Answer:

A. The velocity increases during the time periods labeled A and C.

Explanation:

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Hoochie [10]

The answer to this would inFact be A

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3 years ago

An electron is released from rest in a weak electric field given by E =-2.30 x 10-10 N/Cj. After the electron has traveled a ver

Goshia [24]

Explanation:

It is given that,

An electron is released from rest in a weak electric field of, $E=2.3\times 10^{-10}\ N/C$

Vertical distance covered, $s=1\ \mu m=10^{-6}\ m$

We need to find the speed of the electron. Let its speed is v. Using third equation of motion as :

$v^2-u^2=2as$

$v^2=2as$ .............(1)

Electric force is $F_e$ and force of gravity is $F_g$ . As both forces are acting in downward direction. So, total force is:

$F=mg+qE$

$F=9.1\times 10^{-31}\times 9.8+1.6\times 10^{-19}\times 2.3\times 10^{-10}$

$F=4.57\times 10^{-29}\ N$

Acceleration of the electron, $a=\dfrac{F}{m}$

$a=\dfrac{4.57\times 10^{-29}\ N}{9.1\times 10^{-31}\ kg}$

$a=50.21\ m/s^2$

Put the value of a in equation (1) as :

$v=\sqrt{2as}$

$v=\sqrt{2\times 50.21\times 10^{-6}}$

v = 0.010 m/s

So, the speed of the electron is 0.010 m/s. Hence, this is the required solution.

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4 years ago

What is shearing? is it means taking out the hair of the sheep

ICE Princess25 [194]

Answer:

Thats a greate quiestionm look it up

Explanation:

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4 years ago

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What are the methods of avoiding demagnetization

lbvjy [14]

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The best method to use in prevention of self-demagnetization of a permanent magnet is by use of a keeper. Keepers were also commonly known as amateurs. They help in storing magnets safely, especially those that have low coercivity ( magnets that are extremely susceptible to stray fields).

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Hope It Helps!

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3 years ago

A child standing on a bus remains still when the bus is at rest. when the bus moves forward and then slows down, the child conti

kati45 [8]

I'm pretty sure the answer to this question is "newton's first law of motion" or d. Hope this helps. :)

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4 years ago