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3 years ago

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Two charges are separated by a distance 'd' and exert a mutual attractive force of 'f' on each other. if the distance is decreas

ed to 1/3 of the original distance, what is the new force between the charges?

1 answer:

Zepler [3.9K]3 years ago

5 0

Peanut butter an jelly crackers are the best

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Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example

ValentinkaMS [17]

Answer:

$2.02672\times 10^{-11}\ V$

Explanation:

f = Frequency = 75 Hz

B = Magnetic field = $1\times 10^{-3}\ T$

d = Diameter of cell = $7.4\ \mu m$

t = Time taken

$\omega$ = Angular frequency

The expression of emf is

$E=NAB\omega sin\omega t$

Emf is maximum when $sin\omega t=1$ and N = number of turns = 1

$E_m=AB\omega\\\Rightarrow E_m=\pi \left(\frac{d}{2}\right)^2 \times B \times 2\pi\times f\\\Rightarrow E_m=\pi \left(\frac{7.4\times 10^{-6}}{2}\right)^2\times 1\times 10^{-3}\times 2\pi\times 75\\\Rightarrow E_m=2.02672\times 10^{-11}\ V$

The maximum emf that can be generated around the perimeter of a cell in this field is $2.02672\times 10^{-11}\ V$

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3 years ago

katrin [286]

Answer:

its In most solids, conduction takes place as particles vibrate in place.

Explanation:

i did it in a test

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3 years ago

Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is normally distributed, with a mean

Reptile [31]

Answer: 56994 miles

Explanation:

Given : Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is normally distributed with

$\mu=50,000\text{ miles}$

Standard deviation : $\sigma=12,000\text{ miles}$

Let a be the distance traveled by at least 72% of the trucks.

Let X be the random variable that represents the distance traveled by a truck

Then $P(x\geq a)=0.72$

The critical value corresponds to p-value 0.72 : $z=0.5828415$

Also, $z=\dfrac{x-\mu}{\sigma}$

$\Rightarrow\ 0.5828415=\dfrac{a-50000}{12000}\\\\\Rightarrow\ a=12000(0.5828415)+50000=56994.098\approx56994$

Hence, 56994 miles will be traveled by at least (equal to and more than) 72% of the trucks .

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3 years ago

Why do we need to learn about median and mode?

siniylev [52]

We need to learn about median and mode because they are both important in statistical data and statistical data is what shows us important information about the world around us.

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3 years ago

What is the difference between 5 mL of water and 5.0 mL of water?

ad-work [718]

There is no difference. 5 is the same as 5.0

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3 years ago