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3 years ago

Two objects are electrically charged. The net charge on one object is doubled. Therefore, the electric force _____.

2 answers:

7 0

If net charge on one object is doubled, then electric force will also get double. It is because they are directly proportional to each other.

Hope this helps!

labwork [276]3 years ago

3 0

Answer:

The electric force gets doubled.

Explanation:

According to Coulomb's law the force acting on charged bodies is directly proportional to the product of charges and inversely proportional to the square of distance between them.

Mathematically, it can be written as :

$F=k\dfrac{q_1q_2}{r^2}$

Where

r is the distance between the charges

In this question, it is given that the net charge on one object is doubled. As we can see from Coulomb's law, the electric force (F') gets doubled.

i.e. $F'=2\times k\dfrac{q_1q_2}{r^2}$

F' =2 F

Hence, this is the required solution.

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Answer:

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3 years ago

A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stopwatch measures the stone's trajec

olga2289 [7]

Answer:

The height of the cliff is 90.60 meters.

Explanation:

It is given that,

Initial horizontal speed of the stone, u = 10 m/s

Initial vertical speed of the stone, u' = 0 (as there is no motion in vertical direction)

The time taken by the stone from the top of the cliff to the bottom to be 4.3 s, t = 4.3 s

Let h is the height of the cliff. Using the second equation of motion in vertical direction to find it. It is given by :

$h=u't+\dfrac{1}{2}gt^2$

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$h=\dfrac{1}{2}\times 9.8\times (4.3)^2$

h = 90.60 meters

So, the height of the cliff is 90.60 meters. Hence, this is the required solution.

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3 years ago

An open pipe of length 0.39 m vibrates in the third harmonic with a frequency of 1400 Hz what is the distance from the center of

Svetach [21]

Length of the pipe = 0.39 m

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Now there are 3 loops so here we can say

$3\times \frac{\lambda}{2} = 0.39$

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So distance between node and its nearest antinode will be

$d = \frac{\lambda}{4}$

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So the distance will be 6.5 cm

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3 years ago

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3 years ago

What would be the daughter product of the beta decay of lead-212 and what would be the daughter product of the alpha decay of po

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Answer:

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Pb + e + ν → Bi

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