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Phoenix [80]
3 years ago
5

What is a situation in which friction is helpful?

Physics
1 answer:
bagirrra123 [75]3 years ago
8 0
When driving a car on the road
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I would think force. Because friction has to have force to work ^-^
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Two thin wires rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two
tigry1 [53]

Answer:

Q/4πε0 [1/R - 1/√R2+d2]

Explanation:

Q/4πε0 [1/R - 1/√R2+d2] is the answer

explanation is attached.

toppr

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2 years ago
An electric heater rated 600 w operates 6 hours per day find the cast to operate it for 30 days , at rs. 4.00 per unit​
djverab [1.8K]

Answer:

Rs. 432*10^3 (In kilowatts per hour)

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3 0
3 years ago
Determine the potential difference between the ends of the wire of resistance 5 Ω if 720 C passes through it per minute.
Strike441 [17]

Answer:

The potential difference between the ends of a wire is 60 volts.

Explanation:

It is given that,

Resistance, R = 5 ohms

Charge, q = 720 C

Time, t = 1 min = 60 s

We know that the charge flowing per unit charge is called current in the circuit. It is given by :

I = 12 A

Let V is the potential difference between the ends of a wire. It can be calculated using Ohm's law as :

V = IR

V = 60 Volts

So, the potential difference between the ends of a wire is 60 volts. Hence, this is the required solution.

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I WILL MARK YOU THE BRAINLIEST NO LINKS
nasty-shy [4]

yeah it definitely 2 .:) :)

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