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love history [14]
3 years ago
10

Question 3 Please, i need help! Thank you

Physics
1 answer:
Tom [10]3 years ago
4 0
I don't know this 1 I'm sorry I can't help you 
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kolbaska11 [484]

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It's pretty well unanimous for choice <em>A</em> .


4 0
2 years ago
In a tug of war , two teams pull on the rope with a certain force. If team A pulls on it with a force of 225 N and team B pulls
kherson [118]

Answer:

135 N

Explanation:

Given that:

In a tug of war, team A pulls the rope with a force of 225 N; &

Team B also pulls with a force of 360 N

The magnitude of the resultant force is the difference between the two forces since they are positioned in the opposite direction.

Thus;

The magnitude = 360 N - 225 N

So, magnitude of resultant force on the rope = 135 N

8 0
2 years ago
A constant voltage is applied across a circuit element. If the resistance of the element is doubled, what is the effect on the p
miv72 [106K]

Answer:

The power dissipated is reduced by a factor of 2

Explanation:

The power dissipated by a resistor is given by:

P=I^2 R

where

I is the current

R is the resistance

by using Ohm's law, I=\frac{V}{R}, we can rewrite the previous equation in terms of the voltage applied across the resistor (V):

P=(\frac{V}{R})^2R=\frac{V^2}{R}

In this problem, the resistance of the element is doubled, while the voltage is kept constant. So we have R'=2R while V remains the same; substituting into the formula, we have:

P'=\frac{V^2}{2R}=\frac{1}{2}\frac{V^2}{R}=\frac{P}{2}

so, the power dissipated is reduced by a factor 2.

5 0
3 years ago
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