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bagirrra123 [75]
2 years ago
6

An object, once set in motion, will tend to move in a straight line and at a constant speed. But the law (The Law is Newton's Fi

rst Law.) isn’t always true. Explain why.
Physics
1 answer:
elena55 [62]2 years ago
6 0

Answer:

Obstructions can happen. Outside forces can act upon it.

Explanation:

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Circuit A in a house has a voltage of 208 V and is limited by a 40.0-A circuit breaker. Circuit B is at 120.0 V and has a 20.0-A
Setler79 [48]

Given Information:  

Voltage of circuit A = Va = 208 Volts

Current of circuit A = Ia = 40 Amps

Voltage of circuit B = Vb = 120 Volts

Current of circuit B = Ib = 20 Amps

Required Information:  

Ratio of power = Pa/Pb = ?

Answer:  

Ratio of power = Pa/Pb = 52/15

Explanation:  

Power can be calculated using Ohm's law

P = VI

Where V is the voltage and I is the current flowing in the circuit.

The power delivered by circuit A is

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Pa = 208*40

Pa = 8320 Watts

The power delivered by circuit B is

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Pb = 120*20

Pb = 2400 Watts

Therefore, the ratio of the maximum power delivered by circuit A to that delivered by circuit B is

Pa/Pb = 8320/2400

Pa/Pb = 52/15

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