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3 years ago

Discuss the factors that are used to determine power.

2 answers:

5 0

The factors that are used to determine power are:
Voltage,current and the power factor.

Power = Voltage x Current x K
Watts = Volts x Amps x Power Factor

posledela3 years ago

3 0

Answer : current , voltage and resistance

Explanation: Three factors are used to power.

Current , voltage and resistance

When we find the power then we need the voltage, current and resistance.

We use the ohm's law and find the power

Firstly we will use the ohm's law

$V = I \times R$

Now, the power is

$P = I\times V$ ...(i)

Put the value of V in equation (i)

$P = I^{2}\times R$

This is the formula of power and factors of the power is current , voltage and resistance. Watt is the unit of power.

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3 years ago

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1. You place an object 63 cm in front of a converging lens, with a 40 cm focal length.

NikAS [45]

Answer:

109.6 cm , - 1.74 , real

1.5

Explanation:

d₀ = object distance = 63 cm

f = focal length of the lens = 40 cm

d = image distance = ?

using the lens equation

$\frac{1}{f} = \frac{1}{d_{o}} + \frac{1}{d}$

$\frac{1}{40} = \frac{1}{63} + \frac{1}{d}$

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$m = \frac{-109.6}{63}$

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The image is real

d₀ = object distance = a

d = image distance = - (a + 5)

f = focal length of lens = 30 cm

using the lens equation

$\frac{1}{f} = \frac{1}{d_{o}} + \frac{1}{d}$

$\frac{1}{30} = \frac{1}{a} + \frac{1}{- (a + 5)}$

a = 10

magnification is given as

$m = \frac{-d}{d_{o}}$

$m = \frac{- (- (a +5))}{a}$

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2 years ago

Which is the force of repulsion between two positively-charged particles?

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answer>>>>electric force <<<<by the way i don't like physics but i answer this for you ^-^

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The gravitational force is a force reliant on mass and attraction of the masses. There are attractive forces here, but not really repulsive forces. 
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2 years ago

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