All categories

3 years ago

Power is calculated by multiplying voltage by

Physics

1 answer:

Snowcat [4.5K]3 years ago

4 0

Answer:

Power is calculated by multiplying voltage by current.

Explanation:

If you're calculating the power of an athlete who is lifting weights,

or the power of a windmill that is pumping water from a well, or

the power of two horses turning millstones, then those electrical

units won't help at all.

But if you happen to be calculating the power delivered to an

electrical circuit or dissipated by an electrical device, then you

can use ...

(voltage) times (current)

(voltage)² divided by (resistance)

(current)² times (resistance) .

The choice just depends on which quantities you know

or can easily measure.

You might be interested in

The fast server in women's tennis is Venus Williams, who recorded a serve of 130 mi/h (209 km/h) in 2007 If her racket pushed on

Darina [25.2K]

209 km/h = 58.0 m/s

2as = v² - u²
Assuming the ball started from rest,

a = (58)² / 2 x 0.11

a = 15,290 m/s²

7 0

3 years ago

The Nature of Sound?

bogdanovich [222]

Longitudinal wave hope this is right :))))))))))

3 0

4 years ago

Read 2 more answers

Kg. m

Irina18 [472]

Answer: 0.00211

Explanation:

7 0

3 years ago

The magnetic dipole moment of Earth is 8.00 ✕ 1022 J/T. Assume that this is produced by charges flowing in Earth's molten outer

KonstantinChe [14]

To solve the problem it is necessary to use the concepts and expressions related to the magnetic dipole moment.

It is usually defined by,

$\mu = IA$

Where,

$\mu =$ Magnetic Dipole Moment

I = Current

A = Area

In this way re-arrange for the current and replacing,

$I = \frac{\mu}{A}$

$I = \frac{8*10^{22}}{\pi R^2}$

$I = \frac{8*10^{22}}{\pi * (3350*10^3)^2}$

$I = 7.1285*10^9A$

Therefore the current is $7.1285*10^9$ Amperes

5 0

3 years ago

Jerry is pushing a 50-kg box across a moth floor with an acceleration of 0.6 m/s2. What force is he applying to the box? *

vagabundo [1.1K]

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 50 × 0.6

We have the final answer as

Hope this helps you

5 0

3 years ago