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3 years ago

15

Clothes dryer uses about 3:00 amps of current from a 240-volt line how much power does it use

1 answer:

kirill115 [55]3 years ago

4 0

Electrical power is defined as

P = I * V

I = 3 amperes

V = 240 volts

Power = 3 * 240

Power = 720 Watts. Answer

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On the visible satellite image, the sun’s rays would be reaching earth generally from the

patriot [66]

<span>Visible satellite images are like photos which are dependent on visible light from the sun so they work best during the day. The sensor works by detecting radiation within the range that wavelength is visible. Because of this, the rays is usually seen as reaching earth from the East. </span>

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2 years ago

Find the total electric charge of 2.5 kg of electrons. Express your answer using two significant figures.

zimovet [89]

Answer : The total electric charge of electrons is, $-4.4\times 10^{11}C$

Explanation:

Answer : The number of electrons transferred are, $4.68\times 10^{20}$

Explanation :

First we have to calculate the number of electrons.

Number of electrons = $\frac{\text{Total mass of electrons}}{\text{Mass of one electron}}$

Mass of 1 electron = $9.1\times 10^{-31}kg$

Total mass of electron = 2.5 kg

Number of electrons = $\frac{2.5kg}{9.1\times 10^{-31}kg}$

Number of electrons = $2.75\times 10^{30}$

Now we have to calculate the total electric charge of electrons.

Formula used :

$Q=ne\\\\n=\frac{Q}{e}$

where,

n = number of electrons transferred = $2.75\times 10^{30}$

Q = charge on electrons = ?

e = charge on 1 electron = $-1.602\times 10^{-19}C$

Now put all the given values in the above formula, we get:

$2.75\times 10^{30}=\frac{Q}{-1.602\times 10^{-19}C}$

$Q=-4.4\times 10^{11}C$

Thus, the total electric charge of electrons is, $-4.4\times 10^{11}C$

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3 years ago

Osteosarcoma cases are rare. Why does this

Hoochie [10]

Answer:

The answer is: It is difficult to tell if fluoride causes this cancer

Explanation:

edgenuite said

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3 years ago

A particular motor can provide a maximum torque of 110 n • m. assuming that all of this torque is used to accelerate a solid, un

hjlf

Using the rotational equivalent of force:

Which is T = I*Alpha

Where: T is torque, I is the moment of inertia and Alpha is the angular acceleration.

This is for the flywheel: J = 1/2mr^2 = 5*3^2 = 45 kgm^2

From the equation:

T = J*dω/dt

we get:

Δt = J*Δω/T = 45*8.13/110.0 = 3.326 sec

5 0

3 years ago

A 790N person runs up a flight of 40 stairs (.25m for each step) in 20 seconds, and then down 10 steps in 5 seconds. How much to

Romashka [77]

A person runs up 40 stairs and then come down 10 steps

So total stairs upwards is given as

$N = 40 - 10 = 30$

now here we will have total height reached

$H = N\times h$

$H = 30 \times 0.25 = 7.5 m$

Now total energy used or mechanical work done is

$W = mgH$

$W = 790 \times 7.5 = 5925 J$

Now the mechanical power is given as

$P = \frac{W}{t}$

$P = \frac{5925}{20+ 5} = 237 W$

7 0

3 years ago