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umka2103 [35]
3 years ago
6

A ceiling fan uses 0.45 kWh of energy in 6 hours. What is the power rating of the fan?

Physics
1 answer:
Fynjy0 [20]3 years ago
7 0
The power is defined as the energy used divided by the time :
P= \frac{E}{t}
where E is the energy and t the time.
In our problem, the energy used is E=0.45 kWh=450 Wh while the time is t=6 h, so the power used by the fan is
P= \frac{E}{t}= \frac{450 Wh}{6 h}=75 W

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PIT_PIT [208]

Answer: charge Q = 40Coulombs

Explanation: The current in a circuit is the quantity of charge that flows through it per second.

Here the 2amp current is same as the amount of charge in coulomb that flows through the terminal in ONE second.

So, if 2 coulomb of charge flows in 1sec then in 20 secs we will have

Q(charge) = 2*20 = 40 coulombs

6 0
3 years ago
A burning piece of wood converts ____ energy into ____ energy​
liq [111]

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a burning piece of converts Chemical energy into Heat(Thermal) and Light energy

8 0
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Can someone tell me the ans of this question quick please. will give brainliest!
Usimov [2.4K]

Answer:

64 km/h

It is a simple ratio

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8 0
3 years ago
Read 2 more answers
Determine the kinetic energy of a 1500 kg roller coaster that is moving with a
olga2289 [7]

Answer:

<h2>918,750 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2}  \\

m is the mass in kg

v is the velocity in m/s

From the question

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v = 35 m/s

We have

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We have the final answer as

<h3>918,750 J</h3>

Hope this helps you

3 0
3 years ago
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notka56 [123]

Answer:

It is calculated by dividing Resistance, R, by Inductive reactance, XL.

Explanation:

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Q factor is the inverse in the resonance series circuit.

Q factor of a resonance parallel circuit,

<h3>Q = R/XL</h3>

R = Resistance

XL = Inductive reactance

3 0
3 years ago
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