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lawyer [7]
3 years ago
6

1. What is work done in holding a 15kg suitcase while waiting for a bus for 15 minutes?

Physics
1 answer:
Anettt [7]3 years ago
7 0
The man is holding the suitcase at the same height above the surface of earth. So the gravitation potential energy remains the same. 

<span>work done is force * displacement = weight * 0 = 0</span>
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How does a electron travel through a closed circuit?
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The particles that carry charge through wires in a circuit are mobile electrons. The electric field direction within a circuit is by definition the direction that positive test charges are pushed. Thus, these negatively charged electrons move in the direction opposite the electric field.

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3 years ago
Two 1.50-V batteries-with their positive terminals in the same direction-are inserted in series into a flashlight. One battery h
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Based on the voltage of the batteries and the internal resistance, the bulb's resistance is 4.595 Ω

<h3>What is the resistance?</h3>

First, find the total emf of the circuit:

= 2 x 1.5V

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The internal resistance is:

= 0.255 + 0.15

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The resistance in the bulb is:

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2 years ago
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3 years ago
How much electrical energy is used by a 400 W toaster that is operating for 5 minutes?
Shkiper50 [21]

The electrical energy consumed by a toaster is 0.033 Kwh.

<u>Explanation</u>:

The power utilized by the toaster is 400 W.

\text { The power utilized by the toaster is } 400 \mathrm{W} \text { in kilo-watts is } \frac{400}{1000}=0.4 \mathrm{Kw}

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\text { The toaster is operated for } 5 \text { Minutes in hours is } \frac{5}{60}=0.083 \text { hours. (One minute is } 60 \text { seconds) }

We know that,

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Electrical energy = 0.4 × 0.083

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Answer:

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3 years ago
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