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3 years ago

7

The source of heat for a (an) _____ system is electricity

1 answer:

marshall27 [118]3 years ago

3 0

Electric Heating systems use electricity as a source of heat.

<u>Explanation: </u>

Each heater consists of an electric resistor, which the heating element in it. The process involved is Joule Heating. It is the phenomenon in which, passage of electric current produces heat. Heat is generated when the electrons from the current and the positive ions of the conductor start interaction.

The presence of voltage difference makes an electric fields, which in turn accelerates the charges present in the conductors. When they collide with ions of conductor, heat gets generated, and emitted out, which we use for heating purposes.

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Bill forgets to put his car in park and it starts rolling west. When it is moving at a speed of 3.5 m/s, it collides with Tanya'

djverab [1.8K]

PART A)

momentum of Bill's car

mass = 900 kg

speed = 3.5 m/s towards west

so momentum of this car given as

$P_1 = 900(3.5) = 3150 kg m/s$

Similarly momentum of Tanya's car

mass = 1100 kg

speed = 2 m/s towards East

so momentum will be

$P_2 = 1100(2) = 2200 kg m/s$

Total momentum of both cars will be

$P = 3150 -2200 = 950 kg m/s$ Towards west

PART B)

Since there is no external force on the system of two cars

So here total momentum of both cars will remains conserved

So final momentum of two cars will be same as initial momentum

$P = 950 kg m/s$ towards west

Part C)

final momentum of Bills car

$P_1 = (900)(2) = 1800 kg m/s$ Towards East

now we have

$P_1 + P_2 = 950$

$1100 v - 1800 = 950$

$v = 2.5 m/s$ towards west

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3 years ago

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AlladinOne [14]

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3 years ago

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A reconnaissance plane flies 545 km away from

Nikolay [14]

Answer:

681.6/ms

Explanation:

A reconnaissance plane flies 545 km away from its base at 568 m/s. then flies back to its base at 852 m/s.

What is its average speed?

Answer in its of m/s

Avg speed of the round trip is

2*568*852/(568+852)= 681.6/ms

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3 years ago

When will electric charges flow?

Norma-Jean [14]

C. when the circuit is closed

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3 years ago

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What is the reaction force of the table with a weight of 558N

Delicious77 [7]

Answer: reaction force = -558N

Explanation:

w = f = 558N

since action force and reaction force are equal in magnitude and opposite in direction,

reaction force = -(f)

reaction force = -558N

if that helps.

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3 years ago