2 years ago

Can you think of a device or machine that transfers the motion of a hot gas to motion of an object?

Physics

1 answer:

tino4ka555 [31]2 years ago

6 0

Answer:

Turbines in coal factories

Explanation:

Turbines in coal factories use steam power to move the turbine flaps and generate static electricity as energy output.

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a ball is thrown horizontally from the roof of a building 45m tall and lands 24m from the base what is the initial speed?

Irina-Kira [14]

Its initial speed is 7.92 m/s

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3 years ago

A material in which charges cannot easily move

weeeeeb [17]

Insulator, or a semi-conductor. A semi-conductor is a specific type of insulator.

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2 years ago

A 10-turn conducting loop with a radius of 3.0 cm spins at 60 revolutions per second in a magnetic field of 0.50T. The maximum e

bogdanovich [222]

Answer:

Maximum emf = 5.32 V

Explanation:

Given that,

Number of turns, N = 10

Radius of loop, r = 3 cm = 0.03 m

It made 60 revolutions per second

Magnetic field, B = 0.5 T

We need to find maximum emf generated in the loop. It is based on the concept of Faraday's law. The induced emf is given by :

$\epsilon=\dfrac{d(NBA\cos\theta)}{dt}\\\\\epsilon=NBA\dfrac{d(\cos\theta)}{dt}\\\\\epsilon=NBA\omega \sin\omega t\\\\\epsilon=NB\pi r^2\omega \sin\omega t$

For maximum emf, $\sin\omega t=1$

So,

$\epsilon=NB\pi r^2\omega \\\\\epsilon=NB\pi r^2\times 2\pi f\\\\\epsilon=10\times 0.5\times \pi (0.03)^2\times 2\pi \times 60\\\\\epsilon=5.32\ V$

So, the maximum emf generated in the loop is 5.32 V.

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3 years ago

Waves that hit a fixed boundary return to the starting point on the____

Jet001 [13]

Answer:

A: Opposite

Explanation:

From Newton's third law of motion, to every action there is an equal an opposite reaction. Thus, when the wave hits a fixed boundary, it is returned as a reflected wave to the starting point albeit on the other side.

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2 years ago

Which one is an example of kinetic energy

allochka39001 [22]

A is correct because kinetic energy is energy in motion. The ball is in motion rolling down the hill.

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2 years ago

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