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3 years ago

1. A 24 kg rock is resting on the floor. How much potential energy does it have? Explain.

Physics

1 answer:

In-s [12.5K]3 years ago

8 0

Relative to the floor its resting on, its height is zero, so it potential energy is zero.

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ikadub [295]

Answer:

A, Magnetism

Explanation:

An ordinary electric generator produces electric power by spinning a strong magnet inside a set of wire coils. As the magnet spins, its magnetic field sweeps across the coils and gives rise to electric fields in those coils.

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3 years ago

What mechanisms do astronomers believe is responsible for making the Sun's outer atmosphere so much hotter than its photosphere?

IrinaVladis [17]

Answer:

magneto hydrodynamic( MHD) waves

Explanation:

The surface of the Sun transmits magneto hydrodynamic( MHD) waves to its atmosphere. These waves carry energy from the sun's surface to its atmosphere ( Corona) and heat up the atmosphere to such extent that its temperature rises to many time than that of the surface temperature of the Sun.

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3 years ago

A conducting wire formed in the shape of a right triangle with base b = 25 cm and height h = 66 cm and having resistance R = 1.1

NemiM [27]

Answer:

$\omega=4.19 \,rad.s^{-1}$

Explanation:

To find:

angular frequency of rotation, ω=?

Given that:

base of wire triangle, b = 25 cm

height of wire triangle, h = 66 cm

electrical resistance , R = 1.1 Ω

time taken to make 1 rotation about the height through the base,T= 1.5s

magnetic field in +z direction out of the screen, B = 1.8 T

Since the wire does not carry any current therefore the magnetic field will have no impact on it.

Now, as we know:

angular frequency

$\omega= \frac{2\pi}{T}$

$\omega=4.19 \,rad.s^{-1}$

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3 years ago

How many square meters are in 1330 square feet

andriy [413]

There are 123.56 of them. (rounded)

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4 years ago

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