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ryzh [129]
2 years ago
12

Ellipses have only one focus. Question 14 options: True False

Physics
1 answer:
laila [671]2 years ago
6 0

Answer:

False. This is because ellipses have 2 focus points and not only one.

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Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, spee
Andru [333]

Answer:

Light slows down when it moves from air into water.

Explanation:

It is the property of light that travels faster in a less dense medium.

In a more dense medium, the speed of the light slows down and bends towards the normal.

The air is less dense medium and water is a more dense medium.

When light passes from air to water, the light bends.

This is known as the refraction of light.

4 0
3 years ago
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OLga [1]

Answer:

Doppler Theory

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If a sample of an unknown material with a mass of 0.68 g and a volume of 0.8 cm3 is dropped
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4 0
3 years ago
To transform electrical energy into mechanical energy, the electromagnet in a
lidiya [134]

Answer:

Motors commonly contain a "commutator" which allows a magnetic field due to a loop of wire to always be in a say "clockwise or counterclockwise" direction even tho the loop of wire is rotating.

That means that magnetic field due to the surrounding magnets is always in the same direction, but the magnetic field due to the rotating   loop of wire is continually changing so that it will always oppose the surrounding field which remains in a constant direction.

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