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3 years ago

The primary purpose of describing planetary orbits in terms of epicycles and deferents was to account for the

1 answer:

3 0

Retrograde. Planets seem to move forward and then backward sometimes. This is really because we pass them as we move in our orbit but astronomers wanted to try to describe the solar system with earth at the center so elaborate models were employed.

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Explain why the water that is used to cool the reactor vessel of a nuclear power plant is kept separate from the water that is h

aliya0001 [1]

Explanation:

Reasons:

- to separate and

- to avoid formation of electricity.

8 0

1 year ago

A glass of water has a temperature of 31 degrees Celsius. What state of matter is it in?

Lesechka [4]

Answer:

Liquid

Explanation:

Water...

- below 0 degrees Celsius is a solid.

- above 0 degrees Celsius is a liquid.

- above 100 degrees Celsius is a gas.

4 0

2 years ago

newton’s second law states that f=m x a (force is mass times acceleration). which example would have the greatest acceleration

Diano4ka-milaya [45]

Answer:

An object was moving north at 10 meters per second. ...

8 0

3 years ago

James (mass 95.0 kg ) and Ramon (mass 67.0 kg ) are 20.0 m apart on a frozen pond. Midway between them is a mug of their favorit

SOVA2 [1]

Answer:

The speed of James is 0.776 m/s

Explanation:

Step 1: Data given

mass of James = 95.0 kg

mass of Ramon = 67.0 kg

We consider James and Ramon and the rope to a single system. This means that the net external forces on the system = 0

.The momentum = 0, so the sum of the momentum of each part must be 0 in total.

Step 2: Calculate the speed of James

m(james) *v(James) = m(Ramon) * v(Ramon)

with m(James) = the mass of James = 95.0 kg

with v(James) = speed of James = TO BE DETERMINED

with m(Ramon) = mass of Ramon = 67.0 kg

with v(Ramon) = speed of Ramon = 1.10 m/s

v(James) = (m(Ramon) * v(Ramon))/ m(james)

v(James) = (67.0 kg* 1.10 m/s) / 95.0 kg

v(James) = 0.776 m/s

The speed of James is 0.776 m/s

8 0

3 years ago

Which property of the sound wave changes when the volume is increased on a radio?.

ch4aika [34]

Answer:

amplitude

Explanation:

When we increase the volume of a sound, the amplitude of the wave is increased. The frequency of a wave is related to its pitch. If the pitch is high, then the frequency of the wave is high. This means that the wave will looked squashed on an oscilloscope trace.

8 0

1 year ago