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Masja [62]
3 years ago
7

Why earth have gravity?

Physics
1 answer:
Yuki888 [10]3 years ago
4 0

On earth there is a force within the planet. This force creates a sort of magnet to keep the planet's being and thing on it together. This force also has a role in the solar system as it helps it move.

The source: https://spaceplace.nasa.gov/what-is-gravity/en/

Hope i helped

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Which two statements offer evidence that the clocks energy is conserved?
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Answer:

C is the best answer because we all know that clock is part of our daily lives but we don't know the about its background

3 0
3 years ago
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What characteristics determine how easily two substances change temperature
ValentinkaMS [17]

Answer;

Amount of time the two substances are in contact

Area in contact between the two substances

Specific heat of the material that makes up the substances

Explanation;

The change in temperature of a substance is caused by heat energy. The change in temperature will depend on factors such as mass of the substance, the type of material it is made from, the time taken , specific heat of the material that makes the substance, and also the area of contact.

The amount of time the two substances are in contact affect the change in temperature such that if the two bodies are in contact for a longer time then a bigger change in temperature will be observed.

Specific heat capacity also determines the change in temperature that will be observed, such that a substance with a bigger specific heat capacity will record a small change in temperature.

7 0
3 years ago
A 6.00 cm tall light bulb is placed a distance of 54.2 cm from a double convex lens
BigorU [14]

Answer:

1 / f = 1 / i + 1 / o       thin lens equation

1 / i = 1 / f - 1 / o    =    (o - f) / (o * f)

i = o * f / (o - f)

i = 54.2 * 12.7 / (54.2 - 12.7) = 16.6 cm    image distance

Image is real and inverted and 16.6 / 54.2 * 6 = 1.94 cm tall

7 0
3 years ago
Can an object be in motion and not in motion at the same time? Explain.
kolezko [41]
It could rotate while not advancing distance
5 0
3 years ago
A vector starts at the point (0.0) and ends at (2,-7) what is the magnitude of the displacement
Leto [7]

Answer:

|x| = √53

Explanation:

We are told that the vector starts at the point (0.0) and ends at (2,-7) .

Thus, magnitude of displacement is;

|x| = √(((-7) - 0)² + (2 - 0)²)

|x| = √(49 + 4)

|x| = √53

5 0
3 years ago
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