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3 years ago

The Earth is 149.6 million km from the Sun. What is this distance also known as?

Physics

1 answer:

guajiro [1.7K]3 years ago

5 0

It's as far as I remember one Astronomical Unit

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A magnetic compass is placed near an insulated copper wire. When the wire is connected to a battery and a current is created, th

lawyer [7]

Explanation:

When the wire is connected to a battery, the compass needle moves and changes its position. This happens because the needle magnetizes the copper wire, thus, creating a force.

While the current in the wire produces a magnetic field and exerts a force on the needle. The insulation on the wire becomes energized and exerts a force on the needle. Hence, the compass needle moves and changes its position.

6 0

3 years ago

Bird bones have air pockets in them to reduce their weight–this also gives them an average density significantly less than that

lakkis [162]

Answer:

a)39ml

b)39g

c)1.1g/ml

Explanation:

Hello!

To solve this exercise use the following steps

1. When Archimedes discovered how to determine the irregular volume of an object by weighing it in the air and in an algua, he found that its volume is equal to the ratio between the differences of the masses (heavy in the air and in the water) and the density of the water (= 1g / ml)

$V=\frac{43g-3.6g}{1g/ml} =39.4ml$

2.as the principle of archimedes says, the displaced volume of water is equal to the volume of the bone which means that 39.4ml of water was displaced, taking into account that the density of water is the ratio between mass and volume we can determine the displaced body of water

$density=\frac{m}{V} \\m=V(density)\\m=(39ml)(1g/ml)=39g$

3. we use the density equation to find the bone density

$density=\frac{43g}{39ml} =1.1g/ml$

8 0

3 years ago

State the relative position for the sun and earth during the lunar eclipse (ASAP)

Mademuasel [1]

Answer:

Solar eclipses result from the Moon blocking the Sun relative to the Earth; thus Earth, Moon and Sun all lie on a line. Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.

8 0

3 years ago

Predict what would happen if earth’s plates stopped moving.

Hatshy [7]

We would have earthquakes and tsunamis, i think, i don't really know?!?

4 0

4 years ago

You exert a vertical force of 72 newtons to lift a box to a height of 1.0 meter in a time of 2.0

Monica [59]

Answer:

36 W

Explanation:

Power = work / time

Work = force × distance

P = F d / t

P = (72 N) (1.0 m) / (2.0 s)

P = 36 W

6 0

3 years ago