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Bingel [31]
3 years ago
15

An iron nail becomes a permanent magnet if it is

Physics
1 answer:
S_A_V [24]3 years ago
8 0

if you stroke it an iron nail with a bar magnet the nail will become a permanent or long lasting magnet.

Hope it's perfect for you.

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How is energy can be changed from one state to another?​
snow_lady [41]

Answer:

Explanation:

Heat is probably the easiest energy you can use to change your physical state. The atoms in a liquid have more energy than the atoms in a solid. There is a special temperature for every substance called the melting point.They are changes in bonding energy between the molecules. If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance. EXAMPLE: Solid ice melting into liquid

5 0
4 years ago
Neptune has a mass that is about 17 times the mass of Earth. The distance between the Sun and Neptune is about 30.1 times the di
marshall27 [118]

Answer: 0.0187 times the force between Sun and Earth.

The gravitational force between two massive bodies is directly proportional to their masses and inversely proportional to the square of distance between them.

F=G\frac {M_1M_2}{d^2}

where G is the gravitational constant.

Let,

The mass of the Sun be M_S

The mass of the Earth beM_E

The mass of the Neptune beM_N

The Distance between Sun and Earth be d_{SE}

The Distance between Sun and Neptune be d_{NE}

It is given that the mass of Neptune is 17 times mass of Earth.

\Rightarrow M_N=17M_E

The distance of Neptune from Sun is 30.1 times the distance of Earth from Sun.

\Rightarrow D_{SN}=30.1D_{SE}

The Force between Earth and Sun is F_{SE}=3.5\times10^{28}N

The Force between Neptune and Sun:

F_{SN}=G\frac{M_SM_N}{D_{SN}^2}=G\frac{M_S17M_E}{(30.1D_{SE})^2}=\frac {17}{30.1^2}G\frac{M_SM_E}{D_{SE}^2}=\frac {17}{30.1^2}F_{SE}=0.0187F_{SE}


5 0
3 years ago
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Which quantity has both a magnitude and a
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(2) impulse is a vector quantity. Energy has no direction, nor does power. Work is a dot product of vector quantities, which makes it a scalar.
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4 years ago
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How many molecules of water are recycled into one molecule of glucose during photosynthesis?
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Answer: A.) 6 molecules of water

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2 years ago
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According to the Big Bang Theory, the density and temperature of the Universe is ___________ now than in the past.
34kurt

Answer:

According to the Big Bang Theory, the density and temperature of the Universe is <u>lower</u> now than in the past.

<em>Hope</em><em> this</em><em> answer</em><em> correct</em><em> </em><em>:</em><em>)</em>

5 0
3 years ago
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