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3 years ago

What are two types of forces exerted by magnets?

Physics

2 answers:

tamaranim1 [39]3 years ago

7 0

Answer:

The other two forces are electrostatic and gravitational

Explanation:

mamaluj [8]3 years ago

4 0

Attraction and repulsion

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A futuristic train rushes past you at an incredible, relativistic speed such that it appears to only be 80% as long as you know

Fed [463]

Answer:

v = 0.6c = 1.8 x 10⁸ m/s

Explanation:

From Einstein's theory of relativity, we know that the length of an object contracts while traveling at a speed relative to speed of light. The contraction is according to following equation:

$L = L_{0}\sqrt{1 - \frac{v^2}{c^2}}$

where,

L = Relative Length

L₀ = Rest Length

According to given:

L = 0.8 L₀

c = speed of light = 3 x 10⁸ m/s

v = relative speed of train = ?

Therefore,

$0.8L_{0} = L_{0}\sqrt{1 - \frac{v^2}{c^2} } \\\\0.8 = \sqrt{1 - \frac{v^2}{c^2} }$

squaring on both sides:

$0.64 = 1-\frac{v^2}{c^2}\\\\\frac{v^2}{c^2} = 1-0.64 \\v^2= 0.36c^2\\$

taking square root on both sides:

3 0

3 years ago

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Roman55 [17]

A it’s liter okkkkkkkk

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3 years ago

What are the consequences of fertilizing chemicals in water?

Archy [21]

It can cause the water to create algae.

5 0

4 years ago

A pulley is used to raise a heavy crate. With the pulley it only takes an effort force of 223 N to

RoseWind [281]

Answer:

1784/223 = 8:1

Explanation:

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3 years ago

Tech A says a camshaft position sensor must be positioned correctly to accurately signal the position of the camshaft to the pow

qaws [65]

Answer:

Both Tech A and Tech B

Explanation:

It's important to position sensor accurately to the position of camshaft to the powertrain control in the ignition module as said by Tech A. Equally, to achieve what Tech A says, a special tool can be used for comparing the position of camshaft sensor to crankshaft sensor. Therefore, both technicians are correct.

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3 years ago