2 years ago

A compass in a magnetic field will line up __________.

Physics

1 answer:

Anastaziya [24]2 years ago

5 0

Line up in a direction parallel to the magnetic field lines

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Explanation:

As it’s difficult to catch it from up.

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2 years ago

Which statement shows how to correctly convert from the mass of a compound in grams to the amount of that compound in moles?

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mass (grams) x 1 =

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3 years ago

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100 g

100

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2 years ago

A force of 450 N moves a body through 300 cm in the direction of force. Calculate the work

OlgaM077 [116]

Answer:

150J

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2 years ago

What is the magnitude of an electric field that balances the weight of a plastic sphere of mass 2.1 g that has been charged to -

Liula [17]

Answer:

Electric field, $E=6.86\times 10^6\ N/C$

Explanation:

It is given that,

Mass of sphere, m = 2.1 g = 0.0021 kg

Charge, $q=-3\ nC=-3\times 10^{-9}\ C$

We need to find the magnitude of electric field that balances the weight of a plastic spheres. So,

$ma=qE$

a = g

$E=\dfrac{mg}{q}$

$E=\dfrac{0.0021\ kg\times 9.8\ m/s^2}{-3\times 10^{-9}\ C}$

$E=6860000\ N/C$

$E=6.86\times 10^6\ N/C$

Hence, the magnitude of electric field that balances its weight is $6.86\times 10^6\ N/C$ . Hence, this is the required solution.

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2 years ago