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3 years ago

In which direction does a bag at rest move when a force of 20 newton's is applied from the right?

Physics

1 answer:

Olegator [25]3 years ago

8 0

The bag moves to the left.

This is because of Newton's third law of motion that states:

For every action force on a body, there is an opposite and equal reaction force.

Thus pushing the bag from the right makes it move to the left.

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A current of 32.1 mA flows in a silver wire of diameter 4.57 mm. Find the electric field strength inside the wire. The conductiv

joja [24]

Answer:

$E = \rho J = 3.13\times 10^{-5} ~{\rm N/m}$

Explanation:

The relationship between the current and the electric field inside a wire is given by the following equation:

$\rho = \frac{E}{J}$

where ρ is the resistivity, and J is the current density. The current density is the current per area:

$J = \frac{I}{A} = \frac{31.2 \times 10^{-3}}{\pi (\frac{4.57 \times 10^{-3}}{2})^2} = 1957$

The resistivity is the reciprocal of conductivity. Therefore,

$\rho = \frac{1}{6.25 \times 10^7} = 1.6 \times 10^{-8}$

Finally, the electric field can be found:

$E = \rho J = 3.13\times 10^{-5} ~{\rm N/m}$

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2 years ago

Predict Two objects have unlike charges. How

Kruka [31]

Answer:b

Explanation:

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2 years ago

Select the correct answer.

Morgarella [4.7K]

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1 year ago

How do H-R diagrams help scientists compare new stars with the Sun? In your answer, name one type of data that H-R diagrams do n

damaskus [11]

Answer

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Explanation:

Hope this helped you!

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2 years ago

Read 2 more answers

Holding onto a tow rope moving parallel to a frictionless ski slope, a 70.1 kg skier is pulled up the slope, which is at an angl

lara [203]

Answer:

given,

mass of the skier = 70.1 Kg

angle with horizontal, θ = 8.6°

magnitude of the force,F = ?