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2 years ago

The force between two charges, q, and 92, is F. If the distance between the

Physics

1 answer:

Sholpan [36]2 years ago

4 0

Answer:

Explanation:

F = kQ₁Q₂/d²

F' = k2Q₁2Q₂/d²

F' = 4(kQ₁Q₂/d²)

F' = 4F

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Levart [38]

Answer:

The change of the momentum of the ball is $-19.8\, \frac{mkg}{s}$

Explanation:

We should find $\varDelta\overrightarrow{p}=\overrightarrow{p_{f}}-\overrightarrow{p_{i}}$ (1)with $\overrightarrow{p_{i}}$ the initial momentum and $\overrightarrow{p_{f}}$ the final momentum. Linear momentum is defined as $\overrightarrow{p}=m\overrightarrow{v}$ , using that on (1):

$\varDelta\overrightarrow{p}=m \overrightarrow{v_{f}}-m \overrightarrow{v_{i}}$ (2)

It's important to note that momentum and velocity are vectors and direction matters, so if +x direction is the direction towards the wall and the -x direction away the wall $\overrightarrow{v_{i}}=+2.2\, \frac{m}{s}$ and $\overrightarrow{v_{f}}=-2.2\, \frac{m}{s}$ so (2) becomes:

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3 years ago

The amount of work done against friction to slide a box in a straight line across a uniform, horizontal floor depends most on th

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Amount of force that is applied to the box

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A battery is used to power a flashlight. When the flashlight is in use, what type of energy is lost during energy transformation

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The answer is chemical energy

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Answer:

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Explanation:

Option A is correct. (The faster object encounters more resistance)

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Shape of the object

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