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3 years ago

Why does electrical current always flow from areas of negative charge to areas of positive charge?

2 answers:

7 0

<span>The electric current is made up of electrons. Electrons are negatively charged particles and therefore will be attracted to the positive, since opposites attract. </span>

dexar [7]3 years ago

3 0

<span>Negative is attracted to positive. </span>

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The heat pump is designed to move heat. This is only possible if certain relationships between the heats and temperatures at the

Pie

Answer:

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Explanation:

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4 years ago

The slope on a distance-time graph shows a ball moving from 20 m to 40 m in 1 s and from 40 m to 80 m in the next second

eduard

The ball is accelerating

Explanation:

On a distance-time graph, the slope of the graph represents the speed of the object represented.

Let's therefore calculate the slope (so, the speed of the ball) in the two intervals given.

In the first second, we have:

$\Delta y = 40 - 20 = 20 m\\\Delta x = 1 s$

So the average speed is

$v_1 = \frac{\Delta y}{\Delta x}=\frac{20}{1}=20 m/s$

In the next second, we have:

$\Delta y = 80 - 40 = 40 m\\\Delta x = 1 s$

So the average speed is

$v_2 = \frac{\Delta y}{\Delta x}=\frac{40}{1}=40 m/s$

We notice that the speed of the ball has increased from 20 m/s in the first second to 40 m/s in the next second: this means that the speed of the ball is increasing, and therefore, the ball is accelerating.

Learn more about acceleration:

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8 0

3 years ago

Please help with 1 and 4

KIM [24]

Number 4 is : a light hour is a measure of time in space used to calculate the length of time between one object to another and one light hour equals 1.079 × 109 kilometers or 1.079e+9

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3 years ago

What is the area of space around a magnet called?

erma4kov [3.2K]

Answer:

These acts of attraction and repulsion are called “magnetism”, and the magnetic space around a magnet is called the “magnetic field”

Explanation:

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3 years ago

How can you pull a rope with equal but opposite forces

Ivahew [28]

You want to do it all by yourself ? Nothing to it !

Take a piece of rope that's maybe 12 to 18 inches long. Take one end
of the rope in each hand, raise your hands up in front of you, and make
like you're trying to stretch the rope. You'll automatically make the forces
of your hands equal and opposite, so that the rope just stays there in front
of you and doesn't move.

8 0

4 years ago