3 years ago

How are electromagnets made and how do they work?

1 answer:

8 0

Electromagnets

When an electric current flows in a wire, it creates a magnetic field around the wire. This effect can be used to make an electromagnet. A simple electromagnet comprises a length of wire turned into a coil and connected to a battery or power supply.

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soldier1979 [14.2K]

Not pushing yourself hard enough is the answer since your heart rate doesn't even hit your lower minimum.
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4 years ago

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Crazy boy [7]

The answer would be Power

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3 years ago

An explosion occurs 34 km away. the time it takes for its sound to reach your ears, traveling at 340 m/s, is

Murrr4er [49]

Let's convert the distance in meters first:
$d=34 km=34000 m=3.4 \cdot 10^4 m$
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$t= \frac{S}{v}= \frac{3.4 \cdot 10^4 m}{340 m/s}=100 s$

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3 years ago

a lamp hangs from the ceiling at the height of 2.9 m. if the lamp breaks and falls to the floor what is its impact speed

nydimaria [60]

This is a problem that can be solved using free-fall motion analysis. Since the displacement (2.9m) is given, we can use the following equation to solve for the impact speed:

V^2 = 2gh

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4 years ago

A bullet is fired straight up from ground level for a distance of 1688.3m at a speed of 182 m/s. How long does it take for the b

Vitek1552 [10]

S= 1/2 x 182 x t = 1688.3
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3 0

3 years ago