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3 years ago

Electromagnets are created by

Physics

2 answers:

LiRa [457]3 years ago

6 0

Answer:

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 .wrapping the coil around a piece of iron.

VladimirAG [237]3 years ago

4 0

Answer:

electromagnet: A magnet made of an insulated wire coiled around an iron core (or any magnetic material such as iron, steel, nickel, cobalt) with electric current flowing through it to produce magnetism. The electric current magnetizes the core material.

Explanation:

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3 m/s

zloy xaker [14]

Answer:

0.75Hz

Explanation:

Given parameters:

Speed of the wave = 3m/s

Wavelength = 4m

Unknown:

Frequency of the wave = ?

Solution:

The speed of a wave is given by the expression below:

Speed = frequency x wavelength

Frequency = $\frac{Speed }{Wavelength}$ = $\frac{3}{4}$ = 0.75Hz

5 0

3 years ago

DUE TODAY BEST ANSWER GET BRAINLIE

SCORPION-xisa [38]

Kinetic energy decreases if either the mass or the velocity of the object decreases or if both decrease. and Kinetic energy increases if either the mass or the velocity of the object increases or if both increase.

Explanation:

6 0

3 years ago

Determine the molar concentration of 4 moles of HCL dissolved in 2500 ml of solution

Reptile [31]

Answer:

1.6 molar

Explanation:

C=number of moles/volume

convert ml to L

V =2.5L

C= 4/2.5

=1.6 molar

4 0

1 year ago

Why is an absorption spectrum especially useful for astronomers?.

creativ13 [48]

Answer:

It has dark lines in it that allow astronomers to determine what elements are in the star. red-shifted (shifted toward the red end of the light spectrum).

Explanation:

4 0

2 years ago

Two asteroids are found at the same distance from the Sun. However, one asteroid is twice as massive the other. According to New

astraxan [27]

Answer:

IS TWICE THAT OF THE GRAVITATIONAL FORCE BETWEEN THE SMALLER ASTEROID AND THE SUN

Explanation:

The equation for gravitational force is:

$F = G * \frac{m1 * m2}{r^2}$

where G is the gravitational constant.

Given that distance remains constant, and the mass of the bigger asteroid is bigger, we can get the following relation:

$G * \frac{2*m1 * m2}{r^2} = G * \frac{m1 * m2}{r^2}$

Here we can see that multiplying the mass by 2 gives us 2 times the gravitational force for the bigger asteroid.

Thus, the gravitational force for the bigger asteroid and the sun is two times that of the smaller asteroid and the sun.

4 0

3 years ago

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