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sergejj [24]
3 years ago
8

Why can objects be made to float in a magnetic field?

Physics
1 answer:
dimulka [17.4K]3 years ago
6 0
I would say that the answer is C
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ILL MARK BRAINLIEST
77julia77 [94]

Answer: B

Longitudinal wave

Explanation:

Transverse waves have crests and troughs

Longitudinal waves have compressions and rarefactions. A compression is where the density of the wave medium is highest. While a rarefaction is where the density of the wave medium is lowest.

Since sound wave is a longitudinal wave. And longitudinal wave exists apart from sound, we can therefore conclude that it's a longitudinal wave in spring.

8 0
2 years ago
What is the name of Newton's first law of motion?
Ne4ueva [31]
A) law of inertia. an object in motion stays in motion
3 0
2 years ago
An inductor has inductance of 0.260 H and carries a current that is decreasing at a uniform rate of 18.0 mA/s.
nignag [31]

Answer:

The self-induced emf in this inductor is 4.68 mV.

Explanation:

The emf in the inductor is given by:

\epsilon = -L\frac{dI}{dt}

Where:

dI/dt: is the decreasing current's rate change = -18.0 mA/s (the minus sign is because the current is decreasing)

L: is the inductance = 0.260 H

So, the emf is:

\epsilon = -L\frac{dI}{dt} = -0.260 H*(-18.0 \cdot 10^{-3} A/s) = 4.68 \cdot 10^{-3} V

Therefore, the self-induced emf in this inductor is 4.68 mV.  

I hope it helps you!

6 0
3 years ago
The way light bounces off a minerals surface is described by the minerals?
Step2247 [10]
Luster I think is what you are looking for
6 0
2 years ago
PLS ANSWER FAST WILL GIVE BRAINLY TIMED TEST
solong [7]
A=F/m
a=(3000000)/(20000)
a=15 m/s^2
4 0
2 years ago
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