All categories

4 years ago

Please help im on a timer!! 50 points!!

Physics

1 answer:

Crank4 years ago

5 0

Strength of the magnetic field: C) 20 T

Explanation:

When a conductive wire moves in a region with magnetic field, an electromotive force is induced in the wire due to the phenomenon of electromagnetic induction.

If the wire moves perpendicular to the field, the magnitude of the induced emf in the wire is given by

$\epsilon=BLv$

where

B is the strength of the magnetic field

L is the length of the wire

v is the speed of the wire

For the wire in this problem, we have:

$\epsilon=12 V$ is the emf induced in the wire

v = 3.0 m/s is the speed of the wire

L = 0.20 m is its length

Solving for B, we find the strength of the magnetic field:

$B=\frac{\epsilon}{Lv}=\frac{12}{(0.20)(3.0)}=20 T$

Learn more about magnetic fields:

brainly.com/question/3874443

brainly.com/question/4240735

#LearnwithBrainly

You might be interested in

he force of gravity is an inverse square law. This means that, if you double the distance between two large masses, the gravitat

Kryger [21]

The force decreases by a factor of 4, because 4 is 2-squared. (C).

And they don't have to be "large" masses. The force behaves exactly the same between the lint in your pocket and a speck of dust on a table in the house across the street.

4 0

3 years ago

PLEASE HELP!! What needs to happen for solid water to change to liquid water?

Vlad [161]

Answer:

The answer is D.

Explanation:

I took the test.

7 0

2 years ago

An engineer is designing a process for a new transistor. She uses a vacuum chamber to bombard a thin layer of silicon with ions

adelina 88 [10]

Answer:

$E=5.7\times 10^{-3}\ V/m$

Explanation:

Given that

$m_p=5.18\times 10^{-26}\ kg$

re= 46 cm

Vp= 180 m/s

We know that

$E=\dfrac{\Delta V}{r}$

$\Delta V=\dfrac{1}{4}\dfrac{m_pv_p^2}{e}$

$E=\dfrac{1}{4}\dfrac{m_pv_p^2}{e.r_e}$

Now by putting the all given values in the questions

$E=\dfrac{1}{4}\times \dfrac{5.18\times 10^{-26}\times 180^2}{1.6\times 10^{-19}\times 0.46}$

$E=5.7\times 10^{-3}\ V/m$

So the average electric field is $E=5.7\times 10^{-3}\ V/m$ .

6 0

3 years ago

Which of the following statements is an accurate description of sound transmission through various mediums? A. Gases conduct sou

ivolga24 [154]

C. Sound insulators prevent sound from being transmitted better than elastic solids

6 0

4 years ago

The car salesman tells you that the car can go from a stop position to 60 mph in six seconds is giving you the car’s rate of

slava [35]

The salesman is telling you the average magnitude of the car's acceleration.

| Acceleration | = (change in speed) / (time for the change)

| Acceleration | = (60 mi/hr) / (6 sec)

| Acceleration | = 10 miles/hr-sec

That would be 36,000 miles per hour squared,
or 0.0028 mile per second squared.

5 0

4 years ago