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3 years ago

Moving a wire through a magnetic field created by two stationary permanent magnets will...:

Physics

1 answer:

slega [8]3 years ago

7 0

Answer:

Explanation:

Given that a Moving a wire through a magnetic field created by two stationary permanent magnets will...:cause the magnets to move.

create a current through the wire.

produce no visible effect.

cause the magnetic field to flow in the opposite direction.

According to faraday's law, the EMF will be induced. And the induced EMF will definitely create electric current through the wire.

Therefore, option B is the best answer.

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A scientific law tells us what nature will do under certain conditions.<br> True<br> False

sergij07 [2.7K]

Hello There!

This Is A "True" Statement.

<em>A scientific law tells us what nature will do under certain conditions.</em>

6 0

3 years ago

If the 0.09-mm-diameter tungsten filament in a light bulb is to have a resistance of 0.11 Ω at 20∘C, how long should it be?

skad [1K]

Answer:

Length L=0.0125 m

Explanation:

Given data

Resistance R=0.11Ω

Temperature T=20°C

Resistivity of tungsten at 20°C p=5.6×10⁻⁸Ω.m²

Radius of filament r=0.09/2 =0.045 mm =0.045×10⁻³m

To find

Length of filament L

Solution

The Cross section of area of filament is given as:

$A=\pi r^{2}\\ A=\pi (0.045*10^{-3})^{2}\\A=6.3585*10^{-9}m^{2}$

The Resistance of a material is given as:

$R=p\frac{L}{A} \\L=\frac{AR}{p}\\ L=\frac{(6.3585*10^{-9})(0.11)}{5.6*10^{-8}}\\L=0.125m$

6 0

3 years ago

What is the acceleration due to gravity in a region where a simple pendulum having a length 75.000 cm has a period of 1.7357 s?

Ksju [112]

Answer:

Explanation:

T = 2π $\sqrt{L/g}$

(T / 2π)² = L/g

g = 4π²L/T²

g = 4π²(0.75000)/(1.7357)²

g = 9.82814766...

g = 9.8281 m/s²

6 0

2 years ago

Tell the different energy transformations that happen in each of these items

Alik [6]

Answer:

Television: Electricity to light Toaster: Electricity to Heat

Explanation:

ENERGYY

3 0

3 years ago

A car takes 10 s to go from v = 0 m/s to v = 25 m/s at constant acceleration. If you wish to find the distance traveled using th

german

Initial velocity (u) = 0 m/s

Final velocity (v) = 25 m/s

time taken (t) = 10s

acceleration (a) = ?

Now,

Acceleration is rate of change of velocity, so formula is

a = (v - u)/t

a = (25 - 10)/10

a = 15/10

a = 1.5 m/(s^2)

Use this value of a.

5 0

4 years ago