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2 years ago

What is magnetic shielding?

1 answer:

5 0

It is basically shielding a magnetic field. This can be done with rubber or any other material that is thick. Normally small magnets already block the shield.

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The distance between the first and fifth minima of a single-slit diffraction pattern is 0.350 mm with the screen 39.0 cm away fr

rjkz [21]

Answer: a) the width is 2.54 mm

b) the angle is 0.012°

Explanation:

we have the equation:

λ = zw/(L*m)

Where is the distance for the middle of the screen, L is the distance to the screen, w is the widht of the slit and λ is the wavelength.

now we can isolate z and get:

z = λL*m/w

and the distance between the 5 minimum and the first one is 0.035mm

then:

0.035mm = λL*5/w - λL*1/w = λL*4/w

now we can solve it for w.

0.35mm = 570nm*39.0cm*4/w

now, we have all diferent units, lets use nanometers.

1cm = 1x10^-2 m

1mm = 1x10^-3 m

1nm = 1x10^-9m

then: 1 cm = 1x10^7 nm

1 mm = 1x10^6 nm

then we have:

0.35x10^6 nm = 570nm*39.0x10^7 nm*4/w

w = (570nm*39.0x10^7 nm*4)/0.35x10^6 nm =(570nm*39.0*10*4)/0.35

w = 2540571.4 nm

it is a bigg number, let's write it in milimeters:

w = (2540571.4/10^6) mm = 2.54 mm

the first minimum can be obtained by the equation w*sinθ = mλ by using m = 1

then we have:

2540571.4 nm*sinθ = 570 nm

sinθ = 570/2540571.4 = 0.000224

θ = asin(0.00022) = 0.012°

5 0

3 years ago

When a hypothesis is tested many times and supported by data, it becomes a __________. control theory solution conclusion

Kitty [74]

I think it would then become a theory

5 0

3 years ago

Based on the diagram of a roller coaster car on a roller coaster track, what statement is true?

nikklg [1K]

Answer:

the answer is c

Explanation:

4 0

3 years ago

One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. Each l

frez [133]

To solve this problem we will first proceed to find the volume of the hemisphere, from there we will obtain the mass of the density through the relation of density. Finally the mass of the stone will be given between the difference in the mass given in the statement and the one found, that is

The volume of a Sphere is

$V = \frac{4}{3} \pi r^3$

Then the volume of a hemisphere is

$V =\frac{1}{2} \frac{4}{3} \pi r^3$

With the values we have that the Volume is

$V =\frac{1}{2} \frac{4}{3} \pi (8.4/2)^3$

$V = 155.17cm^3$

Density of water is

$\rho = 1g/cm^3$

And we know that

$\text{Mass of water displaced} = \text{Density of water}\times \text{Volume of hemisphere}$

$m = 1g/cm^3 * 155.17cm^3$

$m = 155.17g$

So the net mass is

$\Delta m = m_s-m_w$

$\Delta m = 155.17-23$

$\Delta m = 132.17g$

Therefore the mass of heaviest rock is 132.17g or 0.132kg

4 0

3 years ago

What makes a balloon electrically charged?

Orlov [11]

Answer:

When a rubber balloon is rubbed against human hair, electrons are transferred from the hair to the rubber, giving the balloon a net negative charge, and leaving the hair with a net positive charge. As the balloon is pulled away, the opposite charge on the hair causes it to be attracted to the balloon.

Explanation:

do u like my prophile pic

7 0

3 years ago

What is magnetic shielding?​

What is magnetic shielding?