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aliina [53]
3 years ago
9

What is current?

Physics
2 answers:
IrinaVladis [17]3 years ago
7 0

Answer:

B

Explanation:

Current is only measured in Amperes.

D makes little to no sense and I believe A somewhat relates to static electricity, not current.

tatiyna3 years ago
3 0

Answer:

The answer is (B) the movement of electric charge.

Explanation:

The definition of an electric current is the flow of electric charge.

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What scientific device fascinated Newton as a Boy?
Wittaler [7]

Answer:

As a boy, Sir Isaac Newton was fascinated by a Windmill.

A drawing of a Windmill, which many believe to have been sketched by the young Newton over three an half centuries ago was discovered in his childhood home on a wall.

Cheers!

7 0
4 years ago
A double-slit experiment is set up using red light (λ = 706 nm). A first order bright fringe is seen at a given location on a sc
Elanso [62]

Answer:

λ = 470.66 nm

Explanation:

for bright fringey_m = \frac{m\lambda D}{d}

D= distance between slit and screen

d= distance between the slits

for first order bright fringe m = 1,

        y_1 = \frac{1\lambda D}{d}

         y_1 = {706*D}{d}

for dark fringe,we have

y_m = {(m + 1/2)\lambda D}{d}    

Now to get the dark fringes at the same location we should have;

(706)D/d = (m + 1/2)λD/d    

put m = 1

(1 + 1/2)λ = (706)

λ = 470.66 nm

6 0
4 years ago
I need 1, 2 and 3 <br><br> Please help!
svetoff [14.1K]

1)Kenetic Energy is defined as energy which a body possesses by virtue of being in motion. 2)KE) is KE = 0.5 x mv2. Here m stands for mass, the measure of how much matter is in an object, and v stands for the velocity of the object, or the rate at which the object changes its position..

And I hope this helped :)

7 0
3 years ago
A heavy copper ball of mass 2 kg is dropped from a fiftieth-floor apartment window. Another one with mass 1 kg is dropped immedi
STALIN [3.7K]

Answer:

C

Explanation:

Because everything on Earth falls at the same speed, the masses of the balls do not matter. Since the acceleration due to gravity is constant, their speeds will both be increasing at the same rate, and therefore the difference in speeds would remain constant until they hit the ground. Hope this helps!

5 0
3 years ago
A bar magnet whose magnetic dipole moment is 21 A·m2 is aligned with an applied magnetic field of 3.6 T. How much work must you
iren [92.7K]

Answer:

The amount of work must be do to rotate the bar magnet is 151.2 J

Explanation:

Given:

Magnetic moment \mu = 21 A. m^{2}

Magnetic field B = 3.6 T

To find work do to rotate the bar magnet,

From the formula of work done in case of magnetic field,

    U = \mu .B \cos 0 -\mu .B \cos 180

Here \theta changes 0 to 180

But \cos 180 = -1

    U = 2\mu B

    U = 2 \times 21 \times 3.6

    U = 151.2 J

Therefore, the amount of work must be do to rotate the bar magnet is 151.2 J

3 0
3 years ago
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