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Zielflug [23.3K]
3 years ago
13

A student is performing a double-slit experiment to determine the wavelength of a light source. She has measured the distance be

tween dark bands and the distance between the slits and the screen. She still needs to measure:
Question 10 options:

A)

the speed of the light

B)

the width of each slit

C)

the distance between the slits

D)

the angle between the right bisector and the first minima

E)

the distance between the centre of the slits and the first minima
Physics
1 answer:
Harman [31]3 years ago
4 0

Answer:

lights need elewctricity

Explanation:

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The breeze during a sunny day at the beach is usually a result of _________________________________________.                    
N76 [4]
C, Land heats and cools faster than water! 
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3 years ago
Read 2 more answers
I need help on (a)<br> I don't know what equation to use?
Alchen [17]

Impulse = (force) x (length of time the force lasts)

I see where you doodled  (60)(40)  over on the side, and you'll be delighted
to know that you're on the right track !

Here's the mind-blower, which I'll bet you never thought of:
On a force-time graph, impulse (also change in momentum)
is just  the <em>area that's added under the graph during some time</em> !

From zero to 60, the impulse is just the area of that right triangle
under the graph.  The base of the triangle is  60 seconds.  The
height of the triangle is  40N .  The area of the triangle is not
the whole (base x height), but only <em><u>1/2 </u></em>(base x height).

  1/2 (base x height) = 1/2 (60s x 40N) = <u>1,200 newton-seconds</u>

<u>That's</u> the impulse during the first 60 seconds.  It's also the change in
the car's momentum during the first 60 seconds. 

Momentum = (mass) x (speed)

If the car wasn't moving at all when the graph began, then its momentum is  1,200 newton-sec after 60 seconds.  Through the convenience of the SI system of units, 1,200 newton-sec is exactly the same thing as 1,200 kg-m/s .  The car's mass is 3 kg, so after 60 sec, you can write

    Momentum = M x V = (3 kg) x (speed) = 1,200 kg-m/s

and the car's speed falls right out of that. 

From 60to 120 sec, the change in momentum is the added area of that
extra right triangle on top ... it's 60sec wide and only 20N high.  Calculate
its area, that's the additional impulse in the 2nd minute,  which is also the
increase in momentum, and that'll give you the change in speed.


8 0
3 years ago
A charged particle is placed in an external magnetic field and it is moving in a circular path of radius 26m.The magnetic force
ElenaW [278]

Answer:

208 Joules

Explanation:

The radius of the circular path the charge moves, r = 26 m

The magnetic force acting on the charge particle, F = 16 N

Centripetal force, F_c = m·v²/r

Kinetic energy, K.E. = (1/2)·m·v²

Where;

m = The mass of the charged particle

v = The velocity of the charged particle

r = The radius of the path of the charged particle

Whereby the magnetic force acting on the charge particle = The centripetal force, we have;

F = F_c = m·v²/r = 16 N

(1/2) × r × F_c = (1/2) × r × m·v²/r = (1/2)·m·v² = K.E.

∴ (1/2) × r × F_c = (1/2) × 26 m × 16 N =  = (1/2)·m·v² = K.E.

∴ 208 Joules = K.E.

The kinetic energy of an particle moving in the circular path, K.E. = 208 Joules.

4 0
3 years ago
Which of these variables affect the kinetic energy of a body? Select all that apply.
geniusboy [140]
Speed, mass, and acceleration. Acceleration affects the kinetic energy, due to it affecting speed; therefore, the more acceleration, the more of an increase/decrease in kinetic energy.
5 0
3 years ago
Can someone please help me match these up
yaroslaw [1]

Answer:

you need to give the answers choices

Explanation:

4 0
3 years ago
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