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3 years ago

Explain why the reflection of light off ground glass changes from diffuse to specular if you spill water on it

Physics

1 answer:

Basile [38]3 years ago

4 0

Because when you spill water on it, the reflection comes from the surface of the water, not the ground glass.

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son4ous [18]

Answer:

One 200 is bigger than 100

Explanation:

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3 years ago

Read 2 more answers

PLEASE HURRY THIS IS URGENT

Irina-Kira [14]

3. Rubbing Sticks together to create a fire.

5. Gravity.

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3 years ago

An electron is projected with an initial speed v0 = 1.10 x 10⁶ m/s into the uniform field between the parallel plates. The dista

ArbitrLikvidat [17]

Answer:

a) $E=364N/C$

b) No

Explanation:

A) Because the electron is affected by an acceleration force in this case by the electric field, we can use the formulas of 2-dimension movement.

We will assume the electron missed the upper plate, so we need to calculate the time to travel all the way through the plate, that is:

$x=v_x*t$

$where:\\x=distance\\v=speed\\t=time$

so:

$t=\frac{x}{v_x}=\frac{0.02m}{1.6\cdot 10^6m/s}\\\\t=1.25\cdot10^{-8}$

the electron experiences an accelerated motion in the vertical direction, so we can obtain the acceleration of the electron:

$y=\frac{1}{2}.a.t^2\\\\where:\\y=vertical\_distance\\a=acceleration\\t=time$

so:

$a=\frac{2.y}{t^2}\\\\a=\frac{2*(\frac{0.01}{2}m)}{(1.25\cdot10^{-8}s)^2}\\\\a=6.4\cdot10^{13} m/s^2$

now we can use the relation:

$F=m.a=E.q\\so\\E=\frac{m.a}{q}$

$where:\\\\E=electric\_field\\m=electron\_mass=9.1\cdot10^{-31}kg\\q=Charge=1.6\cdot10^{-19}\\a=acceleration$

Now we can calculate the electric field:

$E=\frac{9.1\cdot10^{-31}kg\cdot6.4\cdot10^{13}m/s^2}{1.6\cdot10^{-19}C}\\\\E=364N/C$

B) Because the proton has the same charge but positive it will go in the opposite direction, so because we assume the electron didn't touch the plate, the proton won't.

5 0

3 years ago

by doing a nuclear diffraction experiment, you measure the de broglie wavelength of a proton to be 8.29 fm. (a) what is the spee

Irina18 [472]

By the de Broglie wavelength equation, the speed of proton is 0.47 × $10^{8}$ m/s.

λ = h / mv

λ = wavelength, given = 8.29 fm

h = plank's constant, given = 6.626 × $10^{-34}$

m = mass, given = 1.672 × $10^{-27}$ kg

v = velocity

Now, v = h / mλ

Put the values in formula, v = h / mλ

v = 0.47 × $10^{8}$ m/s

Therefore, the speed of proton is 0.47 × $10^{8}$ m/s.

Learn more about de Broglie wavelength here:- brainly.com/question/15330461

#SPJ4

6 0

1 year ago

A fire hose ejects a stream of water at an angle of 35.0Â° above the horizontal. The water leaves the nozzle with a speed of 25.

erma4kov [3.2K]

Answer:

The fire hose be located 59.80 m away to hit the highest possible fire.

Explanation:

Vertical velocity = 25 sin35 = 14.34 m/s

Acceleration = -9.81m/s²

At maximum height , final vertical velocity = 0 m/s

We have v = u + at

Substituting

0 = 14.34 - 9.81 x t

t = 1.46 s

Time of flight of water = 2 x 1.46 = 2.92 s

Horizontal velocity = 25 cos35 = 20.48 m/s

Horizontal displacement = 20.48 x 2.92 = 59.80 m

So, the fire hose be located 59.80 m away to hit the highest possible fire.

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3 years ago