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dolphi86 [110]
3 years ago
15

When viewed in yellow light, an object that reflects all the colors of light will appear_____.

Physics
1 answer:
Bas_tet [7]3 years ago
7 0

Answer:

Yellow.

Explanation:

An object that reflects all the incidents colors of light will surely reflect off the color yellow, and when the reflected ray hits our eyes, we will perceive the object as yellow. The object that reflects off all colors appears to us as white. So if you want to make sure, then just shine yellow light on a white fabric and see what happens!

What you will observe of course is a yellow fabric. Similarly, if you shine red light onto the fabric, it will appear red, and so on for all colors.

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When a potential difference of 154 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge d
tester [92]

Answer:

4.7\mu m

Explanation:

We are given that

Potential difference=V=154 V

Surface charge density=\sigma=29nC/m^2=29\times 10^{-5} C/m^2

Using 1 nC/cm^2=10^{-5} C/m^2

We know that

C=\frac{\epsilon_0A}{d}=\frac{Q}{V}=\frac{\sigma A}{V}

d=\frac{\epsilon_0V}{\sigma}

Where

\epsilon_0=8.85\times 10^{-12}C^2/Nm^2

Using the formula

d=\frac{8.85\times 10^{-12}\times 154}{29\times 10^{-5}}

d=4.7\times 10^{-6} m=4.7\mu m

Using 1\mu m=10^{-6} m

Hence, the spacing between the plates=4.7\mu m

3 0
3 years ago
SOMEBODY PLEASE HELP!! 20 PTS!!!
aliya0001 [1]

Answer:

1. Reflection

2. travel from one medium to another

3. Same waves to travel in opposite direction.  

Explanation:

1. When a wave strikes a solid barrier, it bounces back in the same medium. This wave behavior of bouncing back is known as reflection. Its like a basketball hitting a backboard. The ball bounces back at the same angle as it was incident. ∠i = ∠r

2. For refraction to occur in a wave, the wave must travel from one medium to another. When light travels from through mediums of different optical densities, it bends. The wave bends away normal when it enters from denser medium to rarer medium. The wave bends towards the normal when it enters from rarer to denser medium. The angle of refraction and angle of incidence are related by Snell's law.

\frac{sin(i)}{sin(r)} = \frac{\mu_2}{\mu_1}

3. The formation of standing wave requires two same waves to travel in the opposite direction and interfere. The incident wave and reflected wave when interfere, form standing waves. There waves are also resonances or harmonics. A standing wave oscillates at one place and does not transfers any energy.

3 0
2 years ago
Read 2 more answers
Can anyone solve this?
love history [14]

Answer:

F = 39.2 N

Explanation:

Since, the object is in uniform motion. Therefore, the frictional force on object will be:

Frictional Force = μk N = μk mg

where,

μk = coefficient of kinetic friction = 0.2

m = mass of crate = 10 kg

g = 9.8 m/s²

Therefore,

Frictional Force = (0.2)(10 kg)(9.8 m/s²)

Frictional Force = 19.6 N

The horizontal component of force must be equal to this frictional force to continue the uniform motion:

F Sin 30° = 19.6 N

F = 19.6 N/Sin 30°

<u>F = 39.2 N</u>

3 0
2 years ago
6) Why do electromagnetic waves not require a medium for travel?
sergij07 [2.7K]
Electromagnetic waves are a type of
transverse wave. This wave does not
require media for travel. As the name
implies a wave, these waves indicate
electrical and magnetic properties. No
cost whatsoever happened to the wave. Electromagnetic waves work with the
laws of reflection and refraction. They
travel the straight line in a vacuum at a
speed of 3 x 108 ms-1. The intensity of
electromagnetic waves depends on the
strength of the electric field.
8 0
2 years ago
Which career is most concerned with the study of radioactive isotopes?
leonid [27]
<span>The career that is most concerned with the study of radioactive isotopes is chemistry. You need to have passed AP chemistry to actually deal with the isotopes. In a quick reference, isotopes are when the atom has difference amount of neutrons, making the atomic mass differ.</span>
3 0
3 years ago
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