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jenyasd209 [6]
3 years ago
8

Which of these surfaces gives unpolarized reflected light?

Physics
2 answers:
barxatty [35]3 years ago
5 0

Answer:

Metal

Explanation:

Light is basically an electromagnetic wave having both electric and magnetic component. This contains electric charges. While traveling, EM wave vibrates in multiple planes. This light is unpolarized light. The process of limiting the vibrations to a single plane is called as polarization.

This can be achieved through non metallic reflection (Snow and Glass), refraction (Water), scattering, and Polaroid filters. A metallic reflection will not result in polarization.

scoray [572]3 years ago
4 0

The answer is Metal I'm 100% positive

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An LR circuit contains an ideal 60-V battery, a 42-H inductor having no resistance, a 24-ΩΩ resistor, and a switch S, all in ser
s2008m [1.1K]

Answer:

1.6 s

Explanation:

To find the time in which the potential difference of the inductor reaches 24V you use the following formula:

V_L=V_oe^{-\frac{Rt}{L}}

V_o: initial voltage = 60V

R: resistance = 24-Ω

L: inductance = 42H

V_L: final voltage = 24 V

You first use properties of the logarithms to get time t, next, replace the values of the parameter:

\frac{V_L}{V_o}=e^{-\frac{Rt}{L}}\\\\ln(\frac{V_L}{V_o})=-\frac{Rt}{L}\\\\t=-\frac{L}{R}ln(\frac{V_L}{V_o})\\\\t=-\frac{42H}{24\Omega}ln(\frac{24V}{60V})=1.6s

hence, after 1.6s the inductor will have a potential difference of 24V

3 0
3 years ago
What is current of 12 ohm? help me pleasee​
worty [1.4K]
1 Ampere

Explanation:

1/R = 1/8 + 1/10 + 1/12
1/R = (30 + 24 + 20) / 240
1/R = 74 / 240
R = 240 / 37
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We know that,
V = IR
I = V/R
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I = 12 × 37/120
I = 37/10
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Now,
The current in 12 ohm resistor →
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3 0
1 year ago
A car takes 10 s to go from vi=0 m/s to vf=25 m/s. How far does the car travel in<br> that time?
SSSSS [86.1K]

Answer:

2.5 k

Explanation:

8 0
3 years ago
In this lab, you will observe that the voltage measured across a battery connected in a circuit with current flowing is lower th
jarptica [38.1K]

Answer:

because all power is being stored in the battery instead of draining the battery getting a result of a smaller and smaller voltage put through the circuit  

Explanation:

say the battery  is 1.5 volts, in a circuit it is slowly decreasing the power output of 1.5 volts to 0 volts by using the power within the battery when you have the  battery disconnected  the voltage will remain the same as which you left it

3 0
2 years ago
If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg. m/s, what is the mass of the tennis ball in grams?
Lelu [443]

Answer:

The mass of a tennis ball is 59 grams.

Explanation:

Given that the formula for momentum is p = m×v where m represents mass (kg) and v is speed (m/s). Then, you have to substitute the values :

p = m \times v

let \: p = 1.06,v = 18

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1.06 \div 18 = m

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m = 0.0589kg \times 1000

m = 59g \: (3sf)

5 0
3 years ago
Read 2 more answers
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