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tigry1 [53]
3 years ago
5

The diagram below shows light interacting with an object.

Physics
2 answers:
JulsSmile [24]3 years ago
7 0

Answer:

A: a window

Explanation:

I just got it right on Edg.

Vadim26 [7]3 years ago
5 0

Answer:

The correct answer is A: a window

Explanation:

I just did the question on E d u g e n i t y.

Hope you have a great day!

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An RL circuit contains a resistor with R = 6800 Ω and an inductor with L = 2300 µH. If the impedance of this circuit is 160,000
Rainbow [258]

| Impedance | = √ [R² +(ωL)²]

R² = 6800² = 4.624 x 10⁷
 
(ωL)² = (2 · π · f · 2.3 · 10⁻³)²

          = 2.0884 x 10⁻⁴  f²

| Z | =  √[ (4.624 x 10⁷) + (2.0884 x 10⁻⁴ f²) ]  =  1.6 x 10⁵

     (1.6 x 10⁵)²  =  (4.624 x 10⁷) + (2.0884 x 10⁻⁴ f²)

     (2.56 x 10¹⁰) - (4.624 x 10⁷)  =  2.0884 x 10⁻⁴ f²


Frequency² =   (2.56 x 10¹⁰ - 4.624 x 10⁷)  /  2.0884 x 10⁻⁴

                    =       2.555 x 10¹⁰ / 2.0884 x 10⁻⁴

                    =          1.224 x 10¹⁴ 

                    =          122,400 GHz          <== my calculation

                                      11.1 MHz           <== online impedance calculator

Obviously, I must have picked up some rounding errors
in the course of my calculation. 
  











7 0
3 years ago
Suppose you were asked to demonstrate electromagnetic induction. Which of the following situations will result in an electric cu
steposvetlana [31]
D. All of the above. When a wire loop is moved or rotated in a magnetic field, there is a change in magnetic flux which produces emf in wire loop and hence electric current is produced. 
5 0
4 years ago
Read 2 more answers
What is an independent variable
Iteru [2.4K]

Answer:

An independent variable is a variable that is manipulated to determine the value of a dependent variable. The dependent variable is what is being measured in an experiment or evaluated in a mathematical equation and the independent variables are the inputs to that measurement.

Explanation:

8 0
4 years ago
Read 2 more answers
When you are standing on your toes, where do you exact the force of gravity​
zloy xaker [14]

uhhhh, I think it depends your height or weigh...?

3 0
3 years ago
Using a 2.44kg sledge hammer, a railroad worker drives a 0.55kg spike into a railroad tie. The sledge hits the spike with a spee
Mazyrski [523]

Answer:

1547.6 J

Explanation:

From the law of conservation of energy, the sum of initial and final energy is the same. Energy can only be transformed into other forms but can't be created nor lost

Initial kinetic energy of the hammer system is given by

KE_i=0.5mv^{2} where m is mass of the body and v is the velocity

Substituting m for mass of hammer which is 2.44 Kg and v for 62 m/s

KE_i=0.5*2.44 Kg*(62 m/s)^{2}=4689.68 J

Since the hammer comes to rest, the final kinetic energy is zero since it's velocity is zero

KE_f=0 J

Change in kinetic energy is given by

\triangle KE= KE_f-KE_i hence 0-4689.68  J=-4689.68  J

Change in total internal energy is given by

\triangle PE-\triangle KE and in this case the change in potential energy is zero

\triangle PE-\triangle KE=0--4689.68 J=4689.68 J

Since only 0.33 of this energy is converted hence

0.33\times4689.68 J=1547.5944 J\approx 1547.6 J

6 0
3 years ago
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