The law of reflection states that the angle of incidence is equal to the angle of reflection.
2 answers:
Answer:
yes, it is true.
Explanation:
When a light ray falls on a highly smooth and polished surface, it bounces back into the same medium. This phenomenon is called reflection of light.
There are two laws of reflection.
1. The angle of incidence is equal to the angle of reflection.
2. Incident ray, reflected ray and the normal all lie in the same plane.
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Answer:
The maximum displacement, the frequency, and the time required for one cycle are 1/5 inch, 1/π Hz and π sec.
Explanation:
Given that,
The equation of simple harmonic motion
.....(I)
We need to calculate the maximum amplitude
Using equation of simple harmonic motion
Where, a = amplitude
=frequency
t = time
On comparing equation (I) and general equation
The amplitude is a maximum displacement traveled by a wave.
So, the maximum displacement is
We need to calculate the frequency
We need to calculate the time required for one cycle
Hence, The maximum displacement, the frequency, and the time required for one cycle are 1/5 inch, 1/π\ Hz and π\ sec.
Power consumed by the refrigerator is given as
Now if refrigerator is used 10 h a day then total usage of refrigerator for 1 month will be given as
now the total energy consumed in one month is given as
now it is given that cost of one kWh is $0.20
then total cost of one month is given as