Two cars move down a hill at a constant velocity. Car c is much larger than car d. The car that has a greater momentum is:
2 answers:
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Answer:
Frequency,
Explanation:
Visible red light has a wavelength of 680 nanometers (6.8 x 10⁻⁷ m). The speed of light is 3.0 x 10 ⁸ m / s. What is the frequency of visible red light?
It is given that,
Wavelength of a visible red light is,
Speed of light is,
We need to find the frequency of visible red light. It can be calculated using below relation.
So, the frequency of visible red light is .
Answer:
(A) 140 j/sec (b) 1.26 K
Explanation:
We have given the heat heat flowing into the refrigerator = 40 J/sec
Work done = 40 W
(a) So the heat discharged from the refrigerator
(b) Total heat absorbed =140 j/sec
Let the temperature be
Heat absorbed per hour =504000
So
Answer:
The smallest diameter is
Explanation:
From the question we are told that
The resolution of the telescope is
The wavelength is
From the question we are told that
So
Therefore
Now
So
=>
The smallest diameter is mathematically represented as
substituting values