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A student will study german at last 3 years
1 answer:
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Answer:
The value is
Explanation:
From the question we are told that
The length of the crack is
The frequency is
The distance outside the cave that is being consider is
The speed of sound is
Generally the wavelength of the wave is mathematically represented as
=>
=>
Generally for a single slit the path difference between the interference patterns of the sound wave and the center is mathematically represented as
=>
=>
Generally the width of the sound beam is mathematically represented as
=>
=>
Answer:
1. False
2. True
3. True
Explanation:
1- False —> The relation between electric potential and electric field is given such that
Therefore, for a uniform E field, electric potential is linearly proportional to the distance.
2- True —> The electric field lines always cross the equipotential lines perpendicularly.
3- True —> In order to be a potential difference, one source of electric field is enough. The electric potential will decrease radially according to the following formula:
There is no test charge in the formula, only the source charge. Even when there is no test charge, the potential difference between points in space can exist.