Answer:
Explanation:
The frequency of an electromagnetic wave is given by the following equation:
Where:
is the speed of light in vacuum
is the frequency of red light
is the wavelength of red light
Isolating :
Finally:
When a hydrogen atom absorbed a photon and the electron is excited, why the election's kinectic energy decreases instead of incr
1 answer:
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Answer:
Force, F = 2356.19 N
Explanation:
Given that,
Diameter of the circular tip, d = 1 mm = 0.001 m
Its radius, r = 0.0005 m
Pressure created,
To find,
Force exerted on the nail.
Solution,
The pressure exerted by an object is equal to the force acting per unit area. Its formula is given by :
F = 2356.19 N
Therefore, the force exerted on the nail is 2356.19 N.
Answer:
The block will be move in to right side.
Explanation:
Given that,
Mass of block = 2 kg
First force = 3 N
Second force = 4 N
We need to calculate the acceleration
For first force,
Using newton's second law
Put the value into the formula
We need to calculate the acceleration
For second force,
So, we can say that the block will be move to right side because the acceleration is maximum in to right side.
Hence, The block will be move in to right side.