The wavelength of a moving particle is equal to divided by._____ .____
2 answers:
Answer: The correct answer is "mass and velocity".
Explanation:
The expression for De broglie wavelength is as follows;
Here, is the wavelength of the wave, h is Planck's constant, m is the mass and v is the velocity.
The wavelength of the wave is inversely proportional to the mass and velocity of the particle.
Or the wavelength of the wave is inversely proportional to the momentum of the particle.
Lighter the mass of the particle,longer wavelength will be exhibited by the particle. Heavier the particle, shorter wavelength will be exhibited by the particle.
Therefore, the wavelength of a moving particle is equal to divided by mass and velocity.
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Answer:
The angular velocity is 15.37 rad/s
Solution:
As per the question:
Horizontal distance, x = 30.1 m
Distance of the ball from the rotation axis is its radius, R = 1.15 m
Now,
To calculate the angular velocity:
Linear velocity, v =
v =
v =
v =
Now,
The angular velocity can be calculated as:
Thus
As we know that block of steel is continue to be in moving state
so here the friction must be kinetic friction between two surface
so we know that formula of kinetic friction must be
now we have
now from the above equation we have
So here we need atleast 14.25 N force to continue sliding the box now as per given options all forces which are less than 14.25 N is not correct
Hence correct answer must be 18.0 N
<u>D) 18.0 N</u>