B. Velocity.
Momentum of a object = Mass * Velocity.
The momentum is a vector quantity and It has the same direction as the velocity.
Answer:
The output power is 24.68 mW.
Explanation:
Given that,
Power = 110 mW
Range = 38 m
Reduced range = 18 m
We need to calculate the power
Using formula of intensity
As intensity is constant
So,
Put the value into the formula
Hence, The output power is 24.68 mW.
Answer:
Gamma rays
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.
Explanation:
Nickel’s oxidation is +3
Oxygen is -2
Answer:
Explanation:
Since the surface is frictionless therefore there will be no friction force on block but there will be weight of block which we can divide in to two components i.e. mgcosθ &mgsinθ which is perpendicular and parallel to the surface respectively.
In response to mgcosθ ramp will apply a normal force to the block which will be of equal magnitude to that of mgcosθ.
Therefore Ramp will apply a Force of mgcosθ on block where m is the mass of block.