A 12.70 g bullet has a muzzle velocity (at the moment it leaves the end of a firearm) of 430 m/s when rifle with a weight of 25.
1 answer:
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Electron, photon and proton carry momentum .
- De Broglie derived the relationship between the wavelength and momentum of matter. This relationship is known as de Broglie's relationship.
- De Broglie's relationship is given by
...(1)
- Momentum is the product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.
Equation (1) can be written as where λ is known as de Broglie wavelength and p is momentum , h = Plank’s constant
For photon , the momentum is given by ...(2) where c is the speed is the speed of light .
From equation (1) and (2) we can conclude that electron, photon and proton carry momentum .
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The speed of the dragster after travelling 325 m is still 45 m/s
Explanation:
In this problem, we are told that the dragster is travelling at constant rate, therefore its speed is constant and it is
v = 45 m/s
Therefore, its speed will remain constant during the entire motion: therefore, after having travelled for 325 m, its speed will still be 45 m/s.
We can also calculate the time taken for the dragster to cover the 325 m. In fact, the speed in a uniform motion is given by
where:
v is the speed
d is the distance covered
t is the time elapsed
In this case, we have:
v = 45 m/s
d = 325 m
Solving for t, we find:
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