Answer: The correct option is Option b.
Explanation:
Power is defined as the rate of work done by an object.
Mathematically,
.....(1)
And work done is the product of force exerted on the object times the displacement covered by that object.
Mathematically,
Putting this value in above equation, we get:
where,
P = power = ?W
F = Force exerted = 10N
s = Displacement = 400cm = 4m (Conversion factor: 1m = 100 cm)
t = Time taken = 8s
Putting values in above equation, we get
Hence, the correct option is Option b.
We can make pretty good guesses for their masses, but kinetic energy also depends on their speeds, which we don't know, and may change.
As an example ... If the truck, the van, the car, and the bike are all parked at the mall, then a scampering mouse has more kinetic energy than all of them combined.
As the question stands, no answer is possible.
Hope this answer helps, cause Idk, I might be wrong, but I still, I used the correct formulas, so I might be correct
Answer:
The potential difference through which an electron accelerates to produce x rays is 
.
Explanation:
It is given that,
Wavelength of the x -rays, 
The energy of the x- rays is given by :
The energy of an electron in terms of potential difference is given by :
So,
V is the potential difference
e is the charge on electron
V = 12431.25 volts
or
So, the potential difference through which an electron accelerates to produce x rays is . hence, this is the required solution.
