Red is the lowest because it has the shortest wavelengths
Answer:
n = 756.25 giga electrons
Explanation:
It is given that,
If the charge on the negative plate of the capacitor,
Let n is the number of excess electrons are on that plate. Using the quantization of charges, the total charge on the negative plate is given by :
e is the charge on electron
or
n = 756.25 giga electrons
So, there are 756.25 giga electrons are on the plate. Hence, this is the required solution.
Answer:
F = −10093.41 N
Explanation:
Given that,
Mass of a baseball, m = 143 g = 0.143 kg
Initial speed of the baseball, u = +38.8 m/s
The hitter's bat is in contact with the ball for 1.20 ms and then travels straight back to the pitcher's mound at a speed of 45.9 m/s, v = -45.9 m/s
We need to find the average force exerted on the ball by the bat. So, Force is given by :
a is acceleration
So, the average force exerted on the ball by the bat has a magnitude of 10093.41 N.
The answer is D since to calculate acceleration is used the formula a = delta v over delta t where delta v is the final velocity 11m/s less initial velocity 0m/s so delta v is 11m/s and delta t is final velocity 10s less initial velocity that always will be 0 then 10 - 0 = 10 so a = 11 over 10 that is 1.1m/s^2 (remember that is squared)