If a roller coaster cart needs more Kinetic Energy to reach the top of the track, what are two ways to increase the amount of Ki
1 answer:
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Answer:
20 V
Explanation:
Power is 100 J/s or 100 W.
We know that P = IV = .
Isolate the potential difference. V = =
= 20 V
According to the statements the number of electrons is 150, then
e = 150
But there is a positive charge of +22e, then the number of protons would be
p = 150+172
If the mass of the electrons is
And the mass of the protong is
We have that the total mass of the system would be
Answer:
0.54454
104.00902 N
Explanation:
m = Mass of wheel = 100 kg
r = Radius = 0.52 m
t = Time taken = 6 seconds
= Final angular velocity
= Initial angular velocity
= Angular acceleration
Mass of inertia is given by
Angular acceleration is given by
Equation of rotational motion
The coefficient of friction is 0.54454
At r = 0.25 m
The force needed to stop the wheel is 104.00902 N