How to calculate wavelength in m when you know the frequency?
1 answer:
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Answer:
Force, F = 124 N
Explanation:
We have,
Mass of bicycle is 12 kg and mass of rider is 50 kg
Total mass of the system is 12 kg + 50 kg = 62 kg
Acceleration of the system is 2 m/s²
It is required to find the force required to accelerate the system. The force acting on an object is given by :
So, the force of 124 N is acting on the system.
Answer:
-4892 J
Explanation:
The work done by friction is equal to the difference in mechanical energy of the car between the bottom of the loop (point A) and the top of the loop (point B).
The mechanical energy of the car at point A is
where
is the mass of the car
is the speed at point A
is the height of the car at point A (zero because it is at the bottom of the loop)
Substituting into the equation, we find
The mechanical energy of the car at point B is
where
is the mass of the car
is the speed at point B
(twice the radius) is the height of the car at point B, at the top of the loop
Substituting into the equation, we find
So, the work done by friction is
And the work is negative because it is done against the motion of the car.
Answer:True
Explanation:Because the deflection in galvanometer is calculated by the following formula;
