In your cellar there are three light switches in the OFF position. Each switch controls 1 of 3 light bulbs on the floor above. Y
2 answers:
You might be interested in
Complete Question
The complete question is shown on the first uploaded image
Answer:
The work done by the spring is =
Explanation:
Force = torque × length
Given
F = 9.13 N
length (L) = 5.91 cm = 0.0591 m [Note 1 m = 100 cm ]
considering the formula above
where k denotes torque
Energy Stored
Let's solve ~
Given terms :
- Mass (m) = 7 kg
- velocity (v)= 4 m/s
The formula to find kinetic Energy is ~
Now, apply the formula according to given situation
Therefore, the kinetic Energy of the car is 56 joules
The electrical force acting on a charge q immersed in an electric field is equal to
where
q is the charge
E is the strength of the electric field
In our problem, the charge is q=2 C, and the force experienced by it is
F=60 N
so we can re-arrange the previous formula to find the intensity of the electric field at the point where the charge is located:
where
q is the charge
E is the strength of the electric field
In our problem, the charge is q=2 C, and the force experienced by it is
F=60 N
so we can re-arrange the previous formula to find the intensity of the electric field at the point where the charge is located: