I agree with the first responses
Answer:
a) Current = 11 mA
b) Energy = 66 mJ
c) Power = 101.54 W
Explanation:
a) Voltage, V = IR
Voltage, V = 6 V, Resistance, R = 550 Ω
Current, I 
b) Energy = Current x Voltage = 6 x 0.011 = 0.066 J = 66 mJ
c)
Answer:
The correct answer option is energy but not matter.
Complete Question
The image for this question is shown on the first uploaded image
Answer:

Explanation:
From the question we are told that
The mass of the collar is
The original length is 
The spring constant is 
Generally the extension of the spring is mathematically evaluated as

Now with Pythagoras theorem we can obtain the length from A to B as


The extension of the spring at B is

According to the law of energy conservation
The energy stored in the spring at point A + the kinetic energy of the spring = The energy stored on the spring at B
So

substituting values

=> 