1. false 2. false 3. true 4. not sure 5. b 6. b or d 7. not sure 8.not sure 9. not sure 10. c
lol sorry if i’m wrong on any i’m just using common sense
Answer:
116
Explanation:
The transformer equation states that:
where
Vp is the voltage in the primary coil
Vs is the voltage in the secondary coil
Np is the number of turns in the primary coil
Ns is the number of turns in the secondary coil
Here we have:
Vp = 5670 V
Np = 2750
Vs = 240 V
So we can solve the formula to find Ns:
So, the secondary coil has 116 turns.
Answer:
Explanation:
Let assume that gases inside bulbs behave as an ideal gas and have the same temperature. Then, conditions of gases before and after valve opened are now modelled:
Bulb A (2 L, 2 atm) - Before opening:
Bulb B (3 L, 4 atm) - Before opening:
Bulbs A & B (5 L) - After opening:
After some algebraic manipulation, a formula for final pressure is derived:
And final pressure is obtained:
Explanation:
Natural length of a spring is . The spring is streched by . The resultant energy of the spring is .
The potential energy of an ideal spring with spring constant and elongation is given by .
So, in the current problem, the natural length of the spring is not required to find the spring constant .
∴ The spring constant of the spring =
Answer:
I believe it is 1/6 M
Explanation:
sorry if i am not right but i think i am