Answer:
480J
Explanation:
Using the formula:
Delta U = Q - W
Q:Heat (J)
Delta U: Changes in internal Energy (J)
W:Work (J)
We can plug in the give numbers, Q and W.
Delta U = 658J - 178J = 480J
Answer:
The peak emf of the generator is 40.94 V.
Explanation:
Given that,
Number of turns in primary coil= 11
Number of turns in secondary coil= 18
Peak voltage = 67 V
We nee to calculate the peak emf
Using relation of number of turns and emf
![\dfrac{N_{1}}{N_{2}}=\dfrac{E_{1}}{E_{2}}](https://tex.z-dn.net/?f=%5Cdfrac%7BN_%7B1%7D%7D%7BN_%7B2%7D%7D%3D%5Cdfrac%7BE_%7B1%7D%7D%7BE_%7B2%7D%7D)
![E_{1}=\dfrac{N_{1}}{N_{2}}\times E_{2}](https://tex.z-dn.net/?f=E_%7B1%7D%3D%5Cdfrac%7BN_%7B1%7D%7D%7BN_%7B2%7D%7D%5Ctimes%20E_%7B2%7D)
Where, N₁ = Number of turns in primary coil
N₂ = Number of turns in secondary coil
E₂ = emf across secondary coil
Put the value into the formula
![E_{1}=\dfrac{11}{18}\times67](https://tex.z-dn.net/?f=E_%7B1%7D%3D%5Cdfrac%7B11%7D%7B18%7D%5Ctimes67)
![E_{1}=40.94\ V](https://tex.z-dn.net/?f=E_%7B1%7D%3D40.94%5C%20V)
Hence, The peak emf of the generator is 40.94 V.
Answer:
![a_E=\dfrac{Gm}{r^2}](https://tex.z-dn.net/?f=a_E%3D%5Cdfrac%7BGm%7D%7Br%5E2%7D)
Explanation:
= Mass of the Earth = 5.972 × 10²⁴ kg
G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²
r = Radius of Earth = 6371000 m
m = Mass of person
The force on the person will balance the gravitational force
![M_Ea_E=\dfrac{GmM_E}{r^2}\\\Rightarrow a_E=\dfrac{Gm}{r^2}](https://tex.z-dn.net/?f=M_Ea_E%3D%5Cdfrac%7BGmM_E%7D%7Br%5E2%7D%5C%5C%5CRightarrow%20a_E%3D%5Cdfrac%7BGm%7D%7Br%5E2%7D)
The acceleration that the Earth will feel is ![a_E=\dfrac{Gm}{r^2}](https://tex.z-dn.net/?f=a_E%3D%5Cdfrac%7BGm%7D%7Br%5E2%7D)
Answer:
Hi myself Shrushtee.
Explanation:
The fuse is connected to the live wire so that the appliance will not become charged (have a potential difference of 230 V) after the fuse has melted due to excessive current. Fuses must be fitted onto the live wire so that when it blows, it will disconnect (isolate) the appliance from the high voltage live wire.
Answer:
Power is the rate which work is done.
Explanation:
<em>Power</em> is the rate which work is done. Power is measured in watts.
<em>Work</em> is the use of force to move an object. Work is measured in joules