<u>Explanation</u>:
Resistivity of silver wire =
Resistivity of copper wire =
Resistance = Resistivity *length/cross sectional area
So,
For E calculation
For copper
E = resistivity * current density
E = Resistivity * current/area
For silver
Potential difference
For silver
Potential difference =
For copper
Potential difference =
Answer:
Speed of the car around the circular path will be 12 m/sec
Explanation:
We have given mass of the car m = 1500 kg
Radius of the curve r = 45 m
Centripetal acceleration of the car
We have to find the speed of the car
We know that centripetal acceleration is given by , here v is car speed along the circular path and r is radius of the curve
So
v = 12 m/sec
So speed of the car around the circular path will be 12 m/sec
Answer:
v = 8.57 m/s
Explanation:
As we know that the wagon is pulled up by string system
So the net force on the wagon along the inclined is due to tension in the rope and component of weight along the inclined plane
So as per work energy theorem we know that
work done by tension force + work done by force of gravity = change in kinetic energy
so we have
m = 38.2 kg
d = 85.4 m
so now we have