Answer:
Explanation:
The friction force acting on the body depends on the mass of the body, here the mas of truck is very large as compared to the car, so the friction force acting on the truck is large then the car. So, the amount of heat generated by the truck is more than the car and the truck overheated more.
Answer:
ΔL = 0.429 m
Explanation:
The expression for linear thermal expansion is
ΔL = α L₀ ΔT
the coefficient of linear expansion of steel is 11 10⁻⁶ ºC⁻¹
the initial length of the bridge is L₀ = 1.30 10³ m and the temperature variation is ΔT = 30 ºC
calculate
ΔL = 11 10⁻⁶ 1.30 10³ 30
ΔL = 4.29 10⁻¹ m
ΔL = 0.429 m
To find or discover by investigation?
Yes but pleas be more specific
Answer:
The induced current is 
Explanation:
From the question we are told that
The number of turns is
The cross-sectional area is 
The initial magnetic field is 
The magnetic field at time = 1.02 s is 
The resistance is 
The induced emf is mathematically represented as

The negative sign tells us that the induced emf is moving opposite to the change in magnetic flux
Here
is the change in magnetic flux which is mathematically represented as

Where dB is the change in magnetic field which is mathematically represented as

substituting values


Thus


So


The induced current i mathematically represented as

substituting values

