On a speed-versus-time graph, a straight line that slopes down toward
the right shows that the object is experiencing a constant deceleration.
Elliptical, as shown by most projections
<h2>
Energy used by heater is 8.21 x 10⁶ J</h2>
Explanation:
Energy = Power x Time
Power = Voltage x Current
Voltage = 120 V
Current = 9.5 A
Power = Voltage x Current
Power = 120 x 9.5 = 1140 W
Time = 2 hours = 2 x 60 x 60 = 7200 s
Energy = Power x Time
Energy = 1140 x 7200
Energy = 8208000 J
Energy used by heater is 8.21 x 10⁶ J
Answer:
The strength of the magnetic field is 0.0842 mT
Explanation:
Given:
Velocity of rod

Length of rod
m
Induced emf across the rod
V
According to the faraday's law
We have a special case for moving rod in magnetic field.
Induced emf in moving rod is given by,

Where
strength of magnetic field


T
mT
Therefore, the strength of the magnetic field is 0.0842 mT