Answer:
A fan pushes hot air out of a vent and into a room. The hot air displaces cold air in the room, causing the cold air to move closer to the floor.
The hot air displacing the cold air is an example of transfer by
Explanation:
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Answer:
Part a)

Part b)

Explanation:
Magnetic field due to outer solenoid inside it is given as



Now similarly we have
magnetic field due to inner solenoid on it axis is given as



Part a)
Now if a proton is revolving around the common axis of two solenoids
then we will have



Part b)
Now proton is revolving in the field of outer cylinder only
so again we have



Answer:
A) 1×10^6N/C
B) 2×10^-13N
C) 1×10^-2v
Explanation:
For parallel plates,the electric field E is given by:
E=s/eo
Where s= surface charge density
E = 10^-5/8.85×10^-12
E= 1.13×10^6 approximately 1×10^6NC^-2
B) Na has a charge of 1.6×10^-19
F= q×E= (1.13×10^6) × (1.6×10^-19)
F= 1.8×10^-13 approximately 2×10^-13N
C) Potential difference ,V= E×d
d=10nm=10^-8
V= 1.13×10^6 ×10^-8
V = 1.13×10^-2 approximately 1x10^-2v
In this particular case, where car is movig through curvature, so it is moving in circular motion, force acting on car is centripetal force which holds car not to fly out. Centripetal force is always ponted in the middle of circle. Here frictional force has role of centripetal force. If frictional force is to weak, car would fly out of curvutare.
Answer:
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Explanation: