Answer:
1. The force applied by the shelf supporting the book.
Explanation:
The free body diagram for the book is represented as follows:
1 - The weight of the book acting downward
2 - The normal force exerted by the shelf upward on the book.
As the book remains stationary, these two forces balance each other, and in accordance with Newton's Third Law, the reactive force equivalent to gravity is opposite and equal to the weight of the book. This reaction force prevents the book from falling off the shelf.
Answer:
a
The density of volume charge is 
b
The density of surface charge is 
Explanation:
The question states that
The radius measures R
The length is L
The speed is v
The ion count per unit volume is n
The charge per ion is q
The surface thickness of the cylinder is 
The volume charge density is mathematically expressed as
The surface charge density is mathematically expressed as
substituting for 
Incomplete query. The complete inquiry is as follows
Calculate the torque exerted on the shaft of a vehicle transmitting 225 hp at a rotation speed of 3000 rpm.
Response:
Torque=0.51 Btu
Analysis:
Given Information
Power=225 hp
Revolutions =3000 rpm
To determine
T( torque )=?
Process
As an object is moved by force over a distance, work is performed on that object. Similarly, when torque rotates an object through an angle, work is also accomplished.
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Answer:
b. The loop's current consistently flows in a counterclockwise direction.
Explanation:
As a magnet descends through a wire loop, it generates an induced current within that loop. This induced current arises due to the magnet's movement, leading to a variation in magnetic flux. Lenz's law states that the induced current will act to counteract the change that produces it. In this scenario, the only feasible resistance to the magnet’s fall is through inducing a similar pole on the loop to counteract its downward motion. An induced current that circulates counterclockwise in the wire loop mimics the polarity of a northern pole, thereby repelling the magnet's descent. Furthermore, as the magnet passes the wire loop, this induced north pole will seek to attract the magnet's south end in an effort to halt its downward progression.
