To solve the problem, we need to understand what principle of physics is demonstrated by the statement: "The golf ball remains at rest until it is struck by a golf club."
Explanation:
This statement reflects the concept of inertia, which is a fundamental part of Newton's First Law of Motion.
Newton’s First Law of Motion (Law of Inertia):
A body at rest will remain at rest, and a body in motion will remain in uniform motion in a straight line, unless acted upon by an external force.
In this case, the golf ball remains stationary (at rest) until an external force—the swing of the golf club—is applied to it.
Final Answer:
The statement indicates Newton’s First Law of Motion (Law of Inertia).
A current-carrying coil is placed in an external uniform magnetic field. The coil is free to turn in the magnetic field. What is the net force acting on the coil? Obtain the orientation of the coil in stable equilibrium. Show that in this orientation the flux of the total field (field produced by the loop + external field) through the coil is maximum.
Three students, Neha, Rani, and Sam go to a market to purchase stationery items. Neha buys 4 pens, 3 notepads, and 2 erasers and pays ₹ 60. Rani buys 2 pens, 4 notepads, and 6 erasers for ₹ 90. Sam pays ₹ 70 for 6 pens, 2 notepads, and 3 erasers.
Based upon the above information, answer the following questions:
(i) Form the equations required to solve the problem of finding the price of each item, and express it in the matrix form \( A \mathbf{X} = B \).