To solve the problem, we need to determine which category best describes activities like brisk walking, running, bicycling, and jumping.
1. Analyzing Each Activity:
- Brisk WalkingRunning - Bicycling - Jumping
These activities are not short bursts (so not speed), nor do they focus on lifting or resistance (so not strength), and while coordination might be involved, it’s not the primary skill being developed. The key component here is the body’s capacity to continue performing for extended durations without fatigue.
3. Definition of Endurance Activities:
Endurance activities are physical exercises that increase heart rate and breathing for an extended time, improving cardiovascular and respiratory efficiency.
Final Answer:
(C) Endurance activities
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 \( A \mathbf{X} = B \).