A coil is wrapped with 300 turns of wire on the perimeter of a square frame (side length = 20 cm). Each turn has the same area as the frame, and the total resistance of the coil is 1.5 ?. A uniform magnetic field perpendicular to the plane of the coil changes in magnitude at a constant rate from 0.50 T to 0.90 T in 2.0 s. What is the magnitude of the induced emf in the coil while the field is
changing?
a. 2.4 V
b. 1.6 V
c. 3.2 V
d. 4.0 V
e. 8.4 V
a
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A muon is an unstable particle that has an average lifetime of 1.52 × 10-6 s
This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the muon. An "average" muon is observed by a scientist on Earth to travel 342 m in its lifetime. What is the speed of the muon relative to Earth? A) 0.821c B) 0.681c C) 0.601c D) 0.551c E) 0.335c
1.65 billion is the same as
a. 1.65 × 10^12. b. 1.65 × 10^9. c. 1.65 × 10^6. d. 1.65 × 10^5. e. 1.65 × 10^3.
we consider the system to be the ball and the earth?
A. The ball’s gravitational interaction with the earth B. The ball’s contact interaction with the string C. Both interactions D. Neither interaction
What are the three sources of heat acted together to bring young Earth to its melting point
What will be an ideal response?