As a charged particle moves freely in a circular path in the presence of a constant magnetic field applied perpendicular to the particle's velocity, the particle’s kinetic energy
1.remains constant.
2.increases.
3.decreases.
1
You might also like to view...
Magnetic Field of a Long Wire: Three long parallel wires each carry 2.0-A currents in the same direction. The wires are oriented vertically, and they pass through three of the corners of a horizontal square of side 4.0 cm. What is the magnitude of the magnetic field at the fourth (unoccupied) corner of the square due to these wires? (?0 = 4? × 10-7 T ? m/A)
A. 1.2 µT B. 2.1 µT C. 12 µT D. 21 µT E. 0 T
Momentum of a system isn't always constant. What condition assures that momentum is conserved for a system?
What will be an ideal response?
An ideal gas is expanded isothermally from 20 L to 30 L. During this process, 6 J of energy is expended by the external mechanism that expanded the gas. Which of the following statements is correct?
A) 6 J of energy flow from surroundings into the gas. B) 6 J of energy flow from the gas into the surroundings. C) No energy flows into or from the gas since this process is isothermal. D) None of the above statements is correct.
A planar cross section through two spherical waves emanating from the sources S1 and S2 in the plane is shown in the figure. S1 and S2 are in phase. The black circles are one and two wavelengths from their respective sources. The lighter circles are one-half and one-and-a-half wavelengths distant from their respective sources. If the waves shown arriving at P1 both arrive with amplitude A, the resultant amplitude at point P1 is
?
?
A.
B.
.C.
D.
.E.