The vibrating system with the greatest frequency has the
A) shortest period.
B) longest period.
C) both of these
D) none of the above
Answer: A
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Suppose that a symmetry argument of some kind tells us that the electric field in a certain region points in the +y direction and has a magnitude that depends only on y. For which of the following gaussian surfaces would it be easiest to calculate the net flux of the electric field?
A. A cubical surface oriented so that two opposite faces are perpendicular to the y axis. B. A spherical surface. C. A cylindrical can-like surface oriented with its central axis perpendicular to the y axis. D. A cylindrical can-like surface oriented with its central axis parallel to the y axis. E. A cone-like surface oriented with its central axis parallel to the y axis.
Lisa throws a stone horizontally from the roof edge of a 50. meter high dormitory. It hits the ground at a point 60. m from the building. Find the time of flight
What will be an ideal response?
Consider a motorcycle of mass 150. kg, one wheel of which has a mass of 10. kg and a radius of 30. cm
What is the ratio of the rotational kinetic energy of the wheels to the total translational kinetic energy of the bike? Assume the wheels are uniform disks.
A microscope has an objective lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective
How far apart are the lenses? A) 20 mm B) 21 mm C) 23 mm D) 33 mm E) 41 mm