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A charge of -5.9 micro-Coulombs is placed at x = 0, y = 0. A charge of -17.9 micro-Coulombs is placed at x = 0, y = +36 cm. Another charge of -14.6 micro-Coulombs is placed at x = +16 cm, y = 0 cm. What is the angle the total electric force on the charge at x = +16 cm, y = 0 cm makes when measured from the positive x direction, counter-clockwise? Answer in degrees.
When UV light of wavelength 245nm falls on a metal surface, What is the work function of the metal
X rays with a wavelength of 0.24nm undergo first-order diffraction from a crystal at a 53%u2218 angle of incidence. At what angle does first-order diffraction occur
Four identical charges (+1.6 μC each) are brought from infinity and fixed to a straight line. Each charge is 0.32 m from the next. Determine the electric potential energy of this group.
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 32 degrees from the vertical. At what angle above the horizon does the friend see the sun
the drive train of a bicycle that has wheels 67.3 cm in diameter and pedal cranks 17.5 cm long. Calculate the speed of the bicycle relative to the road
A torsion pendulum is made from a disk of mass m = 5.7 kg and radius R = 0.67 m, What is the torsion constant of this pendulum
A billiard ball moving at 5 m/s strikes a stationary ball of the same mass. After the collision, find the struck ball's velocity (magnitude and direction) after the collision
During the takeoff of an airplane, a passenger removes his tie and lets it hang loosely from his fingers. What is the speed of the plane at takeoff
a train consists of 50 cars each of which has a mass of 7.2times 103kg. the train has an acceleration of7.9 times
A wheel of radius 2m (I=MR^2) has a rotational kinetic energy of 4800 J when rotating at 20 rev/s. What is the final angular speed of the system
A 5-nC charge is located at x = 5 cm and a charge of -6nC is located at x = -4 cm. Find the monopole moments
Bacteria vary somewhat in size, but a diameter of 2.0 nanometers is not unusual. What would be (a) volume (in cubic centimeters) and (b) surface area (in square millimeters) of such a bacterium, assuming that it is spherical.
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