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(a) A point charge Q = +4.40 µC is held fixed at the origin. A second point charge q = +2.0 µC with mass of 2.80 10-4 kg is placed on the x-axis, 0.250 m from the origin.
(b) The second point charge is released from rest. What is its speed when it is at the following distances from the origin? 1)0.500 m 2)5.00 m 3) 50.0 m
A runner rounds a circular curve of radius 24.0 m at a constant speed of 5.25 m/s. What is the magnitude of the runner's centripetal acceleration
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 2.85 multiplied by 10-4 m3, What mass of gold is contained in the rock
The index of refraction of a certain liquid is 1.6. What is the critical angle for a light ray traveling in this liquid toward a flat layer of air above it
A large log is located on the icy surface of a frozen pond; for this problem, the ice may be assumed to be a frictionless surface. find the total horizontal force acting on the log
One end of a 68-cm-long copper rod with a diameter of 2.4cm is kept at 480?C, and the other is immersed in water at 24?C. Calculate the heat conduction rate along the rod
Three boxes are being accelerated on a horizontal table with a 60-N force applied to box 1 at an angle 35o below the horizontal. What is the acceleration of the three boxes
The magnetic flux through one turn of a 52-turn coil of wire is reduced from 28.1 Wb to 4 Wb in 0.10 s. Find the total resistance of the wire
A 95 turn square wire coil of area0.040 m2 rotates about a vertical axis at 1700 rev/min, as indicated in Figure P20.30. The horizontal component of the Earth's magnetic field at the locationof the loop is 2.0 multiplied by 10-5 T. Calculate the m..
In 0.181s, through a distance of 8.05 m, a test pilot's speed decreases from 88.9m/s to 0m/s. If the pilot's mass is 70 kg, how much work is done against his body.
A boat is cruising in a straight line at a constant speed of 2.5 m/s when it is shifted to neutral. what was the boats acceleration while coasting
a hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake.
A nurse measures the temperature of a patient to be 39.3°C. What is this temperature on the Fahrenheit scale
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