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A 885 g block oscillates on the end of a spring whose force constant is k = 56 N/m. The mass moves in a fluid which offers a resistive force F = -bv, where b = 0.162 N·s/m. (a) What is the period of the motion? s (b) What is the fractional decrease in amplitude per cycle? (c) Write the displacement as a function of time if at t = 0, x = 0, and at t = 1.00 s, x = 0.120 m.
An alpha particle collides with an oxygen nucleus, initially at rest. What is the final speed of the alpha particle
Consider a 4.7mm-diameter wire made from copper (mass density of 8.9 g/cc). THe wire is carrying a current of 8milliamp. What is the average drift speed
A 10 kg picture is held in place by two wires, the first hanging at 35 degrees to left of vertical and second at 45 degrees to right of vertical
A boy is attempting to swim directly across a river; he is able to swim at a speed of 0.421 m/s relative to the water. The river is 2.48 m wide and the boy ends up at 4.77 m downstream from his starting point.
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and kno..
a search light requires 56 watts of power when connected to 117 volts. What is the resistance of the searchlight
Two different wavelengths of light are incident on a diffraction grating. One wavelength is513nm and the other is unknown. If the3rdorder of the unknown wavelength appears at the same position as the2ndorder of the 513 nm light, what is the value of ..
Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
A 6,000 lb car is traveling SW at 40 mph. it is hit by another car that weighs 7,000 lb and is traveling NNE at 50 mph. What is the speed and direction of the cars immediately after the collision
Four identical particles each have charge q and mass m. They are free from rest at the vertices of a square of side L. How fast is each charge moving when their distance from center of the square doubles.
A conducting rod AB sliding with constant speed v=2m/s on conducting rails in a uniform magnetic field with B= 0.15T. What is the current in the rod
A particular heat engine has a useful power output of 4.80 kW and an efficiency of 25.0%. Find the energy taken in during each cycle
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