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A thin spherical shell has a radius R=3 m. A constant force F=2 N is applied to the shell, always tangential to the surface of the sphere, producing an angular speed ?=2 rad/s about an axis through the center of the shell after a time t=4 s. What is the mass of the shell?
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another, What is the speed of the second train
The one-dimensional parity operator pi is defined by pi psi (x) = psi (-x) In other words, pi changes x into –x everywhere in the function. Is pi a Hermitian operator? For what potentials V(x) is it possible to find a set of wavefunctions which are e..
Find the maximum weight of the sign of the boom has a compressional force of 120 newtons and the cable has a tensional force of 140 newtons? What is the Force of weight of the sigh
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6 kg and the sign has a mass of ms = 16.3 kg. What is the tension in the wire
A converging lens has a focal length of 25.0 cm. A ruler (30.0 cm in length) is located 50.0 cm in front of the lens and oriented at an angle of 90 degrees to the principal axis, as shown below. What are the a) location and b) height of the image?
the roller-coaster car is dragged up at the highest point where it is released passing the highest point with speed of
A 9kg block is connected by a string over a light pulley to a 5kg block that is sliding over a flat table (i.e. the 9kg is pulling the 5kg off the table). If Co-efficient of kinetic friction is 0.200, find the tension in the string.
If the bullet leaves the gun at a speed of 280 m/s, by how much will it miss the target.
A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. .m/s2 (b) If the ramp is inclined at 26.5° wit..
To empty a flooded basement, a water pump must do work (liftthe water) at a rate of 2.00 kW. If the pump is wired to a 240-Vsource and is 84% efficient, how much current does it draw
A 2.71 g sample of KCl from the chemistry stockroom is found to be radioactive, and it is decaying at a constant rate of 4490 Bq. Calculate the half-life of this nuclide
A pendulum of length 1.5 m swings back and forth in a friction free laboratory environment. The pendulum is 1.4 m above the floor at the high point of its swing and 1.3 m above the floor at the low point.
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