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A steel cable is to support an elevator whose total (loaded)mass is not to exceed 3100kg. If the maximum acceleration of theelevator is 1.2m/s^2, calculate the diameter of the cable required.Assume a safty factor of 7.0.
Three sinusoidal waves of the same frequency travel along a string in the positive direction of an x axis. find the phase constant of the resultant wave
What woud happen if a person would dropp an object from a ships mast with no wind blowing and the ship moving forward. Where will the object fall and why
q. suppose that you hear a clap of thunder 15.90 s after seeing the associated lightning stroke. the speed of sound
A block of mass m = 0.80 kg slides along a horizontal table with speed v0 = 5.50 m/s. At x = 0 it hits a spring with spring constant k = 45.00 N/m and it also begins to experience a friction force. The coefficient of friction is given by ? = 0.250. H..
A double-slit experiment uses light of wavelength 633 nm with a slit separation of 0.1 mm and a screen placed 2.0 m away. What is the linear width of the central fringe
A basketball player grabbing a rebound jumps 70.80 cm perpendicularly. How much total time (ascent and descent) does the player spend (a) in the top 11.2 cm of this jump and (b) in the bottom 11.20 cm? Do your results describe why such players see..
A film of oil lies on wet pavement. The refractive index of the oil exceeds that of the water. what is the longest visible wavelength (in vacuum) for which the film will appear bright due to constructive interference
At what angle does it leave the field region?
A loudspeaker at a rock concert generates 10-2 W/m2 at 18 m at a frequency of 1 kHz. Suppose that speaker spreads its energy uniformly in all directions. What is the intensity level at 18.00m.
A 2.0 uF capacitor is first charged by being connected across a 6.0 V battery. Find the charge on each of the capacitors
A 85-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 cm in diameter
Determine the phase and group velocities for a monatomic lattice. Plot the velocities versus the wave vector k and give a brief discussion of their significance.
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