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A particle of mass m is subject to the delta-function potential V(x) = -alpha delta(x) with alpha > 0. Evaluate the uncertainty product alpha x alpha p for the hound state.
A collie drags its bed box across a floor by applying a horizontal force of 3.1 N. find the increase in thermal energy of the bed and floor
slides 145m before coming to a halt. Illustrate what is the coefficient of friction between the skies and the snow?
A 120-V motor has mechanical power output of 3.20 hp. It is 91.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
in the diving pool in the richards building there is a glass window under the water. there is a room full of air on the
a simple pendulum is made from a 0.617 m-long string and a small ball attached to its free end. the ball is pulled to
A tether ball of mass 0.40 kg is attached to a vertical pole by a cord 1.5 m long. Assume the cord attaches to the center of the ball. The cord makes an angle of 20° with the vertical. (a) What is the tension in the cord? . N (b) What is the speed of..
two wires on a piano are the same length and are stretched to the same tension. wire 1 vibrates at a frequency 1.5
The position of an object connected to a spring varies with time according to the expression x = (4.3 cm) sin(6.9?t). Find the amplitude and frequency of the motion
An auto race is held on a circular track. A car completes onelap in a time of 21.5 seconds, with an average tangential speeed of38.1 m/s. What is the radius of the track
Two charges of equal magnitude exert an attractive force of 7.5×10-4 N on each other. If the magnitude of each charge is +2.4? C, how far apart are the charges
A 3.00kg mass and a 5.00kg mass hang vertically at opposite ends of a rope that goes over an ideal pulley. what is the magnitude of the acceleration of the masses
The two stars in a binary star system have masses 1.9 x 10^30kg and 6.1 x 10^30kg. What is the speed of the heaviest star
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