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An electron moving in one dimension is confined between two walls seperated by a distance L = 10^-10 m. Suppose the lectron is in the ground state. What is the average force that the electron exerts on the walls?
A 65 kg crate slides on a rough plane inclined upward at an angle of 28 degrees, what is the magnitude of the sliding friction force on the box, what is the coefficient of kinetic friction between teh box and the incline
A 9.4 cm diameter loop of wire is initially oriented perpendicular to a 2.3 T magnetic field. determine the average induced emf in the loop
The circular top of a can of soda has a radius of 0.029m. The pull-tab has an area of 4.13 10-4m2. The absolute pressure of the carbon dioxide in the can is 1.4 x10^5Pa. Find out the force that this gas generates.
A positron (q = +e) moves at 3.2 multiply.gif 107 m/s in a magnetic field of magnitude 0.46 T. What is the angle between the velocity and the field
A 995 kg HOLLOW SPHERE has a radius of 4.4 m and is in equilibrium. Determine the net force & net torque acting on the HOLLOW SPHERE
Two equally charged, 1.00 {rm g} spheres are placed with 2.00 {rm cm} between their centers. When released, each begins to accelerate at 225 {rm m/s^2}. What is the magnitude of the charge on each sphere.
A certain metal with atomic mass 2.6 × 10?25 kg has an interatomic bond with length 2.5 × 10?10 m and stiffness 45 N/m. What is the speed of sound in a rod made of this metal
A gyroscope flywheel of radius 2.83 cm is accelerated from rest at 14.8 rad/s2 until its angular speed is 2760 rev/min. What is the radial acceleration of this point when the flywheel is spinning at full speed
We place a 1 mole sample of an ideal monatomic gas in a cylinder with a piston and we heat the gas so it expands and performs work against the piston, How much heat does the gas absorb during the process
A charged particle of mass m and charge q is suspended from a light thread in a region of space where there is a uniform horizontal electric field. find the angle between the thread and a vertical line
A very long solenoid of circular cross section with radius r= 5.4cm has n= 86.0 turns/cm of wire. An electron is sitting outside the solenoid, at a distance r= 5.90 cm from the solenoid axis. What is the magnitude of the force on the electron whil..
A 5.0-kg mass attached to a spring is displaced 8.0 cm from equilibrium position. What is the frequency of the oscillation
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