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A small device based on the confinement of a proton in a 1 dimensional box is found to have a ground (i.e. n = 1) level energy of 16.9 keV. Determine the width of the box.
What is magnitude of the runner total displacement
A circular coil with a radius of 20 cm and containing 60 turns is placed in a uniform magnetic field which makes an angle of 30 degrees with respect to the plane of the coil, find the magnitude and direction of the induced current in the coil
A generator produces 29 kilovolts (24,000 volts divided by 1000 = 24 kilovolts) of AC and a transformer steps this voltage up to 368 kilovolts for transmission over power lines
On an ice rink, two skaters of equal mass grab hands and spin in a mutual circle once every 2.6s. how hard are they pulling on one another
A set of 20 stairs, each of 20-cm height, is ascended by a 700 N man in a period of 1.25 s. Compute the mechanical work, power, and change in potential energy all through the ascent. I have 2800J. Where do I go from here.
An electron is accelerated from rest through a uniform electric field of 4000 V/m. How much is the change of potential energy of this electron
A loudspeaker at the origin emits a 140Hz tone on a day when the speed of sound is 340 m/s. What is the distance between these two points
The Space Shuttle travels at a speed of about 7.6 × 103 m/s. The blink of an astronaut's eye lasts about 110 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye
The wavelength of the laser beam used in a compact disc player is 649 nm. Estimate the spacing between the slits of the grating
An object starts from the origin and goes along the x-axis to x = 10 m in 2 s, stops for 5.5 s, and then travels at v = -4 m/s for 2.5 s
A 7.00 kg bowling ball moves at 2.30m/s. How fast must a 2.60g Ping-Pong ball move so that the two balls have the same kinetic energy.
A high fountain of water is in the center of a circular pool of water. You walk the circumference of the pool and measure it to be 150 meters. How high is the fountain
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