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Blue light (450 nanometer) is diffracted through a double slit and the central fringe on a screen 1.2 meter away is 0.62 meter wide. Determine what is the slit spacing.
A salt shaker sits on a wheel that is turning at 20 rpm. If the wheel's diameter is 43 centimeter. Determine the acceleration of the salt shaker
A car wash requires 1200 gallons of warm water a day heated from 50 degrees F to 100 degrees F. How large a solar collector would be required to do this? The incident solar energy is 1100 Btu/ft2 each day and the collector efficiency is 50%.
A currentI flows in a semi-infinite straight wire along y= 2b, z = 0 from very large positive values of x to the point (0,2b,0), then around a semicircular wire centered upon (0,b,0) in negative values of x to the point (0,0,0), then along a second s..
A jogger accelerates from rest to 5.87 m/s in 3.53 s. A car accelerates from 21.3 to 34.7 m/s also in 3.53 s. (a) Find the magnitude of the acceleration of the jogger. (b) Find out the magnitude of the acceleration of the car. (c) How much further..
A Thermopane window of area 6.8 m2 is constructed of two layers of glass, each 5.4mm thick and separated by an air space of 2 mm. If the inside is at 12?C and the outside is at ?36?C, how much heat is lost through the window? The thermal conductivity..
A parallel beam of light containing red (660 nm) and violet (410 nm) wavelengths goes from diamond to water, striking the surface between them at a 19° incident angle
An infinite non conducting sheet has a surface charge density σ = 8.00 pC/m2. Obtain how much work is done by the electric field due to the sheet if a particle of charge q = +1.60 ×10-19 C is moved from the sheet to a point P at distance d = 3.58 cen..
a spacecraft moves past a student with a relative velocity of .90 c. how much time has elapsed according to the student's watch
the size of a pixel on an electron-multipler ccd camera is 17 microns. we want to find the position of quantum dots
Consider the collision between two hockey pucks in the figure below. They do not stick together. Their speeds before the collision are v1i = 27 m/s and v2i = 14 m/s. What is the final velocity of the other puck
suppose a star is at a distance of 20 parsec from Earth. What is its apparent magnitude m? If the star has the same luminosity as Sun, what is its absolute magnitude M?
A satellite of mass 240 kg is in a circular orbit of radius 8.68 x106 m around a planet. If the period is 9030 s, what is the mechanical energy of the satellite
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