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A 0.5-cm-wide diffraction grating has 1315 slits. It is illuminated by light of wavelength 534 nm. What are the angles (in degrees) of the first two diffraction orders?
A closed box is filled with dry ice at a temperature of ?78.4 °C, while the outside temperature is 22.8 °C. Find the thermal conductivity of the material from which the box is made
A 80.0 Hz generator with an rms voltage of 150 V is connected in series to a 3.20 k ohm resistor, estimate the phase angle between the current and the voltage
The barrel has a length of 0.60 m and an opening whose radius is 2.8 10-3 m. A bullet (mass = 2.7 10-3 kg) has a speed of 380 m/s after passing through this barrel. Ignore friction and examine the average pressure of the expanding gas.
An elastic cord is 66 cm long when a weight of 66 N hangs from it but is 86 cm long when a weight of 76 N hangs from it. What is the "spring" constant k of the elastic cord.
What is the maximum speed with which a 1350kg car can round a turn of radius 71m on a flat road if coefficient of static friction between tires and road is 0.40.
An object of mass b has a speed that changes with distance d according to v = bx^-n. What is the force as a function of time
One particle has a mass of 4.42 x 10-3 kg and a charge of +7.35 %u03BCC. A second particle has a mass of 8.69 x 10-3 kg and the same charge. Find the initial separation between the particles
A tank holds a layer of oil, 1.65 m thick, which floats on a layer of syrup that is 0.83 m thick. Both liquids are clear and do not intermix. A ray, The index of refraction of the syrup is
A bullet with mass m = 5:21 g is moving horizontally with a speed v = 498 m/s when it strikes a block of wood with mass M = 14.8 kg (initially at rest). What was the change in kinetic energy (J) of the bullet
A laser pulse has an energy of 24 J and a beam radius of 2 mm. Find the rms values of the electric and magnetic fields in the pulse
A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of curvature of 12cm for the 1st surface, What is the focal length of this lens when used in air
There are two identical, positively charged conducting spheres fixed in space. The spheres are 45.4 cm apart, find the initial charge on each sphere
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