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A 3.2cm wide diffraction grating has 1700 slits. It is illuminated by light of wavelength 520nm. What is the angle (in degrees) of the first diffraction order? What is the angle (in degrees) of the second diffraction order?
An isolated conductor of arbitrary shape has a net charge of +1.2 10-5 C. What is the charge on the cavity wall
The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. What is the current coming from the wall socket
Heat is another word for thermal energy. Dissimilar materials at the same temperature can contain different amounts of heat.
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. How long after being released does the stone strike the beach below the cliff
A 5.00-N salmon swims 20.0m upstream against a current thatprovides a resistance of 1.50N. What is the total work that mustbe done by the salmon
If the spring is pulled until it stretches 2.40cm and the pack remains at rest, what is the force of friction exerted on the backpack by the table
Liquid-detecting prism devices may be used in a washing machine or other liquid-containing devices. If no liquid covers the prism's hypotenuse, total internal refletion from the light source produces a large signal in the light sensor.
A 5.0 multiplied by 102-newton girl takes 10. seconds to run up two flights of stairs to the landing, a total of 5.0 meters vertically above her starting point. What power does the girl develop during her run.
A wooden shelter has walls constructed of wooden planks 1.00 cm thick. find the rate of energy loss through a wall that has dimensions 1.85 m by 2.10 m
A parallel-plate air capacitor of area A= 19.0 cm2 and plate separation d= 2.80 mm is charged by a battery to a voltage 58.0 V. how much additional charge will flow from the battery onto the positive plate
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. at what angle to the horizontal should he jump
A concave mirror (R = 56.0 cm) is used to project atransparent slide onto a wall. The slide is located at a distanceof 40.0 cm from the mirror, and a smallflashlight shines light through the slide and onto the mirror. Thesetup is similar to that i..
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