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Two pieces of optically flat glass (n = 1.50) touch at one edge and a separated by a thin stretched fiber at the opposite edge. Light of wavelength 500 nm is shone from above and 100 dark fringes are counted. How thick is the fiber?
You are 1.9 m tall and stand 3.4 m from a plane mirror that extends vertically upward from the floor. What is the minimum height the mirror must have
An air-filled parallel-plate capacitor has plates of area 5.00 cm2 separated by 1.20 mm. What is the magnitude of the uniform electric field between the plates
A car of mass = 1200 traveling at 65 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if = 20 (assuming the car continues in unifo..
On a hot summer day (30 degrees Celsius), a pesky little mosquito produced its warning sound near your ear. What is the frequency in Hertz of the sound wave
At its highest temperature, a space heater has a resistance of 35.5 Ω when it is plugged into a wall outlet supplying a peak voltage of 162.6 V sinusoidally at 60 Hz
The diameter of a sphere is measured to be 6.94 in. Find the radius of the sphere in centimeters
You drop a stone down a well that's 9.5m deep. How long until you hear the splash? Assume the speed of sound in air is 343m/s
Suppose a ski-jumper lands at a point 63 m down an incline of 35 degrees, What was her speed at take-off
A uniform 1.9-kg rod that is 0.97 m long is suspended at rest from the ceiling by two springs, one at each end. Find the angle that the rod makes with the horizontal
An electric field E with an average magnitude of about 150 N/C points downward in the atmosphere near Earth's surface. What charge (both sign and magnitude) must be used
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with the same mass as that of the Earth
Small steel ball bearing with a mass of 17 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39m. Calculate the horizontal distance ball would travel if the same spring we..
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