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A liquid is dripped onto and spreads across a water surface until the liquid layer is one molecule thick. The index of refraction of the liquid is 1.25 and that of the water 1.333. A student shines ultraviolet light on the liquid layer and decides that the reflected light is a minimum when the wavelength of the light is 100nm. Decide the molecule thickness
What is the direction of the force that the unknown charge exerts on the charge of magnitude 0.580uC?
A semicircle of radius a is in the first and second quadrants, What is the direction of the net electric field at the origin produced by this distribution of charge (+x,-x,+y,-y direction)
The space shuttle is in a 250 km high circular orbit. it needs to reach 610 km high circular orbit to catch the hubble space telesope for repairs. how much energy is required to boost it to the new orbit
A large solar panel on a spacecraft in Earth orbit produces 2.2{\rm kW} of power when the panel is turned toward the sun. What power would the solar cell produce
when the sun is directly overhead a hawk dives toward the ground with a constant velocity of 5.10 ms at 67.0deg below
A compound microscope has an objective lens of focal length 15.0 mm and an eyepiece that gives an angular magnification of 5.00 for a final image at infinity, What is the total magnification of the microscope
You have a wire of length L = 2.1 m for making a square coil of a dc motor, Find the maximum torque exerted on the coil when the wire is used to make a single-turn square coil
a man stands on the roof of a 13.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of
In a certain solar house, energy from the Sun is stored in barrels filled with water. In a particular winter stretch of five cloudy days, 1.37 x 106 kcal is needed to maintain the inside of the house at 22.4oC. what volume of water is required
An electric oscillator is made with a 2.8 micro F capacitor and a 7.2 mH inductor. The capacitor is initially charged up with a 6.0 V battery. What is the frequency at which it oscillates
A spacecraft approaching the earth launches an exploration vehicle. What is the speed of the exploration vehicle relative to the spaceship
A wheel starts at rest and takes 3.00 s to rotate 37.0 revolutions at which points its angular velocity is 98.0 rad/sec. What is the constant angular acceleration of the wheel
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