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1. What is the avg total energy density in the wave given: Freq=6.15E14 hz travelling in a vacuum (c=3.0x10^8) the wave strikes a 9cm^2 surface oriented perpindicular to the wave deositing 1.35 mW of average power. The wavelength of the wave is 88 nm
2. Unpolarized light passes through two polarizers. The inensity of light coming out from the second polarizer is S2=33% of the intensity of te unpolarized light S0. What is the angle between the transmission axes of the polarizers.
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 3.83 ?C/m and are 5.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane con..
A 5.0×10?2 kg arrow hits the target at 25 m/s and penetrates 3.8cm before stopping. What average force did the target exert on the arrow
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. determine the speed of the lighter box
A sample of CO2 has a mass of 50 g. What is the number of molecules of carbon dioxide in the 50 g sample
If Argentinosaurus, a long-necked, gigantic sauropod, had a head height of 19 m and a heart height of 9.1 m, What was the blood pressure (in torr or mm Hg) at the feet
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 53° above the horizontal. how far is this point horizontally from the end of the ramp
A hollow, spherical shell with mass 1.90kg rolls without slipping down a slope angled at 40.0 degree. Part A Find the acceleration. Take the free fall acceleration to be g = 9.80m/s^2 Part B Find the friction force. Take the free fall acceleration to..
An electric vehicle starts from rest and accelerates at a rate of 2.8 m/s2 in a straight line until it reaches a speed of 18 m/s. How far does the vehicle travel from start to stop
An astronaut weighs 185 lb on earth. What is her weight on the moon, where the acceleration due to gravity is 5.28 ft/s2
A coil has an inductance of 0.05 H and a resistance of 52 O. The coil is connected to a 6.0-V battery. After a long time elapses, the current in the coil is no longer changing. What is the rate of energy dissipation in the coil
The voltage across an air-filled parallel-plate capacitor is measured to be 110.0 V. When a dielectric is inserted and completely fills the space between the plates as in the figure below, the voltage drops to 29.7 V.
The relationship between angular frequency and wavenumber for a deep water wave is: ?=gk????, what is the group velocity of the wave
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