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A ray of light in air makes an angle of incidence of 30.2 as it enters an unknown liquid. the refracted ray in the fluid meassured to be 22.5. Find the index of refraction of the unknown liquid. What substance might it be?
A 340 g air track cart traveling at 1.25 m/s collides elastically with the 300 g cart traveling in the opposite direction at 1.33m/s. What is the speed of the 300g cart after collision.
A bus is traveling up a hill at a speed of 34m/s. The hill is 23 degrees relative to horizontal and the coefficient of static friction between the bus's tires and the road is 0.6
A projectile is fired at an upward angle of 45° from the top of a 308m cliff with a speed of 198 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
Sam is a 60 kg diver. At the instant of take-off, his angular momentum about his medial-lateral axis is 20 kg x m^2/s, At take-off what is Sam's angular velocity about the medial-lateral axis
35mm camera is equipped with a 45 mm focal length lens is used to photograph a tree 15 m tall, what is the aperture diameter
Alpha-particle scattering experiments using uranium (Z = 92) as the target material show that the alpha-particles experience a pure Coulomb repulsion, Estimate the radius of the uranium nucleus
A certain car battery with a 14.0 V emf has an initial charge of 195 A•h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how long in hours can it deliver energy at the rate of 184 W.
Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 2.0cm . The pressure difference between the tubes is 7.6kPa
The relationship between angular frequency and wavenumber for a deep water wave is: ?=gk????, what is the group velocity of the wave
A bungee jumper undergoes simple harmonic motion with amplitude 7.9m and frequency 0.110Hz. Determine the bungee jumper's velocity
Assume that positive -axis is directed toward the direction of motion of cart 2.
Suppose you have a lens system that is to be used primarily for 770 nm light. What is the second thinnest coating of fluorite that would be nonreflective for this wavelength
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