What angle do the suns rays in air
Sunlight strikes the surface of a lake. A diver sees the Sun at an angle of 28.4° with respect to the vertical. What angle do the Sun's rays in air make with the vertical?
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For a particular card game a standard deck of cards has all of the aces, kings, queens, and jacks removed. Among the 36 cards remaining two cards are chosen simultaneously at random. What is the probability that the sum of the two cards is greater
A ray of light in the coating is incident on the plastic-glass boundary at an angle of 10.5° with respect to the normal. At what angle with respect to the normal is the ray transmitted into the glass?
Tank that is initially evacuated is connected by a valve to an air supply line flowing air at 20 degree C, 800 kPa. The valve is opened, and air flows into the tank until the pressure reaches 600 kPa.
What is the volume occupied by the water vapor? What is the volume occupied by the liquid water? Show this process on a sketch of a T-v diagram, with the saturation dome shown for reference.
Steam flows steadily into a turbine with a mass flow rate of 26 kg/s and a negligible velocity at 6 MPa and 600 C. The steam leaves the turbine at 0.5 MPa and 200 C with a velocity of 180 m/s.
Sketch the steady-state temperature and heat flux distributions, T(x) and q''x(X) respectively. Include a sketch of the distributions.
A piston-cylinder device contains a liquid-vapor mixture of water at 300K. During a constant-pressure process, 750kJ of heat is transferred to the water.
Light of wavelength 657.9 nm is emitted by a star. The wavelength of this light as measured on Earth is 659.3 nm. a. How fast is the star moving with respect to Earth?
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