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A wide rectangular channel has a slope S= 0.02. The bed and walls of the channel are paved with concrete. The value of mannings roughness coefficient is n= 0.014 and the deischarge per nit width of the channel is q= 3m2/s. Specify if the flow in the cahnnel is sub or supercritical and find the depth and velocity of the flow
The electric field near the middle of a long, thin, uniformly charged rod is 3.6x10^4 N/C at a distance of 9.50 cm from the rod. If the rod's length is 17.8 m
An aluminum beam 86 m long and with a cross-sectional area of 0.107 m2 is used as part of a bridge, If the temperature of the beam is increased by 31°C, what is magnitude of the extra force exerted by the beam on one of its supports
The pitch of the sound from a race car engine drops the musical interval of a third when it passes the spectators. How fast is the race car moving
Electrons accelerated by a potential difference of 12.86 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength
In the annual battle of the dorms, students gather on the roofs of Jackson and Walton dorms to launch water balloons at each other with slingshots. Find the initial speed of this second balloon
At the top of Earth's atmosphere, sunlight has an average intensity of 1380 W/m^2. at what rate does the Sun radiate energy
A very thin sheet of glass (n = 1.5) floats on the surface of water (n = 1.33). What is the thickness of the glass
A gasoline engine in a large car takes in 10,500J of heat and delivers 2450J of mechanical work per heat cycle. How much gasoline is burned during each cycle
A hotel elevator ascends 110 {rm m} with a maximum speed of 4 {rm m/s}. Its acceleration and deceleration both have a magnitude of 1.20 {rm m/s^2}.
As part of a circuit act, a person drives a motorcycle with constant speed v around the inside of a vertical track of radius r. If the combined mass of the motorcycle and rider is m, find the normal force exerted on the motorcycle by the track at ..
Three positively charged particles are constrained to move on a fixed circular track. If all charges were equal, the particles would be spaced 120 degrees apart. Now suppose that two charges are equal and they are spaced 90 degrees apart in the equil..
On the small and good planet Ballonius in a distant solar system, suppose we find the radius of the good planet to be 210,000 m. Estimate the mass of Ballonius
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