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(a) Why does the land lose heat more quickly at night than a body of water does?
(b) Deserts are very hot during the day and cold at night. Why is there such a large nocturnal temperature drop?
A light ray strikes glass of an aquarium at an angle of 45 degree and emerges in water at an angle 31.7 degree. Evaluate the coefficient of refraction of water
You've been given the task of designing a "water couch"-that one could lie on, floating on a lake, for instance-in the form of a flat rectangular slab made of Styrofoam with a density of 85 kg/m 3. Explain why he will not be able to breathe that wa..
Most dentist in the United States are make as the majority of nurses are female. These differences show how different cultures define.
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
Two ice skaters, with masses of 50.0kg and 75.0kg , are at the center of a 40.0m -diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink. If the heavier skater reaches the edge in 40.0s , how long does..
A computer to be used in a satellite must be able to withstand accelerations of up to 23 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
A beam of electrons is accelerated through a potential difference of 10kV before entering a velocity selector. If the B-field of the velocity selector is perpendicular to the velocity and has a valueof 0.05 T, what value of the E-field is required..
In 2.0 minutes, a ski lift raises four skiers at a constant speed to a height of 140 m. What is the average power provided by the tension in the cable pulling the lift
A water bed has dimensions of 1.83 m x 2.13 m x 0.229 m. The floorof the bedroom will tolerate an additional weight of no more than6660 N. Find the weight of the water in the bed to determinewhether it should be purchased.
What is magnetic flux through the desk surface
An ideal gas is kept in a container of constant volume. Thepressure of the gas is also kept constant. The number of moleculesin the gas is halved. what is the final rms speed
Figure 25-32 shows a circuit section of four air-filled capacitors that is connected to a larger circuit. The graph belowthe section shows the electric potential V(x) as afunction of position x along the lower part of thesection, through capacitor..
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