Fluid Flow: A large cylindrical water tank 11.5 m in diameter and 13.5 m tall is supported with its base 8.75 m above the ground by a stand as shown in the figure. The water level in the tank is 10.6 m deep, and the density of the water in the tank is 1.00 g/cm3. A very small hole is formed at the base of the vertical wall of the tank, and water is squirting out of this hole horizontally. When this water hits the ground, how far has it traveled horizontally from the hole, assuming no air resistance?
Fill in the blank(s) with the appropriate word(s).
19.3 m
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a. infrared light. b. visible light. c. ultraviolet light. d. radio waves.
The angular measurement in hours, minutes, and seconds from the celestial prime meridian eastward is called _______________
a. sundial b. protractor c. declination d. right ascension
Dielectrics: A parallel-plate capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference across the plates. A slab of a dielectric material is inserted in the region between the plates and completely fills it. What changes would you observe as the dielectric is inserted? (There could be more than one correct choice.)
A. Only the charge on the plates of the capacitor would change. B. Only the capacitance would change. C. Both the charge on the plates of the capacitor and its capacitance would change. D. The potential difference across the plates would increase. E. Nothing would change.
Is it possible for the driver of a car to accelerate the car without pressing on the accelerator?
A) Yes, by pressing on the brake. B) Yes, by both of the above methods. C) Yes, by turning the steering wheel. D) No, because the only way to speed up is to press on the accelerator. E) No, because of the way that we define the word "acceleration" in physics.