Physics, 28.10.2020 17:50, lieunekop8fm90
Lake Mead, the reservoir above Hoover Dam, has a surface area of approximately 640 km2. The top 1 meter of water in the lake weighs about 6.3 x 1012 N. The dam holds that top layer of water 220 m above the river below, What is the potential energy of the top 1 m of water in Lake Mead.
Group of answer choices
140800 j
2156 j
1.38 x 10^15 j
14367.3 j
Answers: 1
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Which of the following correctly describes the early view of catastrophism?
Answers: 1
Physics, 22.06.2019 14:30, gus2006santos
Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.
Answers: 2
Physics, 23.06.2019 00:10, looloo273
An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b. what is the wavelength of the wave? c. what is the amplitude of the magnetic field? d. what is the intensity of the wave?
Answers: 3
Lake Mead, the reservoir above Hoover Dam, has a surface area of approximately 640 km2. The top 1 me...
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