Maximize the electric force
The two positive point charges are a fixed distance apart. The sum of their charges is Q_T. What charge should each encompass in order to (i) maximize the electric force among them and (ii) minimize it?
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In winter a lake consists of a 0.25 m thick ice layer over 1.50 m of water. A light beam from over hits a spot on the ice, making a 32 circ angle with the normal. Determine how far horizontally from which spot does the light ray hit the lake botto
X-rays having wavelength 49.7 pm are incident on the target. (i) Determine the wavelengths of the x-rays scattered at 45.0°.
The Garfield Thomas water tunnel at Pennsylvania State University consists of a circular cross section which constricts from the diameter of 4.5 m to the test section that is 1.2 m in diameter. When the speed of flow is 2.6 m/s in the larger-diame
You're curious to know whether Hartnell College students on average study more than three hours per day. So you surgery 30 students randomly and ask them individually regarding the number of hours they study per day. You want a confidence level of
A photon consists of an energy E and wavelength\lambda before scattering from a free electron. After scattering via a 140°, the photon's wavelength has raised by 11.0%. Determine the initial wavelength of the photon in pm.
In the survey of 200 students, it was found that 60 students said English was not their first language. Make a 95% confidence interval for true proportion of students whose first language isn't English.
Assume that the water strikes the ground 4.25 m from the hole in the tank. When the hole is 2.45 m above the ground, determine how far above the hole is the water level?
Determine the hydroxide-ion concentration of a solution if its hydronium-ion concentration is around 1 x 10^-5 mole per liter? Determine the pH of the solution.
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