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in the bohr model of hydrogen the electron moves in a circular orbit around the nucleus determine the angular speed of
what are the concentrations of acetic acid and acetate ion in 035m acetate bufferph 460 the pka of acetate is
an ac voltage of the form v 100 sin 1 000t where v is in volts and t is in seconds is applied to a series rlc circuit
gold and silver have densities of 193 and 105 grams per cubic centimeter respectively if you have equal volumes of each
determine the moment of inertia for three children weighing 570 lb 420 lb and 78 lb sitting at different points on the
an engine with an output of 2670 w has an efficiency of 390 it works at 900 cycless how much work is done in each
heat energy is added to a 352g block of nickel and the temperature increases from 21 c to 53 c if the same amount of
a heat engine operates between two reservoirs at temperatures of 195oc and 313oc what is the maximum efficiency
250 moles of an ideal gas at an initial pressure of 300 x105 nm2 and an initial volume of 1400 m3 undergo a small
the maximum possible efficiency of a heat engine which exhaust its heat at a temperature of 420o is 440 percent what is
two long parallel wires separated by a distance d carry currents in opposite directions if the left-hand wire carries a
an undersea research chamber is spherical with an external diameter of 350 the mass of the chamber when occupied is
two wheels have the same mass and radius of 48 kg and 054 m respectively one has a the shape of a hoop and the other b
a helicopter has two blades each of which has a mass of 270 kg and can be approximated as a thin rod of length 67 m the
starting from rest a basketball rolls from the top to the bottom of a hill reaching a translational speed of 75 ms
the stanford linear accelerator can accelerate electrons to ener- gies of 50 gev what is their de broglie wavelength
the isotope shift of spectral lines refers to the shift in wave- lengths or frequencies due to the different masses of
in an oscillating lc circuit l 330 mh and c 270 microf at t 0 the charge on the capacitor is zero and the current is
a package of mass is released from rest at a warehouse loading dock and slides down the h 26m - high frictionless
how far from a concave mirror of radius 025 m must an object be place for a real image to be formed 1 m from the mirror
if 0230g of sodium metal reacts with 0355g of chlorine gas what is the mass of sodium chloride
consider a motor that exerts a constant torque of 250 to a horizontal platform whose moment of inertia is 500 assume
if you were to prepare a 100 solution of beginning with water at 215 what would the final temperature of the solution
a youve been given the task of designing a water couch-that one could lie on floating on a lake for instance-in the
the earth has a radius of about 635 106 m and a mass of 598 1024 kg what would be the radius if the earth had the same