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the open end of a garden hose is directed horizontally at aheight of 125 m above the ground water issues from the
a rotating wheel requires 3 s to rotate 37 revolutions its angular velocity at the end of 3 s interval is 98 rads what
calculate the mass of each product formed when 174 g of silver sulfide reacts with excess of hydrochloric acid hciag2s
how much less would you weigh on the top of mount everest elevation 8850 than at sea level the value of the universal
an 80g ice cube at -10 degrees celcius is pu into a thermos flask containing 100cm cube of water at 20 degrees celcius
a stone is thrown with an initial speed of 15 ms at an angle of 53degrees above the horizontal from the top of a 35m
a certain amount of gas at 25degrees celcius and at a pressure of 0800atm is contained in a glass vessel suppose that
a boy pulls a 20 -kg box with a 50- n force at 37 degreeabove a horizontal surface the coefficient of kinetic
a 720-kg bungee jumper jumps from a bridge she istied to a bungee cord whose unstretched length is 120 m and fallsa
calculate the ph of a solution containing 035m lactic acid and 025m sodium lactate is this a buffered solution explain
a small particle with a mass of 2 kg carrying a charge of 2nc is at the surface of a charged spherical conductor of
the plates of a parallel plate capacitor are separated byd 10 cm the potential of the negative plate is 0 vand the
the gravitational forces of earth and the moon are attractive so there must be a point on a line joining their centers
calculate the ph of a solution containing 020m in hcn and 012m nacn is this a buffered
the dielectric strength of air is 30x106 vm and that of neoprene rubber is 12x107 vm a certainair-gap parallel-plate
given a solution of ammonium chloride what additional reagent or reagents are needed to prepare a buffer from the
a wheel 400 cm in diameteraccelerates uniformly from 200 rpm to385 rpm in 50 s how far will a point on the edge of the
1-consider the element with the electron configuration kr5s2 4d10 5p3 this element isa an alkali metal b a
a power supply that provides a voltage of 300vmiddotsin317middott where t is in seconds is connectedacross a resistor r
a mixture of the compounds sodium bromide and calcium oxide contains 234 g of calcium oxide and is 691 by mass calcium
a 70 kg box is raised from rest adistance of 10 m by a vertical forceof 120 na find the work done by the forcejb find
the drawing shows a point charge q 058microc and two locations a and b what is the electric potential differencevb -
describe how you would prepare 1000 l of 005m hepes buffer ph 745 in the lab you have pure hepes a ph meter 100 m hcl
the displacement vector for a 150 second interval of a jetairplanes flight is 215e3 -2430 ma what is the magnitude of
calculate the equilibrium constant for the weak base ch3nh2 if a solution of the base with an initial concentration of