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air is heated at a rate of 50kw as it flows at a steady rate downwards through a vertical ductthe mass flow rate of air
1 what was the original definition of kilogram2 what is the current definition of the kilogram based on3 what was the
the bohr radius of the hydrogen atom is 0529 or 00529 nm assuming that we know the position of an electron in this
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list types of collector equipment as designed in the control of air
the brinell hardness of a steel specimen was measured to be 250hb what is the materials approximate tensile strength
differentiate between tractive coefficient and drawbar pull as used in mechanics of
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an emf source of 120v is connected to a purely resistive lamp and a current of 40 amperes flows all the wires are
1 a female archer pulls slowly back 075 m on a bow which has a theoretical stiffness of 200 newtonsmeter the arrow has
there are exactly 60 seconds in a minute there are exactly 60minutes in an hour there are exactly 24 hours in a mean
why is a solar water heater generally installed with a glasscover on the top to be insulated from the outside air
1 a free electron has wave functionx t sinkx -wtdetermine the electrons de broglie wavelength momentum kinetic energy
if you use 50 j of work to push a charge into an electric field and then release the charge as it flies past its
a negatively charged rod is brought near a metal can that rests on a wood table you touch the opposite side of the can
you are driving towards a traffic signal when it turns yellow your speed is 55kmh and your best decleration has the
a block of mass 0440 kg is hung from a vertical spring and allowed to reach equilibrium at rest as a result the spring
a solid sphere of radius r is made of a metallic conductor a hollow spherical shell of the same radius r is made of the
describe the units used in measurement and exposure of gamma
a machine gun fires 25 g bullets with a muzzle velocity of 800 msthe firing rate is 200 rounds per minute determine the
an aircraft has a liftoff speed of 33 ms what minimum constant acceleration does this require if the aircraft is to be