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what is the maximum energy that a free electron initiallystationary can acquire in a collision with a photon of energy
how can you decide whether an observed property of matter is a physical or chemical
a 200 kg block is held in equilibrium on an incline of angletheta 60deg by ahorizontal force vector f applied in the
a 864-ppm 1 ppm 1 mglsolution of fescn2 has a transmittance of 0295 when measured in a 100-cm cell at 580 nm calculate
the dipole moment of a water molecule is62times10minus30 cmiddotm what is the electric potentialdue to this dipole at a
a box is sliding with a speed of 450 ms on ahorizontal surface when at point p it encounters a roughsection on the
a car with a mass of 1000kg is traveling with a velocity of12msthe friction due t air resistance is 750na what is the
how many grams of potassium chlorate decompose to form potassium chloride and 460 ml o2 at 128degc and 684
a sample of air contains 7650 nitrogen 2270 oxygen 005 carbon dioxide and 075 argon by volume how many molecules of
a 376 ml container holds 0146 g of ne and an unknown amount of ar at 35degc and a total pressure of 630 mmhg calculate
the ammonia molecule nh3 has adipole moment of 48e-30 cmiddotm ammonia molecules in the gasphase are placed in a
when 0633 l of ar at 120 atm and 227degc is mixed with 0185 l of o2 at 501 torr and 127degc in a 400 ml flask at 27degc
the mole fraction of kno3 in an aqueous solution is 0194 the density of the solution is 10627 gml calculate the
a circular steel plate of radius 010 m is cooled from350oc to 20oc by what percentage does the plates area
1 what is the difference between the terms electric potential and voltage give an example2 how can the knowledge of
what intermolecular forces account for the difference in boiling point for ethyl acetate and butyl acetatei know ethyl
a bag of fertilizer is labeled 15-20-5 nitrogen-phosphorous-potassium what is the actual percentage of phosphorous in
will burns a o6-g peanut beneath50 g of water which increases in temperature from 22deg c to 50deg ca assuming 40
a proton moves in a circular path perpendicular to a 118 t magnetic field the radius of its path is850 mm calculate the
how many gallons of ethanol can be produced per 100 tons bone dry short ton of dry corn stover assume the corn stover
a 250 kg child on a 200 m long swing is released from restwhen the ropes of the swing make an angle of 30 degrees with
sucrose is allowed to diffuse along 80 cm length of tubing filled with water the tube is 56 cm2 in cross-sectional area
darius the dare devil plans to launch his rocket carat the top a ramp inclined at 200 degrees to the horizontal over
two wires are identical except that one is aluminum and oneis iron the aluminum wire has a resistance of 21ohms what is
a copper cable is designed to carry a current of 330 a with a power loss of 160 wm what is the required radius of this