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an object placed 149 cm from a concave mirror produces a real image 123 cm from the mirror if the object is now moved
if a virtual image is formed 100 cm along the principal axis from a convex mirror of focal length -150 cm how far is
dry ice is solid carbon dioxide a 0149 g sample of dry ice is placed in an evacuated 477 l vessel at 260 degree c
a circular loop of radius 115 cm is placed in a uniform magnetic fielda if the field is directed perpendicular to the
dissolving 349 g of an impure sample of calcium carbonate in hydrochloric acid produced 635 l of carbon monoxide
a 9v battery is connected across a capacitor of 20uf through a switch which is initially open what is the amount of
the empirical formula of a compound is ch at 2000 degrees c0193 g of this compound occupies 972 ml at a pressure of 740
suppose the magnitude of the electric field in an electromagnetic wave is doubleda by what factor does the magnitude of
assume you dissolve 0235g of the weak acid benzoic acid c6h5cooh in enough water to make 001ml of solution and then
a lightning bolt consisting of electrons moves from the cloud to the ground near the equator it carries a current of
a use the dipole moments of hf and hcl hf 108 d hcl 182 together with the percent ionic character of each bond hf 20
if you are given a 026 g piece of sodium metal to react with water how many moles of hcl would it take to neutralize
one yoga exercise known as the downward-facing dog requires stretching your hands straight out above your head and
consider the dimerization 2a to a2 with forward rate constant ka and backward rate constant kb a derive the following
a particular wire has a diameter of 17 mm and length of 13 m if its resistance is 15 meter-ohms what is the resistivity
two resistors of resistance r are connected in parallel the combination is connected in series to a resistor of
950 g of 00 degree c ice is added to exactly 100g of water at 600 degree c when the temperature of the mixture first
n identical resistors are connected in series the resistance of one of them is equal to r what is the equivalent
a group of particles is traveling in a magnetic field of unknown magnitude and direction you observe that a proton
draw a picture of the following cell and write reduction half-reactions for each electrodeptsfe3 aqfe2aqcro72-aqcr3
if 840 kj of heat is needed to raise the temperature of a sample of metal from 15 degrees celsius to 20 degrees celsius
consider a tennis ball cannon people use to practice their gamea estimate the velocity of the ball shot out of these
the solubility of alf3 is 67 gms of alf3 per liter of solution the density of a saturated alf3 solution is 1grm per ml
a sample of 6820 g of an unknown compound containing barium ions ba2 is dissolved in water and treated with an excess
a laser beam is traveling through an unknown substance when it encounters a boundary with air the angle of reflection