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a 7 kg ball has a velocity of 16 msa what is the kinetic energy of the balljb how much work would be required to stop
how much energy in kilojoules is released when 134 of steam at 1225 is condensed to give liquid water at 715 the heat
consider the l1 to l0 transition in the hcl molecule if the sample contains two isotopes of chlorine 35cl and 37cl the
a box with a mass of 5 kg is lifted without acceleration through a height of 2 m to place it upon the shelf of a
a net force of 30 n accelerates a 6 kg mass over a distance of 12 ma what is the work done by this net forcejb what is
a 05 m buffer will require five times as much acid or base as a 01 m buffer for a given ph changestarting with 65 ml of
a point source emits sound waves with a power output of 130 w at what distance will the decibel reading be 120 db which
state the chemical formula of salt and classify the bond as ionic polar covalent or non-polar
the vibrational frequency of co molecule is 642 x 1013 hz1 estimate the amplitude of molecular
you have 4000 ml of an aqueous solution containing two analytes 0400 m hydroxylamine honh2 and 015 m sodium hydroxide
a block of mass m 20 kg is dropped from height h 90 cm onto a spring of spring constant k 1960 nm find the maximum
a solid sphere has a temperature of 628 k the sphere is melted down and recast into a cube that has the same emissivity
a wire has a length of 620 10-2 m and is used to make a circular coil of one turn there is a current of 280 a in the
a car parked in the sun absorbs energy at a rate of 540 watts per square meter of surface area the car reaches a
a moving 450kg block collides with a horizontal spring whose spring constant is 494 nm the block compresses the spring
isopentyl acetate a molecule composed of c h and o smells like bananas combustion analysis of 1750 grams of this
the ends of a thin bar are maintained at different temperatures the temperature of the cooler end is 8degc while the
suppose i have three small objects of equal mass m i place them on a massless rigid circular hoop of radius r i arrange
benzyl alcohol although a primary alcohol reacts very rapidly in the presence of hcl forming benzyl chloride whya the
in a house the temperature at the surface of a window is 16degc the temperature outside at the window surface is 9degc
a 1kg ball is fastened to a string of length 15m it can rotate at an average angular velocity of 10 radsa if the ball
one end of an iron poker is placed in a fire where the temperature is 495degc and the other end is kept at a
if 597 ml of a solution contains 254 mg of sodium ion what is the molarity of the sodium chloride
which of the following particles carries nuclear interactionsa neutrinob gamma raysc alpha particlesd pi
usually as a solution cools the solvent will crystallize out of the solution as the pure solvent what effect will this