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a tortoise can run with a speed of 011 ms and a hare can run 20 times as fast in a race they both start at the same
a new record for running the stairs of the empire state building was set on february 3 2003 the 86 flights with a total
a 900 bullet has a speed of 110 kms1 what is its kinetic energy in joules2 what is the bullets kinetic energy if its
a tennis player tosses a tennis ball straight up and then catches it after 165 s at the same height as the point of
a block is projected up a frictionless inclined plane with initial speed v0 144 ms the angle of incline is 458dega
at 46 degrees celsius a sample of ammonia gas exerts a pressure of 53 atm what is the pressure when the volume of gas
a magnetic field is oriented at an angle of 43 to the normal of a rectangular area 62 by 59 if the magnetic flux
children in a tree house lift a small dog in a basket 480 up to their house if it takes 221 j of work to do this what
when you calculated k in the rate equation for the reaction of kmno4 solution and h2c2o4 solution you assumed k had the
nichrome wire of cross-sectional radius 0754 mm is to be used in winding a heating coil if the coil must carry a
a 01225-g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 jdeg c the
an object moves with constant acceleration 420 ms2 and over a time interval reaches a final velocity of 118 msa if its
a sample of pure calcium fluoride with a mass of 150 g contains 770 g of calcium how much calcium is contained in 450 g
a truck covers 400 m in 735 s while uniformly slowing down to a final velocity of 340 msa find the trucks original
methane and oxygen react to form carbon dioxide and water what mass of water is formed if 32 g of methane reacts with
you break a piece of styrofoam packing material and it releases lots of little spheres whose electric charge makes them
for a certain experiment r-140a vapor is contained in a sealed glass tube at 20 degrees celcius we want to know the
a metal strip 20 cm wide and 01 cm thick carries a current of 24 a in a uniform magnetic field of 24 t as shown below
a reverse osmosis unit is used to obtain drinkable water from a source that contains 0570 g nacl per liter what is the
a shell is shot with an initial velocity of 17 ms at an angle of 0 60deg with the horizontal at the top of the
2hig h2g i2g keq 0016initially a container contains 060 m hi 0038 m h2 and 015 m i2 at equilibrium what is the new
the membrane that surrounds a certain type of living cell has a surface area of 535 10-9 m2 and a thickness of 990 10-9
a dentists drill starts from rest after 353 s of constant angular acceleration it turns at a rate of 266e4 revolutions
you have 2000 ml hcl aq - you are able to reach equilibrium at ph 700 through titration by adding 1425 ml of 02030 m
in the figure set v 0 at infinity and let the particles have charges q1 q -540times10-5 c and q2 -6q they are