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one of the most powerful cranes in the world operates in switzerland it can slowly raise a load of m 61840 tonnes to a
a tennis player tosses a tennis ball straight up and catches it after 30 sa what is the magnitude of the acceleration
three resistors r1 120 r2 180 and r3 360 are connected in parallel and in turn connected to a 700 v source with
william tell is shooting at an apple that hangs on a tree the apple is a horizontal distance of 200 m away and at a
please classify each of the following substances as a strong acid weak acid strong base weak base or neutralstomach
two points are given in polar coordinates by r 30 m 350deg and r 40 m -350deg respectively what is the distance
a hollow non-conductiong sphere has a uniform charge density the inner and outer radius of the sphere are r1 and r2m
calculate the mass in grams of iodine i-2 that will react completley with 204g of aluminum ai to form aluminum iodide
how many minutes does it take light from the sun to reach earth the sun is 93 million miles from earth and the speed of
a 75 kg person is standing in an elevator that is moving upwards at 05ms and accelerating downwards at 02 ms2 what is
a bat emits a sound whose frequency is 709 khz the speed of sound in air at 200 oc is 343 ms however the air
101 g cao is dropped into a styrofoam coffee cup containing 157 g h2o at 180oc if the following reaction occurs then
an aqueous nacl solution is made using 127g of nacl diluted to a total solution volume of 100la calculate the molarity
the charge q travels a distance d from point a to point b in a uniform electric field of magnitude e but this time the
two point charges 20cm apart have an electric potential energy -310uj the total charge is 15nca what is the lesser
a crate of mass 450 kg is being transported on the flatbed of a pickup truck the coefficient of static friction between
hagrid thinks he is more powerful than snapehe performs 1800 j of work in a total of 10 seconds snape does 2000 j of
percy did 1000 joules of work and exerted a power of 2 watts how many seconds did percy take to do his
a 2 kg block is pulled by the rope on the horizontal surface by a 3n force the coefficient of the static friction s
what volume in liters of gaseous hydrogen chloride can be prepared from 400 liters of hydrogen with excess of chlorine
an aqueous solution containing 359g of an unknown molecular nonelectrolyte compound in 1599g of water was found to have
if neville weighs 25 n and climbs a mountain and exerts 500 j of work how far did neville
if 100g of iron were reacted with 100g of oxygen according to the reaction below the maximum yield in grams of fe2o3
ginnys boat weighs 200 n and travels an unknown distance if the boat does 2200 joules of work how far does the boat
if harrys dog weighs 25n and harry lifts him up to a height of 10 meters how much work does harry