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a kid balances on a pogo stick his mass combined with the mass of the pogo stick is 22kg the base of the pogo stick has
a car weighs 2415 pounds and the rocket mounted on the car provides 1500 lbs of constant thrust calculate the time
a girl let go of her 25kg hula hoop at the top of a hill the slope of the hill is 15 degrees how fast is the hula hoop
a solid spherical ball of mass 336 kg and radius 008 m rolls along a smooth level surface with a speed of 2 ms what is
sound is passing perpendicularly through an open window whose dimensions are 11 m x 075 m the sound intensity level is
an infant ibuprofen suspension contains 100 mg 50 ml suspension the recommended dose is 10mgkg body weight how many ml
what is the frequency heard by a person driving 7917 kmh toward a blowing factory whistle f 50677 hz is the air
acid chlorides undergo reaction with grignard reagents at -78 degree celsius to yield ketones propose a mechanism for
a 056 kg block is hung from and stretches a spring that is attached to the ceiling a second block is attached to the
the turntable in a microwave oven has a moment of inertia of 006 kg meters squared and is rotating once every 401 s
a ten pound car wheel has a moment of inertia of 038 kg m2 while rotating at a constant speed the wheel makes 6796
butane has a heat of vaporization of 2244 kjmol and a normal boiling point of -04 c a 250 ml sealed flask contains 075
spark plugs should be tightened to a specified torque of 1364nm you have a wrench that is 027 m long but because of the
a small steel ball bearing with a mass of 170 g is on a short compressed spring when aimed vertically and suddenly
if your body develops a charge of -11 microcoulombs how many excess electrons has it
one end of an insulated metal rod is maintained at 100 while the other end is maintained at 0 by an ice-water mixture
radio waves travel at the speed of light which is 300 x 108 ms how many kilometers will radio messages to outerspace
a mineral oil has a density of 0875gcm3 suppose you spread 065g of this oil over the surface of water in a large dish
a mass m05kg is hung from a pulley with moment of inertiai020 kgm2 and radius r10cm there is frictionin the pulley the
a horizontal force of 80 n acts on a mass of 6 kg resting on a horizontal surface the mass is initially at rest and
what is the percentage of fe in ironii ammonium sulfate hexahydrate fenh42so42 6
a styrofoam bucket of negligible mass contains 175 of water and 0450 of ice more ice from a refrigerator at -140 is
a star is 494 times 1020 m from the earth if this star was to burn out today how many years would it take before we
the energy required for the ionization of a certain atom is 344 x 10-18 j the absorption of a photon of unknown