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a rider sits on a bicycle exercise machine and pushes downon the pedal with a force of 200 newtons through a
what is the resistance of a lightbulb that has a rating of115 w assume the lightbulb is designed for use in an ac
a gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions it
a baseball m 145 g traveling40 ms moves a fielders glove backward15 cm when the ball is caught what was the average
what is the relationship between the ionization energy of an anion with a 1- charge such as f- and the electron
a ball is suspended from 30 m long cable that makes a 30degree angle with vertical ball is released and swings down
two flat surfaces are exposed to a uniform horizontalmagnetic field of magnitude 058 t the first surface is tilted atan
a student sits on a rotating stool holdingtwo 5 kg objects when his arms are extendedhorizontally the objects are 09 m
the lewis symbol an x with 8 dots surrounding it 2 on each side would be characteristic of which groupa 3ab 6ac 8ad
a mass spectrometer has an adjustable magnetic field when themagnetic field is 2000e-2 t a singlyionized hydrogen atom
an arrow is shot horizontally from a cliff the cliff is 4217 m above the ground the arrow left the cliff with a speed
at 46 oc a sample of ammonia gas exerts a pressure of 319 atm what is the pressure when the volume of the gas is
a ball is thrown horizontally from the window of a building with an initial velocity of 121 mihr and lands 943 m from
the fuel value of hamburger is approximately 36 kcalgif a man eats 1 pound of hamburger for lunch and none of the
the siren of a police car at rest emits a predominantfrequency of 1600 hz and the police car is overtaking you from
use the periodic table to find the atomic number number of protons number of electrons and number of valence electrons
calculate the concentration in molesm3 of oxygen in air 21oxygen assuming it acts as an ideal gas at 21oc oxygen
an electric heater is rated at 1300 w a toaster is rated at 1150w and an electric grill is rated at 1530 w the three
a lawn roller is pushed across a lawn by a force of 115newtonsalong the direction of the handle which is225o above the
dry coke composed of 4 inert solids ash 90 carbon and 6 hydrogen is burned in a furnace with dry air the solid refuse
a very long straight wire carries a current of 017 a this wire is tangent to a single-turncircular wire loop that also
you stand on a frictional platform that is rotating at 14 revs your arms are outstretched and youhold a heavy weight in
the combustion of 01584 grams of benzoic acid increases the temperature of a bomb calorimeter by 245 degrees c
two ice-skaters whose masses are 45 kg and 75 kg holdhands and rotate about a vertical axis that passes between
a coil of inductance 90 mh and unknownresistance and a 080 microf capacitorare connected in series with an alternating