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a cube of ice is taken from the freezer at -85degc and placed in a 99 g aluminum calorimeter filled with 301 g of water
an iron boiler of massnbsp236nbspkg containsnbsp870nbspkg of water atnbsp19degc a heater supplies energy at the rate
anbsp196nbspg sample of a substance is heated tonbsp321degc and then plunged into anbsp98nbspg aluminum calorimeter cup
when a 290 g piece of iron atnbsp178degc is placed in a 100 g aluminum calorimeter cup containing 250 g of glycerin
what is the specific heat of a metal substance if 128 kj of heat is needed to raise 61 kg of the metal from 20degc to
what will be the equilibrium temperature when anbsp269nbspg block of copper atnbsp300degc is placed in anbsp136nbspg
a 92 dm long and even-weight rod rests on a support 055 dm from one end hangs a dynamometer so that the rod will hang
a buildings elevator initially starts on the ground floor it moves 216 m upwards to the sixth floor it then goes down
what are some types of radioactive decay what is the reason on why atoms
the speed of sound in air at 20degc is 344 msa what is the wavelength of a sound wave with a frequency ofnbsp196nbsphz
can someone please describe the photoelectric effect how did einsteins explanation of the photoelectric effect further
a 62 cm diameter pipe gradually narrows to 40 cm when water flows through this pipe at a certain rate the gauge
a 13 cm radius air duct is used to replenish the air of a room 94 m 45 m 50 m every 10 min how fast does air flow in
three forces given by f1nbsp -200i 200j n f2nbsp 500i - 300j n and f3nbsp -450i n act on an object to give it an
a 3 mg bullet is fired from a 1 kg musket with a velocity of 3000 ms what is the resulting velocity of the
compare the charge distribution on a flat surface compared to a curved surface and explain why these distributions
a passenger on a train hears a sound with a frequency of 496 hertz as the train approaches a bell on a trackside safety
a car horn produces a sound with a frequency of 400 hz the horn is sounded while the car is moving down the street in
a 047 kg piece of wood floats in water but is found to sink in alcohol specific gravity 079 in which it has an
1 there are two charges q1 of charge 2 muc and q2 of charge 5 muc that are located a distance d apart which charge
a steel piano wire 0918 m long has a crosssectional area of 000856 cm2 when under a tension of 142 n how much does it
gamma rays gamma-rays are high-energy photons in a certain nuclear reaction anbspgamma-ray of
a geiger counter registers a count rate ofnbsp4800nbspcounts per minute from a sample of a radioisotopenbspeight
a ball is attached to a horizontal cord of lengthnbsplnbspwhose other end is fixeda if the ball is released what will
a 95th percentile male is holding a 20 lb load in his outstretched arm in 90deg abduction what is the reactive torque