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Gas is contained in an 6.4 L vessel at a temperature of 20°C and a pressure of 8.2 atm.
(a) Determine the number of moles of gas in the vessel.
1__________ mol
(b) How many molecules are in the vessel?
2__________ molecules
Galaxies form by gravitational collapse of regions that are denser than average. Noting that the present day average mass density of the universe is ρ = 3 × 10-30 g/cm-3, estimate how long it takes for a galaxy to collapse.
A 99 kg girl dives off a raft 2.25 square meters floating in a freshwater lake. By how much does the raft rise in cm
A baggage handler throws a 20kg suitcase along the floor of an airplane luggage compartment with a speed of 1.2 m/s. What is the suitcase's coefficient of kinetic friction on the floor
An electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of time as E = 54 V/m × sin (6x106 Hz × t). How much momentum is absorbed by the foil for the same time interval
An open organ pipe 0.750 {\rm m} long has its first overtone at a frequency of 441 {\rm Hz}. What is the temperature of the air in the pipe
Write down the equation for a transverse sinusoidal wave with an amplitude of 2.5 cm and an angular frequency of 2.90 rad/s that is moving along the positive x-direction with a wave speed that is 5 times as fast as the maximum speed of a point on ..
Two narrow slits are illuminated by a laser with a wavelength of 537 nm. The interference pattern on a screen located x = 5.50 m away shows that the second-order bright fringe is located y = 6.00 cm away from the central bright fringe. Calculate the ..
An infinitely long cylinder, radius a, carries a current I, distributed uniformly over its cross-sectional area. The axis of the cylinder coincides with the z-axis.
A 90 g bead on a 60 cm long string is swung in a vertical circle about a point 200 cm above the floor
an inductor that has a resistance of 40 ohm is connected to an ideal battery of 224V. Calculate the inductorace
question1as thermonuclear fusion proceeds in its core the sun loses mass at a rate of 3.64 109 kgs. for the duration of
A 77.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, Calculate the volume of air he inhales--called his lung capacity--in liters
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