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A container of gas molecules is at a pressure of 2 atm and has amass density of 1.7 grams per liter. All of the molecules in the container are diatomic nitrogen molecules with an atomic weight of 28 grams per mole. Find the typical speed of the nitrogen molecules in the container? Here we define the typical speed to be the root-mean-square velocity (RMS velocity = vrms) of the center of mass of the molecule.
The current in a coil drops from 3.1 A to 2.6 A in 0.53 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
An object with a height of 42 cm is placed 2.3 m in front of a convex mirror with a focal length of -0.40 m. Find the location and magnification of the image
A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side. The top of each side is a distance above the bottom of the bowl. The left half of the bowl is rough enough to cause the marble to roll without slipping, ..
You have to do 2100Joule of work to push a 90 kilogram crate 2.5 meter up along a slope inclined at 20o. Find the coefficient of static friction between slope and crate
A particular engine has a power output of 4.00 kW and an efficiency of 23.0%. Assume the engine expels 7000 J of energy in each cycle. Find the energy absorbed in each cycle
There is a function generator driving a series RC circuit. The function generator provides an AC current of I(t) = Io sin(2? f t), What is the reactance of the capacitor
A toaster is rated at 580 W when linked to a 70 V source. What current does the toaster carry, and what is its resistance?
A worker drags a 150lb. crate across the floor by pulling on a rope inclined at 17degrees above the horizontal. What tension in the rope is required to start the block moving
a light ray of wavelength 550 nm initially in water enters a transparent substance at an angle of 37 degrees with
The mean lifetime of stationary muons is measured to be 2.3500 µs. The mean lifetime of high-speed muons in a burst of cosmic rays observed from Earth is measured to be 13.500 µs. To five important figures, what is the speed parameter β of these cosm..
A cancer patient is undergoing radiation therapy in which protons with an energy of 1.2 MeV are incident on a 0.25 Kg tumour. How many protons are absorbed by the tumour
the peak power of a 6ft. diameter antenna is 10 watts and its duty cycle is 0.250. the wave length is 0.03mcycle.
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