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Equal moles of helium and nitrogen were used to fill a 2.6 liter latex balloon (porous membrane). It was determined that the helium escaped from the balloon at 2.75 ml/min. How long will it take for the whole balloon to be empty of all the two gasses?
A child whose weight is 262 N slides down a 4.80 m playground slide that makes an angle of 49° with the horizontal. The coefficient of kinetic friction between slide and child is 0.09.
A potential difference is applied between the electrodes in a gas discharge tube. What is the current in the tube
A disk of radius 2.3 cm has a surface charge density of 6.2 µC/m2 on its upper face. What is the magnitude of the electric field produced by the disk
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.50uT and a wavelength of 430nm is traveling in the +x direction through empty space. What is the amplitude of the associated electric field
What was the displacement of the spring. An elevator and its load have a combined mass of 1400 kg. Find out the tension in the supporting cable when the elevator, originally moving downward at 12 m/s, is brought to rest with constant acceleration i..
A rocket moves upward, starting from rest with an acceleration of 29.9 m/s2 for 3.31 s. It runs out of fuel at the end of the 3.31 s but does not stop. Evaluate how high does it rise above the ground?
A 33.0cm focal length converging lens is 17.2cm behind a diverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
A 2-2-2 kinematic coupling uses 19-mm silicon nitride balls and tungsten carbide vees. Determine the Hertz contact stresses for a 50 N coupling load. Is this kinematic coupling overloaded? Where are the locations of maximum compressive, shear and ten..
You have 30 tuning forks that oscillate at close but different frequencies. What are the minimum number of different beat frequencies you can produce by sounding the forks 2 at a time
A 2.18-m-long diving board of mass 13.2 kg is 3.00 m above the water. It has two attachments holding it in place. what are the forces acting on the two attachments
A block of mass m = 2.00 kg is released from rest at h = 0.700 m from the surface of a table, How far from the table will the block hit the floor
Two converging lenses, the first with focal length 25 cm and the second with focal length 20 cm, are separated by 30 cm. What is the height of the final image
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