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A tank contains 26.0 kg of O2 gas at a gauge pressure of 8.10 atm. If the oxygen is replaced by helium, how many kilograms of the latter will be needed to produce a gauge pressure of 7.00 atm?
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a vertical force t is exerted on a 7.5 kg body near the surface of the earth. find the y-component of the acceleration
A ball is thrown upward,. At 5.00 m above its launch point, the ball's speed is one-third its launch speed. What maximum height above the launch point does the ball attain
a parcel of air moving in a straight tube with a constant acceleration of -3.55 ms2 and has a velocity of 14.5 ms at
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. For how long (in hours) is the sample usable
In one such decay the electron and the neutrino are emitted at right angles to each other. The electron (mass 9.11x10^ -31 kg)has a speed of 3.8x10^ 7 m/s and the momentum of 7.6x10^ -24 kg m/s. What is the recoil speed of the nucleus?
following questions are based on quality assurance and mechanical checks of a linac linear accelerator mechinea in
At the temperature calculated in (g), determine the wavelength of the maximum intensity and the total power emitted by the hot gas (using a surface area of 2Π5.5^2 for the flattened spheroid of gas).
The telescope at Yerkes Observatory in Wisconsin has an objective whose focal length is 19.4 m. Its eyepiece has a focal length of 10.0 cm. What is the angular magnification of the telescope
In the production of salt from sea water, the sea water is being run into a large pond 100 ft long, 20 ft wide, and 2 ft deep.
At the beginning of a dive, a diver is in the layout position with an angular velocity of 100°/s and a moment of inertia of 15 kg·m2. What is the diver's moment of inertia in the tuck position
a 0.1kg ball is attached to a string and whirled around in a circle overhead. the string breaks if the force exceeds
A cannon tilted up at a 26 degree angle fires a cannon ball at 71m/s from atop a 12m -high fortress wall
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