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What is the mass of hydrogen and the mass of oxygen in one liter of water? How many atoms of hydrogen and atoms of oxygen does it contain? What is the mass of one H2O molecule in kilograms?
One tonne of good-quality oil shale will produce 30 gal of oil. What is the energy content of this shale relative to 1 t of bituminous coal
A horizontal wire of length 0.43 m, carrying a current of 6.9 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
a beam of hydrogen molecules h2 is directed toward a wall at an angle of 55deg with the normal to the wall. each
A person on earth notices a rocket approaching from the right at a speed of 0.78c and another rocket approaching from the left at 0.58c. What is the relative speed between the two rockets, as measured by a passenger on one of them?
An x-ray photon has 35 keV of energy before it scatters from a free electron, and 19 keV after it scatters. What is the kinetic energy of the recoiling electron
Two ropes are attatched to a heavy object. What is the total resultant if the two women pull
The centers of a 10kg lead ball and a 90g lead ball are separated by 8.0cm. What is the ratio of this gravitational force to the weight of the 90g ball
Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires a..
Two springs, with force constants k1 and k2, are connected in series, as shown in the figure. How much work is needed to stretch this system a distance x from the equilibrium position?
A 144-g cricket ball moving 28.0 m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. What is the cricket ball's speed after the collision
a flat surface having an area of 3.6 m2 is rotated in a uniform electric field of magnitude e 5.6 x 105 nc.determine
presume you had job offers from two companies that differed only in how often they produced CEOs. Would these differences affect your decision.
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