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When twelve moles of hydrogen and six mole of oxygen react to form twelve moles of water, the energy released is 2904 kJ. How much does the mass of the elements decrease in this reaction?
What % of the total original mass of the system does this mass change represent?
a block with a mass m and charge q is placed in an electric field e a i b j where a and b are constants. if the block
an initially stationary block of mass m on a floor. A force of magnitude F = 0.580·mg is then applied at upward angle ? = 16°. What is the magnitude of the acceleration of the block across the floor if (a) ?s = 0.600 and ?k = 0.500
A 3-kilogram block slides along on a frictionless surface at 6 m/s north and strikes an obstacle that exerts an impulse on the block of 9 N-s to the south
A bolt is dropped from a bridge under construction, falling 94 mto the valley below the bridge. (a) In how much time does it passthrough the last 28% of its fall? What is its speed (b) when itbegins that last 28% of its fall and (c) when it reaches t..
A 0.275 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.220 kg puck that is initially moving along the x axis with a velocity of 2.18 m/s, Determine the velocity of the 0.275 kg puck after the collsion
Consider two parallel-plate capacitors, C1 and C2, that are connected in parallel. The capacitors are identical except that C2 has a dielectric inserted between its plates. What is the final voltage across the two capacitors
a flat surface with area 2.2 m2 is in a uniform electric field of 910 nc . what is the electric flux through the
A student decides to measure the muzzle velocity of a pelletshot from his gun. He points the gun horizontally. what is the initial speed of the pellet
A ball rolls off a table and falls 0.81 m to the floor, landing with a speed of 5.5 m/s. What initial speed must the ball have if it is to land with a speed of 6.3 m/s
A 2.50g bullet, travelling at a speed of 395m/s, strikes the wooden block of a ballistic pendulum. The block has the mass of 265g. How high does the combination rise above its initial position.
A two-slit experiment with slits separated by 3.5 10-4 m produces a second-order maximum at an angle of 0.0670°. Find the wavelength of the light used in this experiment
Suppose you point a pinhole camera at a 15-m-tall tree that is 75m away. If the film is 22cm behind the pinhold, what will be the size of the tree's image on the film
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