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How many kilojoules of heat will be released when exactly 1 mole of aluminum, Al, is burned to form Al2O3(s) at standard state conditions?
One end of a brass bar is maintained at 296°C, while the other end is kept at a constant however lower temperature. The cross-sectional area of the bar is4.00 10-4 m2. Because of insulation, there is negligible heat loss during the sides of the bar.
The air around a spinning 142g baseball (below) of radius 3.55cm experiences a faster speed on the left than the right side, determine the pressure difference between the right and left sides of the ball
Assume you want the current through a 1.95 H inductor in series with a 0.25 Î resistor to be reduced to 0.100 percent of its original value. Obtain by what percent are the times different
What is the pressure 230.5 meter below the surface of the Atlantic Ocean? Suppose that atmospheric pressure is 1 at m and that the density of sea water is 1034 Kg per cubic meter. Give answer in Pascal’s?
question1at what distance from a proton is the magnitude of its electric field 2.3times105? what is magnitude of the
An air-filled parallel-plate capacitor has a capacitance of1pF. The plate separation is then doubled and na waxdielectric is inserted, completely filling the space between theplates. As a result, the capacitance becomes 2 pF. Findthe dielectric const..
A railroad car of mass 2.4 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
what is bragg scattering angle ? first orderfor an electrons beam scattered diffracted from the surface of ni crystal
Air is streaming horizontally past a small airplanes wings such that the speed is 50m/s over the top surface and 30 m/s past the bottom surface. the plane has a mass of 300 kg and a total wing area of 5 m^2(both wings).
Three resistors, 25, 45, and 75 Ohms, are connected in series, and a 0.51-A current passes through them. What is (a) the equivalent resistance and (b) the potential difference across the three resistors?
Each of the sources in the drawing emits a frequency of 4.57 multiplied by 1014 Hz, and the speed v is 2.50 106 m/s. Calculate the observed frequency fo in situation A. fo = ? UNIT?
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -20.6 µC. How many excess electrons does she get
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