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Suppose the minimum uncertainty in the position of a particleis equal to its de Broglie wavelength. If the particle has anaverage speed of 4.1 105 m/s, what is the minimum uncertainty in its speed?
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
The current in a series circuit is 14.9 A. When an additional 10.6-? resistor is inserted in series, the current drops to 9.47 A. What is the resistance in the original circuit
Calculate the voltage of an equipotential line between the plates of a capacitor if the distance of the line to the negative plate is m and the intensity is 20 N / C
The drawing shows four point charges. The value of q is 1.83 µC, and the distance d is 0.99 m. Find the total potential at the location P
A 0.38 kg iron horseshoe that is initially at 580°C is dropped into a bucket containing 21.8kg of water at 21 °C. What is the final equilibrium temperature (in °C)? Avoid any heat transfer to or from the surroundings. Do not enter units.
A 3.0-cm-diameter parallel-plate capacitor with a spacing of 0.300 mm is charged to 500 V. What is the total energy stored in the electric field
A 58.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.480, respectively. What horizontal pushing force is required to just start the crate moving
A motorist drives south at 22 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 30 m/s for 1.00 min. For this 6.40 min trip, find out the following values.
A solid marble, a solid disk and a hoop have the same mass (M = 1.4 kg) and the same radius. What is the minimum height that the marble, disk and hoop can be released so that all three will safely make it around the loop-the loop
The supersonic aircraft Concorde has a length of 61.3 meters when sitting on the ground on a typical day when the temperature is 12. Celsuius . The Concorde is primarily made of aluminum. In flight at twice the speed of sound, friction with the ai..
An athlete executing a long jump leaves the ground at a 35° angle and travels 8.30 m. If this speed were increased by just 4.0%, how much longer would the jump be
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.260rev/s. What is the magnitude a of the resultant acceleration of a point on the tip of the blade at time t = 0.196s
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