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A positive charge of 1.100e-6 C is placed in a uniform field of 1.20e-5 N/C. A negative charge of -0.100e-6 C is brought near enough to the positive charge that the attractive force between the charges just equals the force on the positive charge due to the field. Calculate how close are the two charges?
the observer is positioned so that the far edge of the bottom of the empty glass is just visible. when the glass is
A person bounces up and down on a trampoline, while always staying in contact with it. What is the maximum speed attained by the person
A roof-top solar water heater collects 50% of the 200 W/m^2 provided by the sun, using absorbers with a total area of 30m^2. If water enters the system at 15(C), how many hours will be required to warm 150kg of water to 60(C) using this heater? (Y..
A student stands at the edge of a cliff and throws a stonehorizontally over the edge with a speed of 27 m/s. The cliff is 53 mabove a flat, horizontal beach as shown in the figure below. What are the coordinates of the initial position of the ston..
The transformer in the power supply for a computer's 500-GB external hard drive changes a 120-V input voltage, what is the current in the primary and secondary when the drive is in operation
Structure Polar's acquisition problem as a decision tree and solve (using EMV criteria) for the optimal decision strategy for Polar.
A point source of light is submerged 2.2 meters below the surfaceof a lake and emits rays in all directions. What is the maximum radius that this circle could have
A 5.0 kg wooden block is placed on an adjustable wooden inclinedplane. (hint: For wood onwood, μs is approximately .58and μk is approximately .40 .) What is the angle of incline above which the block will startto slide down the plane?
Two moles of a monatomic gas with an rms speed of 294 m/s are contained in a tank that has a volume of 0.12 m3. If each gas particle has a mass of 8.220 × 10^-26 kg, what is the temperature and absolute pressure of the gas?
The drawing shows three identical springs hanging from the ceiling
A marble is thrown horizontally by a speed of 16 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle 50° with the horizontal. From what height above the ground was the marble thrown?
a boy throws a ball upward from the top of a tower with a speed of 12ms. on the way down it just misses the thrower and
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