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A solid aluminum in got weighs 92 N in air.(a) What is its volume?(b) The ingot is suspended from a rope and totally immersed in water. What is the tension in the rope (the apparent weight of the ingot in water)?
An AC voltage source, with a peak output of 200V is connected to a 50 ohm resistor. What is the rate of energy dissipated due to heat in the resistor
The nucleus of a 125^Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q=+54e, What is the proton's acceleration
An electron moves through an electric field, and its speed drops from 2200m/s to 1000m/s, what's the potential difference between the points at which the speed was measured
What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 17km and 49km from the source, what is the ratio of the amplitudes
Each of the four circuits in the drawing consists of a single resistor whose resistance is either R or 2R, and a single battery whose voltage is either V or 2V. determine the current delivered to each resistor
An audio amplifier, represented by the AC source and the resistor R, what is the time-averaged power delivered to the speaker
A point source generating a spherical sound wave at 50Hz, Calculate the amplitude of the particle velocity at r=3m from the source
A solid, uniform disk of radius 0.250 m, Find the angular speed of the disk at the bottom of the ramp
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
A world-class sprinter accelerates to his maximum speed in 4.2s . He then maintains this speed for the remainder of a 100-{\rm m} race, What is the runner's average acceleration during the first 4.2s
When they release their arms, Al moves off in one direction at a speed of 0.689 m/s, while Jo moves off in the opposite direction at a speed of 1.10 m/s. Assuming that friction is negligible, find out Al's mas
In the Millikan oil-drop experiment, Estimate the radius of an oil drop of density 839 kg/m3 for whichits weight could be balanced by the electric force of this field on one electron
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