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To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. She finds that the specimen weighs twice as much in air as it does in water. The density of the solid part of the specimen is 3.7 × 103 kg/m3. What fraction of the specimen's apparent volume is solid?
A bucket of water with a mass of 6.0 kg is attached to a rope that is wound around a cylinder. What is the acceleration of the bucket
A bouncy ball is dropped from a heigh h above a floor. If every bounce robs the ball of 6.7% of its kinetic energy just before the bounce, how high will it reach before its eleventh bounce
One of the strings on a violin has a tension of 70 N and a linear mass density of 6 g/s. Find the speed of transverse waves on this string
Record the resistance and current values calculated in questions 5, and load the numbers into a spreadsheet. Make a plot of the current I as a function of the total resistance R. (Remember that the R values will go on the x-axis and the I values o..
A battery having an emf of 11.10 V delivers 102 mA when connected to a 61.0 load. Find out the internal resistance of the battery.
A hockey puck is swung at the end of a very slight 30 cm long string in a horizontal circle. what is the tension force supplied by the string
In reality, the COP of the heat pump will only be 60 percent of the ideal value. What is the minimum power of the electric motor when the COP is 60 percent of the ideal value
After being accelerated to a speed of 1.62×105m/s , the particle enters a uniform magnetic field of strength 1.00T, Find the ratio m/q for this particle
A rod 20 cm long moves in a plane perpendicular to a magnetic field of 0.065 T. The velocity of the rod is perpendicular to its length. Find the speed of the rod if the potential difference between the ends is 6.9 V. ____________ m/s
A flywheel having constant angular acceleration requires 4.6-{rm s} to rotate through 162 rad. Its angular velocity at the end of this time is 100 rad/s. Find out the angular velocity at the beginning of the 4.6s interval; the angular acceleration..
What is the smallest thickness of a soap film (n=1.40) that would appear black if illuminated with 470nm light? Assume there is air on both sides of the soap film
An ideal gas's initial conditions are 1 mol, a pressure of 271.7 kPa, an internal energy of 624 J and a volume of 0.8 L. The gas is allowed to expand quasi-statically at constant pressure to a volume of 6.9 L. It is then cooled at constant volume unt..
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