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A 4.3-m-tall, 50-cm-diameter concrete column supports a 1.0×105{\rm kg} load.
By how much is the column compressed? answer in mm
You and your surfing buddy are waiting to catch a wave a few hundred meters off the beach. The waves are conveniently sinusoidal, What is the frequency of the waves, Find the speed of the waves
You throw a 13.0N rock into the air from ground level and observe that, when it is 13.0m high, Use the work-energy principle to find the maximum height the rock will reach
A 57.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.770 and 0.405, What horizontal pushing force is required to just start the crate moving
If linear momentum is conserved when there is no external force applied, how is angular momentum conserved
A molecule of DNA (deoxyribonucleic acid) is 2.07 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
The power of lightbulb is 100 Watts. I found the intensity of lightbulb which is about 812 Watt/m^2. Using these information, find the intensity of the Sun
Setting a world record in a 100m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.0 s. Accelerating uniformly, Maggie took 2.0 s and Judy 2.5 s to attain maximum speed that they maintained for the rest of race.
5 kg of water at 60 degrees are put in contact with 1 kg of ice at 0 degrees and are thermally isolated from everything else. What is the change in entropy of the universe while the ice melts
A bullet with mass m and speed v is fired at a ballistic pendulum bob of mass M. The bob is attached to a thin, light rod of length L, hangs vertically initially, and is attached to a pivot at its top end.
In constructing a large mobile, an artist hangs an aluminum sphere of mass 6.0 kg from a vertical steel wire 0.50 m long, compute the tensile Strain and elongation
Consider a spherical Gaussian surface and three charges: q1 = 1.62?C , q2 = -2.45?C , and q3 = 3.57?C . Find the electric flux through the Gaussian surface
A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power, estimate the necessary length of wire
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