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In a hydraulic system, the piston on the left has a diameterof 5.1 cm and a mass of 1.7 kg. The piston on the right has adiameter of 12 cm and a mass of 2.7 kg. If the density of the fluidis 750 kg/m^3, what is the height difference between the two pistons?
What is the wavelength of emitted photon of the previous question if k = 10eV/ °A2, where °A denotes Angstrom and eV: electron volt. Is the emitted photon in visible spectrum of a human eye.
A molecule of DNA (deoxyribonucleic acid) is 2.28 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Determine the effective spring constant of the molecule
The ultracentrifuge is an important tool for separating and analyzing proteins. Because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite si..
In a railroad yard, a 3.5×10^4 kg boxcar moving at 6.0 m/s is stopped by a spring-loaded bumper mounted at the end of the level track
Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke's law. Find the force constant of this tendon in N/m
A 100 W light bulb has a resistance of about 12 ohms when cold (20 degrees C) and 140 ohms when hot. Estimate the temperature of the filament
During takeoff, an airplane climbs with a speed of 160 m/s at an angle of 24 degrees above the horizontal. How fast is the shadow of the plane moving along the ground
The displacement vectors 46.0 cm at 15.0° and 23.0 cm at 53.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
a physics student wants to build a spring gun that when aimed horizontally will give a 35 g ball an initial acceleration of g by releasing a spring that has been compressed 11 cm
Two comets, each of mass 6500 kg and traveling 87 m/s in opposite directions, collide head-on and come to rest. How much energy is produced in this collision
An alpha particle is a helium nucleus that consists of two protons bound with two neutrons. What is the alpha particle's speed
Two parallel plates having charges of equal magnitude but opposite sign are separated by 24.0 cm. Determine the force on the proton
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