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A spherical oil droplet with nine excess electrons is held stationary in an electric field between two large horizontal plates that are 2.25 centimeter apart. The field is produced by maintaining a potential difference of 0.3375 kV across the plates, and the density of the oil is 824 kg/m3. Determine what is the radius of the oil drop? (e = 1.60 x 10-19 C).
A particular radioactive source produces 150 mrad of 2 MeV gamma raysper hour at a distance of 1.0 m. How long could a person stand at thisdistance before accumulating an intolerable dose of 1 rem
An 80 kg stuntman jumps from a window of a building situated 30 m above a catching net. determine his velocity just before he hits the net
a centrifuge in a medical laboratory rotates at an angular speed of 3550 revmin. when switched off it rotates through
An unknown gas is introduced into the aforementioned apparatus using the same tuning fork, and the first resonance occurs when the air column is 6.14 cm long. Find the speed of sound in the gas. m/s
A Van de Graaff accelerator is essentially a parallel plate capacitor. Such a machine is changed by an electrical potential of 2.5 x 10^6 volts. What is the energy density stored in the field
Two bugs are buzzing with the same frequency of 186Hz. One of the bugs is flying away from a stationary observer at 9.0m/s, What is the beat frequency that the observer hears
question a series rcl is at resonance and contains a variable resistor that is set to 175 ohms. the power delivered to
an electric dipole consists of 1.30g spheres charged to -1.90nc at the ends of a 8.00cm -long massless rod. the dipole
A horizontal laser beam by wavelength 660nm passes through a rectangular glass prism (with a vertex angle of 33.5 degrees) and is deflected 22.7 degrees below the horizontal. a) Discover the angle of refraction b) Compute the index of refraction of t..
An old-fashioned (vinyl) record rotates at a constant rate of 45 rpm. how far does a point on the edge travel
An astronaut constructs a pendulum with a length of 1 meter on a new planet. If the period is 3 second, what is the acceleration due to gravity
A spaceship is visiting Planet X. While descending to the surface, its rockets produce 25 kN of upward thrust and the spaceship's speed decreases at a rate of 0.15 m/s2. What is the mass of the spaceship
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