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A small electrically charged particle of mass m=4.0 kg experiences a force of 2.0 N if placed just outside a uniformly charged sphere (charge per unit volume is constant) of radius of r=2m. The particle is allowed to fall into a small hole into the sphere drilled along a diameter, and is observed to undergo simple harmonic motion about the center of the sphere. Find the frequency of the resulting simple harmonic motion.
Estimate the time constant in a RC circuit.
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
A 2100 kg car moving east at 10 m/s collides with a 3000 kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 35 ° north of east and at a speed of 5.03 m/s. Find the speed of the 3000 kg car before th..
A massless spring with spring constant 9.60 N/m hangs vertically. A body of mass 2.70 kg is attached to its free end and then released. Calculate the amplitude of the motion and frequency
An investigator collects a sample of a radioactive isotope with an activity of 4.4×105Bq . 72hourslater, the activity is 1.2×105Bq. What is the half-life of the sample
a. how much heat transfer is nec to raise the temp of a .200kg piece of ice from -20c to 130c including the energy
A 1.5 kg mass is moving in a circle of radius 2 m on a flat frictionless table at the end of a string. What is the angular momentum of the mass
A disk7.97cm in radius rotates at a constant rate of1160rev/min about its central axis. Determine the radial acceleration of a point on the rim
A 10.0-m long string is moved up and down with simple harmonic motion with a frequency of 33 Hz. Determine the velocity of the wave on the sting
Consider the NaCl molecule, for which the moment of inertia is 1.30 x 10-45 kg·m2. what are the allowed Raman-scattered wavelengths
After a completely inelastic collision, two objects of the same mass and same initial speed are found to move away together at 1/2 their initial speed
A sealed container of volume 0.10 m3 holds a sample of 3.0 × 1024 atoms of helium gas in equilibrium. What is the average kinetic energy of the helium atoms
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