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A hollow metal sphere has a total charge of 50 µC. If the radius of the sphere is 50 cm, the electric field intensity at a distance of 3.0 m from the surface of the sphere is approximately-----------N/C. (Careful of the wording here.)
A 500 g cart is released from rest 1.00 m from the bottom of a frictionless, 30.0 degree ramp. how far does it roll back up the ramp
Steel Piano string, The lowest note on a grand piano has a frequency of 27.5 Hz. The string is 2 m (more or less; let's just assume it is exactly 2.000 m) long, and its tension is 1000 N (again, more or less, so let's say it's exactly 1000 N).
A track athlete running at fast pace had an instantaneous resultant force of 2800 N acting through the heel during heel strike, what were the horizontal and vertical forces acting on the heel
In the circuit on the right, a light bulb, two batteries, and five resistors are wired to form a circuit. For the following question, assume the color codes on resistors are not accurate (that is, use stated values) and assume each battery has 4.75 ?..
Two identical capacitors are connected in parallel to an acgenerator that has a frequency of 740 Hz and produces a voltage of39 V. What is the capacitance of each capacitor
A lazy Susan consists of a heavy plastic disk mounted on africtionless bearing resting on a vertical shaft through itscenter. The cylinder has a radius R = 10 cm and mass M = 0.23 kg. A cockroach (mass m = 0.015 kg) ison the lazy Susan, at a dista..
As shown on the right, a uniform boom with a mass of 30.0 kg and a length of 2.00 meters is suspended at its left end by a low friction bearing and supported at its right end by a low mass horizontal steel wire of diameter 4.00 mm. A 20.0 kg mass ..
The wavelength associated with the cut-off frequency for silver is 325 nm. Find the maximum kintetic energy of electrons
A beam of light is incident from air on the surface of a liquid. find the critical angle for the liquid when surrounded by air
A machine part rotates at an angular speed of 0.40 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.76 rad/s2
two 1.5-cm-diameter disks face each other 2.0 mm apart. they are charged to plusmn 9.0 nc.part a what is the electric
How much thermal power is radiated by a light bulb when its filament is heated to 200k? Assume that the filament is a blackbody of area 1.0 cm2, At what wavelength is the radiation peaked
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