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A fancy lecture demo is shown in the figure above: an electrically charged ball of mass 0.960 grams, is suspendon a string of negligible mass in a uniform electric field of magnitude 7.64×101 N/ C. We observe that the ball hangs (stationary) at an angle of theta =15.0 o from the vertical. How much charge do you need on the ball to keep it hanging like this?
Using kinematic equations prove that if two balls are released simultaneously from a table, one with zero velocity and other with horizontal velocity, they will both reach ground at the same time.
what is the definition of the joule in terms of the basic si
question1an ideal gas expands at a constant pressure of 6.00 105 pa from a volume of 1.00 m3 to a volume of 4.00 m3 and
The small skydiver, weighing 50N, sinks 1.0m into the snow when her parachute does not open, Determine the work done by the snow in stopping the person
The temperature of the surface of a certain star is 7500K. Most hydrogen atoms at the surface of star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could e..
An ideal toroidal solenoid has a cross-sectional area of 0.500 cm^2 , a mean radius of 15.0 cm , and 1600 turns. What is the self-inductance of this solenoid?
A steel cable with total length 20m and mass 100kg is connected to two poles. The tension in the cable is 2,000N, and the wind makes the cable vibrate with a frequency of 2Hz. Calculate the wavelength of the resulting wave on the cable.
Two balls of identical mass of 1.152 kg and with identical charges placed on them hang from the ceiling on identical strings of lengths 1.310 m. If the angle with respect to the vertical that the strings form is 24.5 degrees.
A spherical blackbody radiator has a temperature of 159°C. Its radius is 0.253 m. what is the net rate of energy radiated from the sphere?
Two electrons in the atom are seperated by 1.5x10^-10 m, the typical size of an atom. What is the electric force between them? A positive and negative charge, each of magnitude 2.5x10^-5 C,are seperated by a distance of 15cm. Find the force of each..
A suspension bridge is 60.0 m above the level base of a gorge. A stone is thrown or dropped from the bridge. Neglect air resistance. Let g = 10.0 m/s2. how long does it take for it to fall to the base of the gorge
A 303 turn solenoid has a radius of 5.00 cm and a length of 22.0 cm. Find the inductance of the solenoid
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