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Four charges Q are located at the corners of a square of sides. What is the electric potential at the center of the square?
An electron is accelerated by the voltage 500v. What is the kinetic energy of the electron after acceleration
A particle of mass m moving in one dimension has a potential V(x) which is a shallow square well near the origin:
A house has well-insulated walls. It contains a volume of 105 m3 of air at 305 K. Calculate the energy required to increase the temperature
two blocks are suspended over a pulley. The pulley can be treatedas a uniform solid cylindrical disk. find the mass of the pulley
The table gives the total U.S. expenditures (in billions of dollars) for health services and supplies for selected years from 2000 and projected to 2018.
The starter motor of a car engine draws a current of 160A from the battery. The copper wire to the motor is 4.80mm in diameter and 1.2 m long. How much charge passes through the starter motor
What is the acceleration due to gravity on the surface of that planet?
A reflecting, spherical Christmas tree ornament has a diameter of 20 cm. A child looks at the ornament from a distance of 40 cm. define the image she sees. Where is the image locate.
A child throws a snowball with a horizontal velocity of 18m/s directly toward a tree, from a distance of 9m and a height above the ground of 1.5m.
a 210 g bucket containing 12.5 kg of water is hanging from a steel guitar string with mass m 8.58 g density p 7750
The ground-state wavefuntion of a hydrogen atom is Y=(1/((pi)a^3))^(1/2)*e^(-r/a) where a=bohr radius. a) calculate probability that the electron will be found within a small sphere of radius 1pm on the nucleus. b) no what if the sphere is at r=a. Wh..
In a single-slit experiment, light of wavelength 500 nm is used to produce a diffraction pattern on a screen 4.0 m away. what is the slit width
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