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A hypothetical neutral atom has 93 electrons and a nucleus of mass m = 2.23e-25 kg. One of its electrons is held in a circular orbit of radius r = 5.5e-10 m by electrostatic attraction between the electron and the nucleus.
a) Calculate the speed of orbit of this electron.
________ m/s
A projectile is launched at an angle of 34^{\circ} above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. What is the initial kinetic energy of the projectile
A heat that goes into a particular carnot engine is 4.72 times greater than the work it performs. What is the engines efficiency
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Two positive charges of 7.40 micro-Coulombs are placed on a horizontal surface with a coefficient of static friction 0.72. If they are originally far apart.
A 310-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,150 A, how many years does it take one electron to travel the full length of the cable
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a cicuit with a 112.0 m aluminum wire, with a diameter of 0.182 mm, what is the potential difference applied to the circuit after the wire is cooled
A pilot knows a 7.00 km distance lies between two landmarks A and B on the level ground below. When he is over landmark A, What is the airplanes altitude
find out the magnitude of their acceleration. If the blocks move determine the magnitude of the tension in the string. If the blocks do not move determine the sum of magnitude of the forces of friction acting on the blocks. Show all the work.
what was the initial speed given to the rock. A light plane is headed due south with the speed of 154 km/h relative to still air. After 1.06 hour, the pilot notices that they have covered only 127km and their direction is not south but southeast (4..
What is the physics behind everyday sayings
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