Physics, 04.09.2019 03:20 sundayrider101
In an electron microscope, electrons are accelerated to great velocities. calculate the wavelength of an electron traveling with a velocity of 7.0 x 106 ms-1. the mass of an electron is 9.1 x 10-28 g.
Answers: 1
Physics, 21.06.2019 16:40
Aforce of 34.5 newtons is applied to an object at an angle of 45 Âş with the horizontal. what is the force acting on the object in the horizontal direction?
Answers: 2
Physics, 21.06.2019 22:30
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 Ă— 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.
Answers: 1
Physics, 22.06.2019 00:30
What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds
Answers: 1
Physics, 22.06.2019 03:00
Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?
Answers: 3
In an electron microscope, electrons are accelerated to great velocities. calculate the wavelength o...
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