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What evidence is there to support the idea that the strong nuclear force is stronger than the electric force? How does the diameter of an atom compare with that of its nucleus? What do the letters Z, A, and N in nuclear notation stand for?
If a visible photon with wavelength 434 nm is emitted from an atom in a hydrogen gas lamp, what energy state was the atom in before the photon was emitted? That is, what was the number for that state?
A string is wrapped tightly around a fixed pulley that has a moment of inertia of 0.0352 kg m2 and a radius of 12.5 cm. The string is pulled away from the pulley with a constant force of 5.00 N. As the string unwinds the pulley begins to rotate. What..
In physics we were told that gravity pulls up down and that a chair for instance pulls up and that the forces balance each other out buy how can a chair have a force i find this a little confusing. Can any1 help?
Two cars approach an ice-covered intersection. One car, of mass 1.27 103 kg, is initially traveling north at 12.1 m/s, Find the velocity of the center of mass of the two-car system just after the collision
Find the acceleration of the driver, assuming he is held in his seat by a seat belt and assuming that the acceleration is constant.
At an amusement park, a swimmer uses a water slide to enter the main pool. what is her speed at the bottom of the slide
There are four charges, each with a magnitude of 2.0μC. Two are positive and two are negative. The charges are fixedto the corners of a 0.30 m square, one to a corner, in such a waythat the net force on any charge is directed toward the center oft..
A certain centrifuge produces a centripetal acceleration of magnitude exactly 1180g at a point 10.2 cm from the axis of rotation. Discover the number of revolutions per second.
A weight lifter raises a 1109 N weight a vertical distance of 1.60 m in a time interval of 1.75 s. Compute the power provided by the weight lifter's force
The current in a 69-? resistor is 0.15 A. This resistor is in series with a 37-? resistor, and the series combination is connected across a battery. What is the battery voltage
The horizontal constircted pipe, can be used to meausre flow velocitites in an imcompressible fluid. Find the speed of the fluid near the right hand
An airtight box has a removable lid of area 2.46 × 10-2 m2 and negligible weight. find the magnitude of the force required to pull the lid off the box
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