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In a classic model, the electron of a hydrogen atom circles the proton at a radius of 1.3225x 10-9 m when it is in the n=5 state. What is its electric potential energy?
Four identical charges (+2.5μC each) are brought from infinity and fixed to a straight line. The charges are located 0.40 m apart. Determine the electric potential energy of this group.
A 45.6-kg girl is standing on a 155-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. The girl begins to walk along the plank at a constant velocity of 1.40 m/s relative to the plank. (a) What is the ve..
Find the magnitude of the electric field at a point inside the sphere, 0.106 m below the surface.
When a person inhales, air moves down the bronchus (windpipe) at 14 cm/s. determine the pressure drop in the constriction
Raindrops are falling straight down at 12 m/s when suddenly the wind starts blowing horizontally at a brisk 4.0 m/s. From your point of view, the rain is now coming down at an angle. What is the angle
suppose the charge q2 can be moved left or right along the line connecting the charges q1 and q3. given that q 17
In an EM wave the electric field oscillates 4 X 10^14 HZ at in the North - South direction. In what direction is the magnetic field oscillating
A crate of mass 14.0 kg is pulled upa rough incline with an initial speed of 1.50 m/s. How much mechanical energy is lost due to friction
a computer monitor accelerates electrons and directs them to the screen in order to create an image. if the
Suppose traffic investigators determined from the skid marks that two cars came to rest with a displacement of 9.72m at 72 degrees N of E, and the coefficient of friction was 0.72. The red car had a mass of 1000kg but the blue cars mass was 1300kg..
A crate with mass 32.0 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 156N. What acceleration is produced
What is the mass of the block on the left. Find this angle of the thread.
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