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(a) A hydrogen atom has its electron in the n = 2 level. The radius of the electron's orbit in the Bohr model is 0.212 nm. Find the de Broglie wavelength of the electron under these circumstances.
(b) What is the momentum, mv, of the electron in its orbit?
On Earth, you swing a simple pendulum in simple harmonic motion with a period of 1.6 seconds. What is the period of this same pendulum on the Moon?
An elevator has a mass of 1200Kg and has cables which arerated at no more than 9.82 E+04 N of tension. What is the largest load of passangers, in Kg, that it can carry safely
A professor office door is 0.91 meter wide, 2.0 meter high and 4.0 centimeter thick: has a mass 25 kilogram: and pivots on frictionless hinges. Find the least force that you need to apply to door to hold it open
Examining your image in a convex mirror whose radius of curvature is 24.6 centimeter, Compute where is the image of your nose located
a 2.6-kg shere of radius 35cm is intially rolling on a flat surface with a speed of v.40 ms. it comes to rest in 80m.
A point source of light is submerged 2.0 m below the surface of a lake and emits rays in all directions. On the surface of the lake, directly above the source, the area illuminated is a circle. What is the maximum radius that this circle could have?
The drawing shows two wires that both carry the same current ofI = 66.1 A and are oriented perpendicular to the plane ofthe paper. The current in one wire is directed out of the paper, while the current in the other wire is directed into the paper..
The upward velocity of the 5 kg block is v1 = 3 m/s when it is at a height ht = 10 m from the sandy surface. Determine time to stop the motion of the block if the average impulsive force acting on the block
Tasha has mass 20kg and wants to use a 4.0m board of mass 10kgas a seesaw. How far is she from the support point
If a curve with a radius of 87 is perfectly banked for a car traveling 67 , illustrate what must be the coefficient of static friction for a car not to skid when traveling at 84 ?
A proton is accelerated from rest through a potential difference of 0.5MV.
Rank 4 particles, from largest to smallest, the particles' speeds u1 to u4.
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