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An electron acquires 7.95×10-16J of kinetic energy when it is accelerated by an electric field from plate A to plate B. What is the potential difference between the plates? Which plate is at the higher potential?
Calculate the probability of an electron in the ground state of the hydrogen atom being inside the region of the proton. (For purposes of calculation, use a proton radius r = 0.990e-15 m. Hint: Note that r
Two lightweight rods 24 {rm cm} in length are mounted perpendicular to an axle and at 180 ^circ to each other. At the end of each rod is a 480 {rm g} mass. The rods are spaced 42 {rm cm} apart along an axle. The axle rotates at 4.90 rad/s.
A race driver has made a pit stop to refuel. After refueling,he leaves the pit area with an acceleration whose magnitude is6.3 m/s2; how much time is required for it to catch the other car
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
Red light travels at 2.07×108 m/s in a particular type of oil. What is the index of refraction for red light in the oil
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
The isotope of lithium used in a hydrogen bomb is Li-6, whose nucleus contains 3 protons and 3 neutrons. When a Li-6 nucleus absorbs a neutron, a nucleus of the heaviest hydrogen isotope, tritium (H-3), is produced.
Four 8.5 kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the total gravitational force
The length of a simple pendulum is 0.87 m and the mass of the particle (the "bob") at the end of the cable is 0.21 kg. What is the angular frequency of the motion
Imagine two Einstein solids in thermal contact. A has 300 atoms and B has 200 atoms, and qtotal = 100, what is the equilibrium macrostate
the concept of thermionic emission is the basis of modern x-ray tubes which are the workhorse of a medical x-ray image.
A 220 block on a 52 long string swings in a circle on a horizontal, frictionless table at 95.What is the speed of the block? What is the speed of the block.
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