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a. List all the possible set of quantum numbers for a hydrogen atom with n=3.
b. What is the electrons total energy?
c. What is the maximum value of L?
A horse canters away from its trainer in a straight line, moving 150m away in 14 sec. It then turns abruptly and gallops halfway back in 4.5 sec.
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 8.48 x10^7 km. Radio waves travel at the speed of light (3.00 x10^8 m/s). How many seconds does it take for the signal to reach the Earth.
Calculate the force a piano tuner applies to stretch a steel piano wire 7.70 mm, if the wire is originally 0.850 mm in diameter and 1.30 m long
Two lenses that are L = 42 cm apart are used to form an image, as shown in figure. Find the distance from lens and magnification of the image.
A cylindrical container of inside diameter 0.6 m is filled with gasoline to a depth of 2 m. What is the mass of the gasoline?
After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the cooler contained 7.20 kg of ice and the temperature of the ground was 40.5°C, calculate the energy that is required to melt all the ice at 0°C. Th..
What is the speed of crate hit ground
Suppose that the separation between two speakers A and B is 3.20 m and the speakers are vibrating in-phase. They are playing identical 121-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker B in..
An owl is chasing a squirrel and is using echolocation (the reflection of sound) to aid in the hunt. If the squirrel is 40.5 m from the owl, how long does it take sound to travel from the owl to the squirrel and then back to the owl? (Use 343m/s a..
Two parallel wires of length 17 m are separated by a distance of a = 0.13 cm, What is the magnetic force on each wire
A spring with an unstrained length of 0.074 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling, What is the magnitude of the external electric field
The second person, on the opposite side of the lock, pulls at an angle of 45o. Illustrate with what force should the second person pull so that the net force on the raft is in the forward direction?
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