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1) the positronium atom consists of an electron positron pair bound by their Coluomb potential
a) find the energy of the ground state and caluclate the averge distince between the electron and the position in the ground state
b) if the view the particales as moving in a classical circular orbit what is the radius of the orbit?
Tarzan swings on a 31.0m vine initially inclined at an angel of 28.0 degrees to the vertical. What is his speed at the bottom of the swing if he pushes himself with a speed of 2.5m/s
A motorcycle daredevil plans to ride up a 2.50m high 25.0° ramp, sail across a 10-m-wide pool filled with hungry crocodiles, and land at ground level on the other side.
A beam of gamma rays from a distant galaxy is observed through two polarizing filters whose transmission axis is at a 45 degree angle relative to each other here on earth
For this experiment you will require a stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
A converging lens with a focal length of 6.60cm forms an image of a 3.20mm -tall real object that is to the left of the lens. Where are the object and image located
An AC generator supplies an rms voltage of 115 V at 50.0 Hz. It is connected in series with a 0.500 H inductor, What is the rms current through the resistor
Two children setup a "telephone" by placing a long, slender aluminium (Y = 6.9 × 1010 N/m2) bar that has a length of 6.1-m between their two houses. To communicate, the child taps a coded message on one end. How long do the sound waves take to reach ..
On a safari, you are spearfishing while wading in a river. You observe a fish gliding by you. If your line of sight to the fish is 64.0° below the horizontal in air, and suppose the spear follows a straight-line path through the air and water afte..
Two capacitors connected in parallel produce an equivalent capacitance of 40.0?F, What is the individual capacitance of each capacitor
A shel is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. Determine the initial speed of the shell
System A consists of a mass attached to a spring with a force constant ; system B has a mass 2 attached to a spring with a force constant ; system C has a mass 3 attached to a spring with a force constant 6; and system D has a mass attached to a s..
The force component along the displacement varies with the magnitude of the displacement, Find the work done by the force in the interval
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