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An electron is a hydrogen atom drops from the n=6 state to the ground state. What is the frequency of the photon that is emitted?
Find the energy released in the fusion reaction 2/1H+ 3/1H? 4/2He+n. The mass of 2/1H is 2.014102 u
A thin, circular disc is made of lead and has a radius of 0.0350 cm at 20.0 °C. find out the change in the area of the circle if the temperature is increased to 625.0 °C. The coefficient of linear thermal expansion for lead is 29.0 x 10-6/C°.
An aluminium cup of 180 cm3 capacities is totally filled with glycerin at 18° C. How much glycerin (in cubic cm) would spill out of the cup if temperature of both the cup and glycerin is increased to 33° C? (The linear expansion coefficient of alumin..
A source of sinusoidal electromagnetic waves radiates uniformly in all directions. What is the electric-field amplitude at a distance of 30.0cm from the source
At a certain time an object's position was observed to be 10 meters due west. 4 seconds later the position was observed to be 5 meters due east
Evaluate the heat loss per meter for each of the combinations you can figure out. Summarize the result in a graphical way, such as a table, such that they are easy to read and understand.
In astronomy it is common to expose a photographic plate to a particular portion of the night sky for quite some time in order to gather plenty of light. For how long should Matt expose a second plate located 4.1 m from the source
Two point charges are separated by 6 cm. THe attractive force between them is 20N. What is force between them when they are separated by 9 cm? What is the equation used to arrive at this reply?
The asteroid belt circles the sun between the orbits of Mars and Jupiter. One asteroid has a period of 4.4 earth years
An RLC circuit is set up with a 350 mH inductor, a 6.8 mF capacitor and a 550 W resistor. What is the phase angle of the circuit
A charge of +2q is fixed to one corner of a square, while a charge of -1q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center of square, so the potential is zero at each of the two empty c..
calculate the radius of the circular orbit if the magnetic field is B=1.7 and the velocity is 6.3x10^6. assuming it is 1 electron
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