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Question: A line in the x-ray spectrum of gold has a wavelength of 18.5 pm(=18.5x10^-12 m) The emitted x-ray photons corresponds to a transition of the gold atom between two stationary states, the upper one of which has the energy -13.7 keV. What is the energy of the lower stationary state?
A cart with a mass 340g moving on frictionless linear airtrack at an intial speed od 102m/s undergoes an elasticcollisionwith an initially stationary cart of unknown mass. what is the speed of the two-cart center of mass
Two children are playing a game. The rst throws a basketball straight up, and the second tries to hit it with a thrown baseball. What is the angular impulse on the basketball
In a pan on a stove 125 g of water at 100 degrees Celsius is converted to steam. What s the entropy change of water the is now steam
Three equal positive point charges of magnitude Q = 5.00? C are located at three corners of a square of edge length d = 7.5 cm. What is the magnitude of the attractive force on the negative charge
An object is located 15 cm in front of (to the left of) a converging lens with a focal length of 10 cm. To the right of the converging lens, What is the location of the final image
The lowest note on a grand piano has a frequency of 27.5 . The entire string is 2.00 long and has a mass of 430 . The vibrating section of the string is 1.88 long. Part A What tension is needed to tune this string properly?
An air bubble at the bottom of a lake 39.00 m deep has a volume of 1.00 cm3. what is the volume of the bubble just before it reaches the surface
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a heighth=3meters and a slope of5degrees with respect to the ground. What is the total mechanical energy of the box at the top of the ramp
The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Calculate the pressure due to the ocean
A proton with v = 322 m/s is moving through a region in which the magnetic field is B = 2.2 T, what angle does the protons velocity make with B
A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 137 V, What are the two elements
Write the introduction of about two pages and the literature review parts of two or three pages about fundus camera.
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