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In living tissue, about one out of every 10-12 carbon atoms are the 14C isotope. If you were to discover a human bone with a 14C occurrence of one out of every 10-14 atoms, how long ago did the owner of the bone die? 14C has a half life of approximately 6000 years.
Consider a Hydrogen atom with the electron in the n = 8 shell. What is the energy of this system, How many electrons would fit in this main shell
Over a year's time, a person receives a biologically equivalent dose of 21 mrem (millirems) from cosmic rays, What is the person's absorbed dose in rads
Coherent light of frequency 6.40×1014Hz passes through two thin slits and falls on a screen 89.0cmaway. How far apart are the two slits
question1. a runner is running on a circular track that is 200 m in circumference. find out the magnitude of his
A nonreflective coating (n = 1.35) covers the glass (n = 1.52) of a camera lens. determine the minimum nonzero thickness that the coating can have
A 200 W speaker is playing at full power. The speaker is at the center of a 1 m radius spherical chamber. What is the total sound power that reaches the walls
A ski gondola is connected to the top of a hill by a steel cable of length 680 m and diameter 1.5cm. As gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along cable. It is observed that it took 14 s for the p..
A steel guitar string 40 cm long has a mass density of 1.5 g/m and the tension is 500 N. Find the frequency of the second harmonic
A 16 cm x 16 cm square loop of wire lies in the xy-plane with its bottom edge on x-axis. The resistance of the loop is 0.490 ohms. A magnetic field parallel to the z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds...
A loud speaker is playing rock music. Consider the sound from it as a spherical wave. what is the sound intensity level
At what angle does it leave the field region?
A softball having a mass of 0.45 kg is pitched horizontally at spring with spring constant 78 N/m. how fast was the softball moving initially
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