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A source has a half life of 30.2 years. It was created 19 years ago with an initial activity of 1 micro curie. Calculate the initial number of atoms in the sample and the original mass of the sample?
One fragment, whose speed immediately after the explosion is zero, falls vertically. Illustrate what is the horizontal speed of the other fragment?
If a freight train can accelerate at 0.050 m/sec2, how far must it travel to increase its speed fro 2.0 to 8.0 m/sec?
Find out the critical angle for the glass-synthetic interface (same as for the glass-diamond interface). Sketch a picture of the incoming ray as it interacts will all subsequent interfaces.
A 650 kg weather balloon is designed to lift a 4600 kg package. What volume should the balloon have after being inflated with helium 0 degrees Celsius and 1 atm pressure to lift the total load.
In a physics lab experiment, a student immersed 201 one cent coins (each having a mass of 3.00) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.240 of water at 20 in an insulated contai..
A guitar string is 91.00cm long and has a mass of 3.6g. From the bridge to the support post (= L) is 60 cm, and the string is under a tension of 551 N.
You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
An artillery shell is fired with an initial velocity of 300 m/s at 51.0° above the horizontal. To clear an avalanche, it explodes on a mountainside 47.0 s after firing. Illustrate what are the x and y coordinates of the shell where it explodes, re..
Suppose you were to wrap the planet Mars in aluminum foil and place a charge Q on it, What is the capacitance of Mars in this case
Find the von Mises stress (in MPa) at the location of the strain gages.
An electric field applies a force of 9.11x10^-16 N to an electron emitted from a cathode of a cathode ray tube at essentially zero velocity
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. Find the volume of the cylinder. Calculate the probable percent error in the length. Calculate the probable percent error..
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