What is the percentage gold composition of the coin
A U.S. $20 gold piece has a mass of 33.44 grams and displaces 1.935 cm^3 of water. If the coin is known to consist of only gold (Pau = 19.3 g/cm^3) and copper ( Pcu = 8.9 g/cm^3), what is the percentage gold composition of the coin?
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A 2.00 -long, 480 rope pulls a 6.00 block of ice across a horizontal, frictionless surface. The block accelerates at 2.00 . How much force pulls forward on (a) the ice, (b) the rope?
A dragster comes off the start line with an acceleration of 4 m/s2. The acceleration increases uniformly from 4 m/s2 to 10m/s2 over 3 seconds, then remains constant to the finish line (500m). Find: the velocity as a function of time.
A group of researchers conducted an experiment to determine which vaccine is more effective for preventing getting the flu. They tested two different types of vaccines: a shot and a nasal spray.
A mass of 6 kg moving horizontally with velocity v impacts the top of the post. Determine the largest speed for which the maximum normal stress in the pipe does not exceed 180 MPa.
The inner sphere has a net charge of Q1 = 4.70 µC, and the outer spherical shell has a net charge of Q2 = -8.30 µC. What is the surface charge density, sb, on the inner surface of the outer spherical conductor?
Audits. Between quarterly audits, a company checks its accounting procedures to detect problems before they become serious. The accounting staff processes payments on about 120 orders each day. The next day a supervisor checks 10 of the transactio
A new extended-life light bulb has an average service life of 770 hours, with a standard deviation of 51 hours. If the service life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 524
Write an expression for the conduction heat rate, qx(x). Use this expression to determine the temperature distribution T(x) and qualitatively sketch the distribution for T(0) > T(L).
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