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An experiment is set up in a copper calorimeter of mass 82 g containing 841 g of water at 17.5 degrees C. An iron ball with a mass of 457.6 g is heated to an initial temperature of 413.7 degrees C and added to the water in the calorimeter. What is the equilibrium temperature of the mixture?
Bob is strapped to a board that is moving so that ? along the length of the board is 2.0. The board and direction of relativistic motion is along the horizontal. You are standing next to a hole on a horizontal platform that he hopes to pass throug..
A plucked guitar string produces a sound wave of frequency 440 Hz. What is the wavelength of the sound wave
Gas is contained in a 6.00-L vessel at a temperature of 21.0°C and a pressure of 8.00 atm. Determine the number of moles of gas in the vessel
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
A radioactive isotope has an activity of 8.09 mCi. After 3.05 hours the activity is 6.31 mCi. What is the half-life of the isotope?
A two-slit arrangement with 60.3 um separation between the slits is illuminated with 491.0 nm coherent light. find the distance from the first dark fringe on one side of the central maximum to the second dark fringe on the other side
Two traveling sine waves, identical except for a phase difference of phi, What is the phase difference between the two waves
The parallel plates in a capacitor, with a plate area of 5.80 cm2 and an air-filled separation of 4.90 mm, are charged by a 8.10 V battery. They are then disconnected from the battery and pulled apart (without discharge) to a separation of 6.70 mm..
q1. a 62.6-kg chandelier is suspended 1.5 m below a ceiling by three wires each of which has the same tension and the
At t=1.0 second, a 0.46 kilogram object is falling with a speed of 5.5 m/s. Find what is the speed of the object at t=2.0 s
A parabolic velocity profile is desired at the end of a 10-m-long, 8-mm-diameter tube attached to a tank filled with 20-C water. An experiment is run during which 60 L is collected in 90 min. Is the laminar flow assumption reasonable? If so, would..
Suppose that it takes 15.8 hours to drain a container of 97.8 m3 of water. What is the "mass flow rate," of water from the container
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