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It takes sound waves of frequency 500 Hz 14.7 ms to make a round trip through a hollow pipe of length 7.5 m filled with helium. What is the speed of sound in helium?
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Question: A point charge of magnitude q is at the center of a cube with sides of length L. a) What is the electric flux through each of the six faces of the cube? b) What would be the flux through a face of the cube if i ...
Question: Planet X orbits the star Omega with a "year" that is 180 earth days long. Planet Y circles Omega at four times the distance of Planet X. How long is a year on Planet Y in earth days? The response must be typed, ...
Question: A small object A, electrically charged, creates an electric field. At a point P located 0.250m directly north of A, the field has a value of 40.0N/C directed to the south. What is the charge of object A? If a s ...
Question: A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed. What is the ratio of the car's apparent weight to its true weight? The response must be typed, single spaced, must b ...
Question: The total translational kinetic energy of the molecules of a sample of gas at 421 k is 3.95x10^4j. How many moles does the sample comprise? Find the average translational kinetic energy of a single molecule. Th ...
Need help answering this question The ancient Egyptians used simple machines to build the pyramids. Discuss how you might use one or more of the simple machines to move the massive stone blocks up the growing pyramid, an ...
Question: At t=0 a grinding wheel has an angular velocity of 30.0rad/s . It has a constant angular acceleration of 27.0rad/s^2 until a circuit breaker trips at time t = 1.60s . From then on, it turns through an angle 433 ...
The first modern Olympics of 1896 had a marathon distance of 40 km. In 1908, for the Olympic marathon in London, the length was set at 42.195 km to provide the Royal Family with a better view of the race. Other distances ...
Question: A 30.0kg- box is being pulled across a carpeted floor by a horizontal force of 230N, against a friction force of 210N. What is the acceleration of the box? How far would the box move in 3s, if it starts from re ...
Question: Suppose you have a block resting on a horizontal smooth surface. the block (mass m) is attached to a horizontak spring (spring constant k) which is fixed at one end. the mass is pulled to one side and released. ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
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Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As