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A spiral staircase winds up to the top of a tower in an old castle. To measure the height of the tower, a rope is attached to the top of the tower and hung down the center of the staircase. However, nothing is available with which to measure the length of the rope. Therefore, at the bottom of the rope a small object is attached so as to form a simple pendulum that just clears the floor. The period of the pendulum is measured to be 10.8 s. What is the height of the tower?
What is braking distance for the first train
Using a 10 percent cost of capital, Smith capitalized the lease on January 1, 2007, in the amount of $125,096. Illustrate what is the amount of current portion of the lease liability Smith should report on the December 31, 2007, balance sheet?
two conducting spheres, one of radius 6.0 cm, and the other of radius 120 cm, each have a charge of 20 nC, calculate the surface charge density of each sphere
A tube is open only at one end. A certain harmonic generted by the tube has a frequency of 470Hz. The next higher harmonic has a frequency of 555Hz. The speed of sound in air is 343m/s.
Which is cheaper for the company: to buy or lease real estate? Show your computations. Illustrate what non-quantitative factors should the management consider when making the decision?
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
Mrs. Smith has returned to work and feels well. She does not know why she needs to have periodic blood tests due to the warfarin. What is your explanation to Mrs. Smith.
Two simple pendulums have length of 81-cm and 64-cm they are released from the same angular position at the same instant. After how much time would they both arrive at their initial position simultaneously.
An infinitely long line of charge has a linear charge density of 8.00×10-12 C/m. A proton is at distance 16-cm from the line and is moving directly toward the line with speed 1200 m/s.
Two narrow slits 41 µm apart are illuminated with light of a wavelength 604 nm. What is the angle of the m=3 bright fringe in degrees.
Two cylindrical bars, each with diameter of 2.50 cm, are welded together end-to-end. One of the original bars is copper and is 0.360 m long, What is the resistance between the ends of the welded bar at 20 oC
A sudden gust of wind gives the boat an acceleration a, What is the boat's direction 6.4s later when the gust subsides
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