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An anemometer for measuring wind speed consists of four metal cups, each of mass m = 140 gram, mounted on the ends of four essentially mass less rods of length R= 0.37 meter. The rods are at right angles to each other and the structure rigidly rotates at f = 12 rev/s. Treat the cups as point masses.
1) Find the moment of inertia of the anemometer about the axis of rotation?
2) Find the angular momentum of the anemometer about the rotation axis?
A ray of one color, for which n=1.51, and a ray of another color, for which n=1.6, travel through a piece of glass. What is the angle between the two rays in the glass
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A sample of air at a temp of 298K has a relative humidity of 10%. If the temp of 1.00L of this air is decreased to 273K, what will the relative humiduty be at the lower temp
a model rocket is launched straight upward with an initial speed of 60.0 ms. it accelerates with a constant upward
"Calculate the gravitational potential energy at the surface of the sun. How much would the sun have to shrink each second in order to generate the Luminosity of the sun just by converting gravitational potential energy?" The hint my teacher gave ..
A hare and a tortoise compete in a race over a straight course 1.40 km long. The tortoise crawls at a speed of 0.280 m/s toward the finish line. For how long in time was the hare stationary
Two carts with masses of 4.5 kg and 3.9 kg move toward each other on a frictionless track with speeds of 5.6 m/s and 4.3 m/s, respectively. The carts stick together after colliding head-on.
A cannonball is shot (from ground level) with an initial horizontal velocity of 41.0 m/s and an initial vertical velocity of 21.0 m/s. How far from where it was shot will the cannonball land
David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. How long will it take for Ciny to catch up to David
a 3.95 mol sample of an ideal diatomic gas expands adiabatically from volume of 0.1820 m3to 0.710m3, Determine the initial and final temperatures
A 0.2 m^3tank equipped with a pressure regulator contains 4 kg saturated mixture of water at 2 MPa. find the amount of steam that has escaped from the tank
the block diagram of the control of an electric heating system. the heater is driven from a voltage-controlled power
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