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Q. When a guitar string is sounded along with a 436 Hz tuning fork, a beat frequency of 5.00 Hz is heard. When the same string is sounded along with a 434 Hz tuning fork, the beat frequency is 7.00 Hz. What is the frequency of the string?
Q. A space station, in the form of a wheel 170 m in diameter, rotates to provide an "artificial gravity" of 9.4 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of rotation of the wheel (in revolutions per minute) that will produce this effect.
Two charged pith balls are suspended on very light 10.7 cm strings. Each has a mass 11.0 g. In stability, the total angle between the strings is 37 degrees. Draw the free body diagram for one of the pith balls and clearly label all forces with magnit..
A body travels a distance of 3km towards east and 4 km towards north and finally 9 km towards east. what is the total distance travelled and displacement of body.
What are the rocket's horizontal range, greatest height, and total time of flight. The magnitude of the torque of this force on the door with respect to the hinge is most nearly .
A 1200kg car rounds a curve of radius 65 m banked at an angle of 14degrees. if the car is traveling at 30km/hr, will a friction force be required? if so, how much and in what direction.
A U tube is filled with water, and the two arms are capped. The tube is cylindrical, and the right arm has twice the radius of the left arm. The caps have negligible mass, are watertight, and can freely slide up and down tube.
What is the strength of an electric field at a distance r from the center, inside the sphere. Assume the sling thrower could gradually increase the speed of the stone.
Regarding the Earth and a cloud layer 750m above the Earth as the "plates" of a capacitor, calculate the capacitance. Suppose cloud layer has an area of 1 km2 and that the air between cloud and ground is pure and dry.
A pump, submerged at the bottom of a well that is 35m deep, is used to pump water uphill to a house that is 50m above the top of the well, as shown above. The density of the water is 1000 kg/m3. All pressures are gauge pressures. Top of well pipe to ..
The coefficient of kinetic friction
A vessel whose walls are thermally insulated contains 2.10 of water and 0.450 of ice, all at the temperature of 0 . The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water.
A particle undergoes a displacement Δr of magnitude 57 m in a direction 25° below the x axis. Express Δr in terms of the unit vectors x and y.
A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed un..
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