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One end of a cord is fixed and a small 0.460 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m as shown in the figure below. When theta is 19 degrees, the speed of the object is 6.40 m/s. At this instant, find each of the following
a. the tension in the string
b. the tangential and radial components of acceleration
c. the total acceleration
d. Is the answer changed if the object is swinging down toward its lowest point instead of up? Yes or no.
A submarine is 325 m horizontally out from the shore and 115 m beneath the surface of water. A laser beam is sent from the submarine so that it strikes the shore.
A rotating cylinder about 25 km long and 9 km in diameter is designed to be used as a space colony. with what angular speed must it rotate so that residents on it would experience the same acceleration due to gravity as on earth? In radians per se..
A toy is made with three equal masses of 100 grams in the vertices of an equilateral triangle of side 7 cm. Determine the position of the center of mass of this object
A point charge 4.20 mu C is held fixed at the origin. A second point charge 1.60 mu C with mass of 2.80×10-4 kg is placed on the x axis, 0.280 {rm m} from the origin. The second point charge is free from rest. What is its speed when its distance f..
A proton moves perpendicular to a uniform magnetic field Barrowbold at a speed of 1.20 107 m/s, Determine the magnitude and direction of the field
A 0.10g honeybee acquires a charge of 25pCwhile flying, What is the ratio of the electric force on the bee to the bee's weight
If a car travelling at 30m/s will skid 18.00 m when its brakes lock and the car slides, how far would it skid if it is travelling at 40 m/s when its brakes lock? (This question is typical on some driver's license exams. Note: 10 m/s = 22 mph)
Two- people- are -talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 Ã- 10-7 W/m2. What sound intensity does the other student measure
A 67? resistor, an 9.0?F capacitor, and a 36mH inductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
Radiation can supplement the energy needs of a home's water heater, Find what volume of water can be heated per hour from a temperature of 16.0oC to a temperature 61.0oC
A particle moving in a straight line with constant accelaration - Find the velocity of particle at the mid point of the path.
A wire loop of radius 0.3 m lies so that an external magnetic field of magnitude 0.30T is perpendicular to the loop. The filed reverses its direction, and its magnitude changes to 0.20T in 1.5s. Find out the magnitude of the average induced emf in..
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