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The components of velocity of an object moving in two dimensions are 40 m/s westward, and 28 m/s southward. What is the object's heading, in degrees? Assume headings are measured relative to north, rotating clockwise, with north being zero degrees.
An Escort and a Camaro traveling at right angles collide and stick together. What was the speed of the Camaro
Two objects each have a positive charge. The total charge on both objects is 390 µC. When the objects are placed a distance of 1.20 m apart, each exerts an electrostatic force of 21.3 N on the other. What is the charge on each object? (Round the a..
In a 290-turn automobile alternator, the magnetic flux in each turn is %u03A6B = 2.50 10-4 cos %u03C9t, Determine the maximum emf in the alternator
In the 1950's, an experimental train that had a mass of 16000 kg was powered across a level track by a jet engine that produced a thrust of 5.76 × 105 N for a distance of 418 m. Find the work done on the train
A man is dragging a trunk up the loading ramp of a mover's truck. The ramp has a slope angle of 20.0degree, and the man pulls upward with a force of magnitude 385N whose direction makes an angle of 30.0 degree with the ramp.
A parallel plate capacitor has plates each of area 100 cm^2, what is the average charge density on the positive plate?
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. What is the diffraction angle of the sound under each of the following situations
In exercising, a weight lifter loses 0.152 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. find the change in the internal energy of the weight lifter
A cooking vessel on a slow burner contains 11.2 kg of water and an unknown mass of ice in equilibrium at 0°C at time t = 0. The temperature of the mixture is measured at various times, and the result is plotted. During the first 50.0 min, the mixt..
A 1.0- kg mass is attached to a string wrapped around a shaft of negligible mass and having a 8.0- cm radius. How far apart are the masses of the dumbbell
Suppose a particle with mass m release from rest in a uniform gravity g. Suppose the drag force is proportional to speed square, find an expression that gives the relationship between velocity and time
A projectile is launched perpendicularly upward from a planet of mass M; and radius R; its initial speed is twice the escape speed. Derive an expression for its speed as a function of the distance from the center of the planet.
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