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One gallon of gasoline releases approximately 1.0 108 J when it is "burned" (i.e., undergoes combustion) in a car engine. If the engine releases 3.2 107 J of heat during this time, what is the mechanical work done by the engine?
What is the smallest number of whole logs (? = 725 kg/m3, radius = 0.0917 m, length = 3.10 m) that can be used to build a raft that will carry four people
A box of textbooks of mass 25.9kg rests on a loading ramp that makes an angle \alpha with the horizontal. find the minimum angle at which the box starts to slip
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 8.0 km away. Find the power used to heat the wires if the power is transmitted at 1300 V
Two identical cars (m = 1350 kg) are traveling at the same speed of 18.9 m/s. What is the magnitude of the total momentum of the two cars
A pion decays into a muon and a neeutrino. In the rest frame of the pion, the muon always has a speed of .507c. what will be the speed of the muons in the lab fram
During a particular car crash, it takes just 0.18s for the car to come to a complete stop from 50 km h -1. At what rate is the car accelerating during the crash
q1. a water-skier is moving at a speed of 14.7 ms. while she skis in the same direction as a travelling wave she
A disk of radius 10 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 8.2 rad/s2. compute the angular velocity of the disk
In a standing wave pattern the distance between the second and the seventh nodes is 5cm. find the wavelength and the speed of the wave
A mass of 8 kg is resting on a horizontal table with a coefficient of kinetic friction of 0.35. Calculate the linear acceleration of the system
What is the net entropy change
Tarzan, in one tree, sights Jane in another tree. He grabs the end of a vine with length 21m that makes an angle of 50? with the vertical, Calculate Tarzan's speed just before he reaches Jane
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