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Air in a closed piston-cylinder device arranged to maintain a pressure of 400 kPa is heated from 27 ° C to 227 ° C. Initially the volume of the air is 1 liter. What is the final air volume?
A wire coil is oriented so that its plane is perpendicular to a magnetic field of 0.58 T initially pointing to the left. What is the average induced emf, if the diameter of the coil is 49 cm
If, in actuality, a 750 kg car with an initial speed of 96.0 km/h is observed to coast up a hill to a height of 17.0 m above its starting point, how much thermal energy was generated by friction
q1. an ambulance travelling at 39 ms approaches a car heading in the same direction at a speed of 19 ms. the ambulance
A 79.2 kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321m.
Suppose both skaters are initially moving v, but one has mass m and the other 2m. What point do they rotate about after they meet? What is the linear velocity of this point? What is the angular velocity of the system
1. you are hired by an industry that owns a building with a floor area of 6 m by 10 m and a ceiling height of 4 m. the
q1. a calculate the magnitude of the gravitational force exerted by venus on an 80 kg human standing on the surface of
The drawing shows a person (weight W = 582 N, L1 = 0.841 m, L2 = 0.406 m) doing push-ups. Find the normal force exerted by the floor on each hand
The bungee cord acts just like a coil extension spring with constant k = 4 lbf/ft and its unstretched length is L= 6 ft. At first the cord is loosely dangling but then becomes taut and goes into tension as soon as the skaters
If your roommate turns up the radio, increasing the sound level from 70 dB to 82 dB, what is the factor by which the intensity (in W/m^2) increases
A LASIK vision correction system uses a laser that emits 10 ns-long pulses of light, each with 2.5 mJ of energy. What is the average power of each laser pulse
In an RC series circuit, ? = 12.0 V, R = 2.02 M?, and C = 2.33 µF. Find the maximum charge that will appear on the capacitor during charging
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