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A 82.7 kN car is travelling at 57.7 mph when the driver decides to exit the freeway by going up a ramp. After coasting 369 m along the exit ramp the car's speed is 29.3 mph, and it is h= 11.3 m above the freeway. What is the magnitude of the average drag force exerted on the car?
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Answers for an elevator are moving down with an acceleration of 3.360 m/s. what would be the apparent weight of a 64.20 kg man in the elevator.
A fully loaded Boeing 777 commercial airplane with a mass of 303.6 tonnes is at one end of the runway and about to take off. Calculate the length of the runway
Capacitors C1 = 5.50 µF and C2 = 2.95 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
Two 5.5 5.5 metal plates are separated by a 0.21--thick piece of Teflon. compute the maximum potential difference between the disks
If a power plant burns coal at 1000°C and the air temperature where the exhaust fumes cool is at 20°C, what is the maximum efficiency of the power plant?
A solenoid of radius 3.5 cm has 800 turns and a length of 25 cm. Find the rate at which current must change through it to produce an emf of 90 mV
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
A mass-spring system oscillates with an amplitude of 3.50 cm. If the spring constant is 241 N/m and the mass is 434 g, Determine the maximum speed of the object
A diffraction grating is made up of slits of width 420 nm with separation 1300 nm. How many maxima are there in the full diffraction pattern
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; at the high point, or apogee, it is 2500km above the earth's surface. What if the rockets were fired ..
Calculate the force a piano tuner applies to stretch a steel piano wire 8.10 mm, if the wire is originally 0.850 mm in diameter and 1.30 m long
Consider a solid sphere of radius 15 cm, at a temperature of 68 degrees Celsius. What is the power radiated (in watts) by the sphere
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