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A pronghorn antelope has been observed to cover 1.60 km with an average speed of 67.0 km/h. The antelopes speed during the first half of the distance is 88.0km/h. find the antelopes speed during the second half of its run
A piano wire with mass 2.85 g and length 82.0 cm is stretched with a tension of 35.0 N. A wave with frequency 120 Hz and amplitude 1.40 mm travels along the wire. Calculate the average power carried by the wave. What happens to the average power if t..
You power a series R-L-C circuit with a sine-wave generator operating at a frequency 1.00 kHz. What is the rms voltage supplied by the source
A 49.5 kg boy jumps on a 4.95 kg pogo stick with spring constant 3650 N/m, Find the period of the boy's motion
A bungee jumper with mass 63 jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 47. He finally comes to rest 21.00 below the level of the bridge.
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the centripetal force that acts on the car
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him. What force does the winning player exert on the ground
When the knob of a certain radio tuning capacitor is turned, the effective area of the plates in the interleaved position is reduced from 40 cm^2 to 10cm^2, What is the ratio of initial to the final capacitance
A 2.27-kg block (M1) and a 5.87-kg block (M2) are connected by a massless string. Applied forces, F1 = 10.1 N and F2 = 4.83 N, act on the blocks, What is the net force acting on M1
Air flows through the supersonic nozzle. The inlet conditions are 7 KPa and 420 degree C. The nozzle exit diameter is adjusted such that the exiting velocity is 700m/s. Calculate the exit temperature
A 2.90 box is moving to the right with speed 8.50 on a horizontal, frictionless surface, What distance does the box move from its position at before its speed is reduced to zero
Air that occupies 0.15 cubic meters at 1.03e+05 Pa gauge pressure is expanded isothermally to atmospheric pressure and then cooled at constant pressure until it reaches its initial volume
A Carnot air conditioner takes energy from the thermal energy of a room at 294 k and transfers it as heat to the outdoors, which is at 309 k. for eacg joule of electric energy needed to operate the air conditioner, how many joules are removed from..
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