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A 3250 kilogram airplane takes 12.5 minute to achieve its cruising altitude of 10.0 kilometer and cruising speed of 850 km/h. If the plane's engines deliver, on average, 1500 horsepower of power during this time, find what is the efficiency of the engines?
question uncompressed the spring for an automobile suspension is 40cm long. it needs to be fitted into a space 33cm
A helium-filled toy balloon has a gauge pressure of 0.400 atm and a volume of 8.0 liters. How much greater is the internal energy of the helium in the balloon
A simple harmonic oscillator takes 17 seconds to undergo 17 complete oscillations. What is the frequency of the oscillator
a 8.4 kg mass is attached to a light cord that passes over a massless frictionless pulley. the other end of the cord is
An electron that has a horizontal initial speed of 4.50 x 10^6 m/s enters a region that has an electric field of 120 V/m pointing vertically upward. How long does the electron take to travel 9 cm in the horizontal direction
there are three masses m1 2.0 kg m2 5.0 kg and m3 7.0 kg. the mass are all affixed to a massless rod of length 15cm.
The speed of sound in bone is 3500 m/s. How much time does it take the echo of a sound wave to travel from the back of the bone to the front of the bone if the bone is 2.50 cm thick.
A copper kettle contains water at 23.4 °C. When the water is heated to 99.5 °C, Determine the volume of the kettle
An 800-N billboard worker stands on a 4.0-mscaffold supported by vertical ropes at each end. what is the tension in the rope nearest the worker
Find the energy of the electron in the ground state oftriply ionized beryllium, which has an atomic number Z =4. Find the radius of its ground-state orbit
An aluminum clock pendulum having a period of 1.80 s keeps perfect time at 20.0°C. How much time will it gain or lose every hour
Assume that the protons in a hot ball of protons each have akinetic energy equal to kT, what is the least separation anytwo protons can have
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