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Obtain the average speed and average velocity of a complete round trip in which the outgoing 250 kilometer is covered at 95 km/h, followed by a 1.0 h lunch break, and the return 250 km is covered at 55 km/hr.
Your friend decides to produce electrical power by turning a coil of 100,000 circular loops of wire around an axis parallel to a diameter in the Earth's magnetic field, What will be the average power obtained from this device
A jet plane is flying with a constant speed along a straight line, at an angle of 30.0? above the horizontal. The plane has a weight W? of magnitude 86,500N, What is the magnitude of the thrust force
Why were the relative intensities of an element's spectral lines NOT all the same? The next corresponding hydrogen line in the Balmer series shouldbe due to the n=7 to n=2 transition. Calculate the wavelength of this line and offer an explanation ..
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 532 and has a speed of 25.5. The motorcycle has a speed of 12.50. What frequency does the motorcyclist hear in this case?
The aorta is a major artery, rising upward from the left ventricle of the heart and curving down to carry blood to the abdomen, find the magnitude (in m/s2) of the blood's centripetal acceleration
A roughly spherical astroid whose radius is 40 km rotates once every 2.4 hours. What is it's angular speed in milliradians/sec
Two blocks with masses M_1 and M_2 hang one under the other. For this problem, take the positive direction to be upward, find the tension in the lower rope
A subway train has a sound intensity level of 90 dB, and a rock band has a sound intensity level of 110 dB. How many times greater is the sound intensity of the band than that of the train
A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 27m, What is the total duration of the rocket's flight
the engine of a small aircraft m 1400 kg including pilot develops 180 hp. the airplanes speed is increased from 30 ms
A 120- crate, starting from rest, is pulled across a floor with a constant horizontal force of 380. What is the final speed of the crate
a particle with speed v0 and impact parameter b starts far away from a planet of mass m. a. starting from scratch find
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