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The propeller of a light plane has a length of 1.752 m and a mass of 19.96 kg. The rotational energy of the propeller is 158.6 kJ. What is the frequency of the propeller in rpm? You can treat the propeller as a thin rod rotating through its center
Problem on elevator
A student holds a laser that emits light of wavelength 633nm. The beam passes through a pair of slits separated by 0.3mm, Find the speed of the first-order maxima on the screen
Two blocks are travelling towards eachother. The first has a speed of 10cm/sec and the second has a speed of 60 cm/sec. compute the velocity of the first block after collision
A car sits in an entrance ramp to a freeway, waiting for a break in the traffic. when it reaches the end of the ramp, which has length 118m
A ski tow operates on a slope of angle 14.8? of length 250m . The rope moves at a speed of 12.4km/h, Estimate the power required to operate the tow
A 48.9 g ball of copper has a net charge of 3.0 µC. What fraction of the copper's electrons have been removed
What are the magnitudes of the (a) impulse and (b) average force on the passenger during the collision? If the passenger were to jump upward with a speed of 6.00 m/s relative to the cab floor just before the cab hits the bottom of the shaft, what ..
A movie projector is equipped with a 0.6-meter focal length lens that is positioned 0.605 meters from the film. How many times larger is the image than the object
A tank holds a layer of oil, 1.65 m thick, which floats on a layer of syrup that is 0.83 m thick. Both liquids are clear and do not intermix. A ray, The index of refraction of the syrup is
A meteoroid is speeding throughout the atmosphere, travelling east at 16.80 km/s while descending at 13.60 km/s. What is its speed in km/s.
A person of mass 89.70 kg escapes from the burning building by jumping from a window situated 27.50 m above a catching net.
You work for a moving company and are given the job of moving two crates (masses are 130kg and 280kg) held together by a rope attached between the two. You pull on a rope attached to the larger crate giving the system the acceleration of 0.29m/s2. Wh..
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