What is the coefficient of kinetic friction
A box weighing 470 N is pushed along a horizontal floor at constant velocity by a force of 260 N parallel to the floor. What is the coefficient of kinetic friction between the box and the floor?
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A world-class sprinter accelerates to his maximum speed in 3.8 s. He then maintains this speed for the remainder of a 100-m race, finishing with a total time of 10.3 s. What is the runner's average acceleration during the first 3.8 s?
A gorilla weighs 8.00*(10*10) N and swings from vine to vine. as the forilla grabs a new bine, both vines make an angle of 30 degrees with the vertical, sin such a condition of static equilibrium, what is the net force on the vine?
During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of about 100 km. How much time did it take to go around the Moon once? Give your answer in seconds.
A 330-kg piano slides 3.6 m down a 28º incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40. Calculate the force exerted by the man
A certain telescope has an objective of focal length 1580 cm. If the Moon is used as an object, a 1.4 cm long image formed by the objective corresponds to what distance, in miles, on the Moon? Assume 3.8 multiplied by 108 m for the Earth-Moon dist
A nonreflective coating of magnesium fluoride (n = 1.31) covers the glass (n = 1.52) of a camera lens. Assuming that the coating prevents reflection of yellow-green light (wavelength in vacuum = 568 nm), determine the minimum nonzero thickness tha
A 27 pound meteorite struck a car, leaving a dent 26 cm deep in the trunk. If the meteorite struck the car with a speed of 620 m/s, what was the magnitude of its deceleration, assuming it to be constant?
A registered pulmonary function technologist is performing lung testing on a patient. The patient inhales 1.5 L from the spirometer. What will happen to the volume of gas inside the patient's lungs?
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