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A small mass m is set on the surface of a sphere, Fig. 4-51. If the coefficient of static friction is µs = 0.57, at what angle would the mass start sliding?
At 25°C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr. What is the mole fraction of hexane in the vapour that is in equilibrium with this solution
The middle C string on a piano is under a tension of 900 N. The period and wavelength of a wave on this string are 3.82 ms, Find the linear density of the string
An x-ray photon of initial energy 50.0 keV Compton scatters from an electron that is initially at rest. find the wavelength of the back-scattered photon
A diffraction grating has 3047 lines/cm. Light that contains all wavelengths between 463 and 628 nm shines on the grating. Calculate the width of the dark area
You are holding a bulletin board weighing 9.10 N in place against a wall while your friend secures it to the wall. How large must this force be if the coefficient of static friction with the wall is 0.39
Sodium ions (Na+) move at 0.843 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
You're a marine biologist concerned with the effects of sonic booms on plankton, and you need to estimate the altitude of a supersonic aircraft flying directly over you at 1.1 times the speed of sound
When a 9.0 V battery is connected to a capacitor, it puts 8.00e-4 C of charge on the capacitor. What is the unknown battery's voltage
An 15 by 7.5 house is built on a concrete slab 29 thick. What is the heat-loss rate through the floor if the interior is at 22 while the ground is at 12
A sun yacht is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, What is the magnitude of the resulting acceleration
A reflecting telescope has a main mirror with fM = 680 mm. If an eyepiece with a magnification of 40 is used, what is the total magnification of the telescope
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, but are unable to make the measurements directly. How far away is the tree
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