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A uniform 1.3-kg rod that is 0.86 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are 69 N/m and 32 N/m. Find the angle that the rod makes with the horizontal.
The lenes of a particular set of binoculars have a coating with index of refraction n=1.38, If the lenses refelct a wavelength of 540nm the most strongly, what is the minium thinkcness of the coating
Sam's job at the amusement park is to slow down and bring to a stop the boats in the log ride. how much work does Sam do to stop it
A 7.05-kg ball of clay is thrown downward from a height of 4.08m/s onto a spring with k=1600 N/m. Find the total work done on the clay during the spring's compression
A 107-kg horizontal platform is a uniform disk of radius 1.85 m and can rotate about the vertical axis through its center. Find the moment of inertia of this system, consisting of the platform and its population, with respect to the axis
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. Find the average power of each pulse
Two particles, with identical positive charges and a separation of 2.70 10-2 m, are released from rest. Immediately after the release, particle 1 has an acceleration A1 whose magnitude is 4.90 103 m/s2,
Two protons that are very far apart are hurled straight at each other, each with an initial kinetic energy of 0.21 MeV, What is the separation of the protons from each other
A diffraction grating with groove spacing of 2 microns is used to observe the balmer series in hydrogen, At what angle will the first order cyan line appear
A 4 kg dog stands on one end of a 20 kg boat. The dog is initially 6 m from the shore, How far has the boat moved after the dog has walked the 2m
when 105 mL of water at 22 C is mixed with 68mL of water at 95 C, what is the final temperature? suppose no heat is lost to the surroundings and density of water is 1 g/mL.
question11 the molecular mass of helium is 4 gmol boltzmannrsquos constant is 1.38066 times 10minus23 jk universal gas
Three charges, each of magnitude 9 nC, are at separate corners of a square of edge length 4 cm. The two charges at opposite corners are positive, and the other charge is negative.
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