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a 10 kg crate is pulled up a 30 degree incline with a rope parallel to the incline the tension in the rope is 100 n if
neutron-induced fissionof u-235 results in the fission products iodine-139 and yttrium-95how many neutons are
a boy tosses a football upward if the football rises a vertical distance of 41 m and the boy catches it at the same
in november 2004 the united states tested a scramjet that flew at 100times the speed of sound for 110s as measured
the primary winding of an step-up transformer has 100 turns and the secondary has 1300 turns if the rms input voltage
a branch is wedged under a rock and rests on a small object the small object is 15 m from the large rock and the branch
a river 982 m wide flows toward the south at 358 mmin a girl on the west bank wishes to reach the east bank in the
part a an x-ray beam with wavelength 0270nm is directed at a crystal as the angle of incidence increases you observe
an electron is in the fifth bohr orbit of hydrogen find the speed of the electronfind the time required for the
the ballistic pendulum is a device used to measure the speed of a projectile such as a bullet the projectile of mass 5g
a test tube contains 256 10-4 m3 of liquid carbon tetrachloride at a temperature of 755deg c the test tube and the
the coefficient of friction is 03 the initial speed is 3 ms how far does it slide down along the path before it comes
the star mizar in ursa major is a binary system of stars of nearly equal magnitudes assume the angular separation
light of wavelength 400 nm is incident normally on a film of water 10 microm thick the index of refraction of water is
a fireman d 590 m away from a burning building directs a stream of water from a ground- level fire hose at an angle of
the driver of a car slams on the brakes when he sees a tree blocking the road the car slows uniformly with acceleration
a photon with an initial wavelength of 1380times10-11 m compton scatters from an electron which is initially at rest
consider two blocks a and b of mass ma and mb coupled by a spring and resting on a horizontal frinctionless table let
in outer space there are two planets that are separated by a distance of 345x108 km these two planets have the extact
a rocket which is in deep space and initially at rest relative to an inertial reference frame has a mass of 841 x 105
a cell membrane acts as a parallel-plate capacitor with a spacing of 13 nm and filled with water suppose the positive
x rays diffract from a crystal in which the spacing between atomic planes is 0193nm the second-order diffraction
the mean distance of mars from the sun is 152 times that of earth from the sun from keplers law of periods calculate
a projectile is fired vertically from earths surface with an initial speed of 89 kms neglecting atmospheric friction
you spray your sister with water from a garden hose the water is supplied to the hose at a rate of 0105 liters per