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a laserpointer has a beam intensity of 55 wm2 and a beam radius of 21 mm a first grader attempts to use it to move a
a wheel with a tire mounted on it rotates at the constant rate of 259 times a second a tack is stuck in the tire at
an explosion breaks an object into two pieces one of which has 15 times the mass of the other if 7800 j were released
a lab technician is testing new energy drink formulations on a series of hamsters the hamsters are given a certain
an undiscovered planet many lightyears from earth has one moon in a periodic orbit this moon takes 190 days on average
a rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 ms toward the sun it wishes to alter
a flywheel for energy storage in a hybrid gasoline-electric car is a ring-shaped rotor of mass 49 kg designed to rotate
in a large steam engine a horizontal rod is attached to a flywheel by means of a frictionless pivot 95 cm from the
a wheel is spinning at 46 rads when an acceleration of 075 rads2 is applied if the acceleration lasts for 140
calculate the solubility of mgco3 in pure water ksp 35 e8 then calculate the solubility of the same mgco3 in a 010 m
a 108 g frisbee is 30 cm in diameter and has about half its mass spread uniformly in a disk and the other half
calculate the ionic strength of a solution that is made 1222 m agno3 plus 0215 m mgcl2 plus 140 m
you have 855 ml of a solution that is composed of 152 grams of nh3 and 222 grams of aluminum chloride mixed well kb for
a string is wrapped many times around a pulley and is connected to a block with mb 4749 kg that is hanging vertically
effect on the development of western civilization then consider on the jews and their lieshow does mls essay written
two blocks are connected by a string over a frictionless massless pulley such that one is resting on an inclined plane
how many moles of h3o or oh - must you add per liter of ha solution to adjust its ph from 980 to 891 assume negligible
a 70 kg man walks along a 40 kg horizontal plank which is 2 m long the plank is attached to a hinge mounted to one wall
a 2083 g sample of a mixture containing sodium carbonate and sodium bromide was placed in a 2500ml volumetric flask and
a solid marble a solid disk and a hoop have the same mass m 14 kg and the same radius each object is held at rest at
a water column of 250 cm is supported in a tube during an experiment calculate the equivalent height a column of
what peptide remains after two sequential edman degradations of the pentapeptide
a meteorologist in a tv station is using radar to determine the distance to a cloud he notes that a time of 024 ms
the normal freezing point of benzene is 55 degrees c a benzene solution contains 625 mg of naphthalene mw 128gmol per
a flash unit for a camera has a capacitance of 1300microfpart a what resistance is needed in this rc circuit if the