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how can bees fly if their wings are so small and thin and their bodies so large and
a rod of 20 m length and a square 200 mm x 20 mm cross section is made of a material with a resistivity of 60 x 10-8
some nucleus ofnbsp75x190nbspatomic mass 18996182 unbspundergoesnbsp-nbspdecay to becomenbsp76x1190nbspatomic mass
a cylindrical copper cable carries a current of 1500 a there is a potential difference of 16x 10-2 v between two points
the half-life for the alpha decay of uranium is 447 times 109 yr determine the age in years of a rock specimen that
a car has a mass of 1000 kg and accelerates at 2 meters per second per second what is the magnitude of the net force
a device used in radiation therapy for cancer contains 081 g of cobalt-60 59933 819 u the half-life of this isotope is
a certain radioisotope has a half-life of 857 days what percentage of an initial sample of this isotope remains after
strontium38sr90has a half-life of 291 yr it is chemically similar to calcium enters the body through the food chain and
an isotope has a half-life of 1191 days what is its decay constant in units of
refer tointeractive solution 3127to review a model for solving this type of problem84x210atomic mass 20998285
a beam of nuclei is used for cancer therapy each nucleus has an energy of 109 mev and the relative biological
a 069-kg tumor is being irradiated by a radioactive source the tumor receives an absorbed dose of 13 gy in a time of
a beam of particles is directed at a0013-kg tumor there are18 times 1010particles per second reaching the tumor and the
a jumbo jet has a mass of 100000 kg the thrust for each of its four engines is 50000 n what is the jets acceleration in
over a years time a person receives a biologically equivalent dose of 21 mrem millirems from cosmic rays which consist
a magnet of mass 005 kg is dropped and falls vertically it then enters at the top of a 250 cm copper tube the speed
a plank having lengthnbsplnbsp 2 m and massnbspmnbsp 3 kg is suspended from the ceiling by a wire that is attached a
the resonant frequency of a certain series rl ccircuit is 264khz and the value of its capacitance is550muf what is the
1 a block of mass m 10 kg is sitting on a surface inclined at angle theta 45deg given that the coefficient of static
if the gravity of the moon is 16 of g which is 98 ms2 what is the mass of an object that has a weight of 115 n on the
1 from the previous problem find an equation for the speed of the ball at the determined location assuming the ball
a plane convex lens is made of glass index162 with one flat surface and the other havinga radius of 11 cmwhat is the
a physcis book slides off a horizontal tabletop with a speed of 370 ms it strikes the floor in 350s ignore air
a meter stick is balanced on a fulcrum at its center then a 3 n weight is places 82 cm to the left of center how many