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what linear speed must a 45times102 hula hoop have if its total kinetic energy is to be 015 assume the hoop rolls on
an adventurous crosses between two rock cliffs by slowly going hand over hand along a rope stretched between the cliffs
find the coefficient of kinetic friction between a 41- block and the horizontal surface on which it rests if an 83
a speck of dust on a spinning dvd has a centripetal acceleration of 20 ms2 a what is the acceleration of a different
the drill bit of the variable-speed electric drill of radius 003 m has constant angular acceleration 25 rads2 the
suppose two flat glass plates 30-cm long are in contact along one end and separated by a human hair at the other end if
a 10 kg rod rests on two horizontal rails 10 m apart and carries a current of 50 a from one rail to the other the
you have a parallel plate capacitor with plates of 13 m2 and the magnitude of charge on each plate is 67 c what is the
during a basketball game a 10 kg ball gets thrown vertically in the air its momentarily stationary at a height of 50 m
a ball is thrown straight up by a student at rest on the surface of earth a graph of the position y as a function of
a small glider and a big glider both start from rest and are pushed with the same constant force f along a horizontal
a block of mass m starts from rest at the top of a ramp of vertical height h the block slides down frictionless ramp
a window air conditioner consumes 1500 w of electric power and has cop 37 if it runs continuously for 18h how much
find the maximum temperature in a carnot cycle operating in a room-temperature 23 degrees c environment if its carnot
steel rails 250m long are laid end to end with gaps between them to account for thermal expansion part a if the track
suppose you have a spherical balloon filled with air at room temperature and 10 atm pressure its radius is 12cm you
egg incubation is an important determinant of the sex of many reptiles in a study of loggerhead turtles 100 of the
a hairless cats body temperature is 75 degrees c higher than a humans part a find the hairless cats temperature in
for this problem compute the expected sea level rise for the projected 4degc mean global temperature rise anticipated
the protein -lactalbumin molecular weight 14000 has been studied under different solution conditions by dynamic light
calculate the moment of inertia of each of the following uniform objects about the axes indicated consult table moments
a box 4kg being transported in the back of a truck that is accelerating forward at 2 the box does not slide relative
a balloon contains 063 mol of helium it rises in maintaining a constant 280 k temperature to an altitude where its
a block with mass 500 slides down a surface inclined 369 to the horizontal the figure figure 1 the coefficient of
a 420-cm diameter wheel consisting of a rim and six spokes is constructed from a thin rigid plastic material having a