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positive focal lengths correspond to concave lensesconvex lensescompound lensesconvolted
1 describe the rutherfords model of the atom and compare it with the model proposed by his student niels bohr2 what is
a man drinks a bottle of beer and proposes to work off its460kj by exercising with 20 kg barbell if each lift of
if a real object is placed inside the focal point of a diverging lens the image isvirtual inverted andreducedvirtual
what is the partition coefficent of 100 mg of benzoic acid in 2ml of methylene chloride and 2ml of water and 101 mg of
a rifle with a barrel length of 610 cmfires a 100 g bulletwith a horizontal speed of 360 rm ms the bullet strikes a
two pole-vaulters just clear the bar at the same height thefirst lands at a speed of 707 ms while the second lands at
suppose the skateboarder shown in the drawing reaches a height of230 m above the right side of the semicircular ramp he
a 500 g object moving to the right at200 cms makes an elastic head-oncollision with a 100 g object that isinitially at
two gliders are positioned on an air track m1 and m2 m2 is stationary and m1 is then pushed down the track and collides
starting from rest a 57 kg block slides 24 m down a rough 300deg incline thecoefficent of kinetic friction between the
a disk of radius r and uniform surface charge density sigma liesin the xy plane with its axis coinciding with the z
a 140 kg astronaut including space suit acquires a speed of250 ms by pushing off with his legs from an 1800 kg
determine the force required to push a 1000kg stoneblock up the side of the pyramid along a ramp the ramp has anangle
a uniform ion beam of radius r consists if n ions per meter ofmass m speed v and charge q find the lorentz force due
two point charges are placed along a horizontal axis with the following values and positions 30muc at x0 cm and-70muc
the coefficient of static friction is 8 between the soles ofa sprinters shoes and the level track surface shes running
a transformer has 3840 turns in the secondary the inputvoltage is 110v the output current is 65a the input current
a 560 kg mass is pushed against a spring k 2000 nm such thatthe spring is compressed 120 cm the mass is
at a party a stereo system comprises of two identical balancedspeakers located right next to each other and they are
when skylab reentered the earths atmosphere on july 11 1979it broke into a myraid of pieces one of the largestfragments
an sub with a mass of 1800 kg is traveling eastbound at 17 mswhile a compact car with mass of 900 kg is traveling
a person on a trampoline bounces straight upward with aninitial speed of 45 ms what is the persons speed when she
a 22 kg dog is standing on the edge of a stationary frictionless turntable of rotational inertia 95 kgmiddotm2
a satellite of mass 4500 kg orbits the earthmass 60 1024 kg and has a period of 5800 sa find the magnitude of the