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there are some people who believe that earth has a twin that orbits directly opposite the sun with exactly the same
in stanford universitys linear accelerator machine electrons are accelerated to a kinetic energy of 50 billion ev the
calculate the work done the amount of heat absorbed and the change in internal energy duringa melting of 1 gram of ice
the figure below shows a wooden cylinder with mass m 0225 kg and length l 0600 m with n 500 turns of wire wrapped
westerly winds coming off the pacific ocean rise over the rocky mountains which rise to a height of approximately 15000
consider a system of 12 particles with two energy levels plot the number of microstates corresponding to each value of
on a clear night a laser rotated at an angular velocity of 1 radian s-1 produces a spot of light that is visible on
a man pushes a lawn mower on a level lawn with a force of 186 n if 39 of this force is directed downward and 49 w of
a kingfisher is hovering 30m above a lake when it drops a fish its carrying a second kingfisher 50m above the first
professor spenditt oblivious to economics and politics proposes the construction of a circular proton accelerator
a sled and rider with a combined weight of 59 kg are at rest on the top of a hill 10 m higha what is their total energy
find the mode configurations and frequencies for transverse oscillations of a beaded string of 5 beads with one end
light from the sun allows a solar cell to move electrons from the positive to the negative terminal doing 24 x 10-19 j
1 waves moving on a lake have a speed of 23 ms and a distance of 18 m between adjacent crestsa what is the frequency of
a horizontal spring is lying on a frictionless surface one end of the spring is attached to a wall whle the other end
each of the sources in the drawing emits a frequency of 457 multiplied by 1014 hz and the speed v is 250 106 msb
a person who weighs 635 n is riding a 98 n mountain bike suppose the entire weight of the rider and bike is supported
a speeder is pulling directly away and increasing his distance from a police car that is moving at 23 ms with respect
a 1020 kg car moving 400 ms rear ends a 560 kg car at stop when they collide the bumpers lock and they move together
a converging lens has a focal length of 8650 cm a 140 cm tall object is located 1350 cm in front of this lensa what is
a skier starts from rest at the top of a hill inclined at 105 degrees the hill is 200m long and the coefficient of
a mirror produces an image that is located 3800 cm behind the mirror when the object is located 760 cm in front of the
two forces f1 135i-095jn and f2 -085i120jn are applied on a moving object of mass 030 kg the displacement vector
6 j of work is needed to push an object of mass 2 kg from point a to point b of the frictionless inclined plane as