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light hits the surface of water at an incident angle of 36deg with respect to the normal line what is the angle between
a spring is resting vertically on a table a small box is dropped onto the top of the spring and compresses it suppose
two lenses that are l 40 cm apart are used to form an image as shown in figure lens 1 is converging and has a focal
a lighter-than-air spherical balloon and its load of passengers and ballast are floating stationary above the earth
a concave lens has a focal length of -28 cm find the image distance and magnification that results when an object is
an aluminum block slides along a horizontal surface the block has an initial speed of 100 ms and an initial temperature
bones and muscles a patient in therapy has a forearm that weighs 205n and lifts a 1120n the only other significant
find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to six times the
a person of mass 800kg stands at the center of a rotating merry-go-round platform of radius 250m and moment of inertia
an instructor wants to use a lens to project a real image of a light bulb onto a screen 220 m from the bulb in order to
the external magnetic field in a loop decreases from 01 tesla to zero in 2 seconds the loop of wire has ten turns a
suppose that each vehicle is initially moving at 860 ms and that they undergo a perfectly inelastic head-on collision
the golden gate bridge in san francisco has a main span of length 128 km one of the longest in the world imagine that a
a 25 kg particle-like object moves in a plane with velocity components vx 40 ms and vy 65 ms as it passes through the
a magician wishes to create the illusion of a 297-m-tall elephant he plans to do this by forming a virtual image of a
the hot reservoir for a carnot engine has a temperature of 943 k while the cold reservoir has a temperature of 495 k
a monatomic ideal gas expands at constant pressure a what percentage of the heat being supplied to the gas is used to
a wheeled cart with a mass of 050 kg is rolling along a horizontal track at a constant velocity of 20 ms when it
what is the temperature of a sample of gas when the average translational kinetic energy of a molecule in the sample is
you have a 0441-kg sample of gas containing 185 moles you measure the gass temperature and find 521degc calculate the
the total translational kinetic energy of the molecules of a sample of gas at 435 k is 199 times 104 j how many moles
0110kg stone rests on a frictionless horizontal surface a bullet of mass 800g traveling horizontally at 340ms strikes
an open flask sitting in a lab fridge looks empty but we know that actually it is filled with a mixture of gases called