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a transformer has 450 turns in its primary coil and 30 turns in its secondary coil which one of the following
a small rectangular loop of wire is located close to a long straight wire originally carrying a current i 91 a see
a sealed glass jar contains air initially at a pressure of 100 atm and a temperature of 0deg c discover the air
lasers can be utilized to drill or cut material one such laser generates a series of high-intensity pulses rather than
a 17 kev electron is brought to rest with colliding twice with target nuclei as in fig40-15 suppose the nuclei remain
when a billard ball hits another billarid ball then other ball is maving but striking ball also move some distance
a solid disk rotates in the horizontal plane at an angular velocity of 0038 rads with respect to an axis perpendicular
a cylindrical shell of radius 7cm and length 24 cm has charge uniformly distributed on its surface the magnitude of the
a proton has 1836 times the rest mass of an electron at what speed will an electron have the similar kinetic energy as
a concave makeup mirror is designed so the virtual image it produces is 4 times the size of the object when the
the resolution of the eye is eventually limited by the pupil diameter what is the smallest diameter spot the eye can
the axis of a cylindrical container is vertical the container is filled by equal masses of water and oil the oil floats
a population inversion for two energy levels is often explained by assigning a negative kelvin temperature to the
suppose that in the stern-gerlach experiment for neutral silver atoms the magnetic field has a magnitude of b 055 t a
a brick is initially 1210 cm high and an aluminum can is initially 1211 cm high by how much should their temperatures
a 200 kg stone is tied to a 0500-m length of string and swung around a circle at a constant angular velocity of 120
assume the skin temperature of a naked person is 34deg c when the person is standing inside a room whose temperature
a boy tosses a coin straight up to24 m assume the height when the coin leaves his hand is 10 m what was the initial
a lead rod and a common glass rod both have the similar length when at235deg c the lead rod is heated to532deg c to
a certain wire stretches 0980 cm when an outward force of magnitude f is applied to each end the similar force is
a laser beam is incident at an angle of 340deg to the vertical onto a solution of corn syrup in watera if the beam is
a what is the tangential acceleration of a bug on the rim of a60 in diameter disk if the disk moves from rest to an
seven electrons are trapped in a one-dimensional infinite potential well of width l what multiple of h28ml2 gives the
two identical sinusoidal waves by wavelengths of 200 m travel in the same direction at a speed of 150 ms the second
a 65 g ice cube at 0degc is heated until 60 g has become water at 100degc and 50 g has become steam at 100degc how much