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a college student produces about 127 kcal of heat per hour onthe average what is the rate of energy production in
if rays of light come into glass and diamond surfaces at an angleof 30 degrees which rays will be bent more by
a college campus features a large fountain surrounded by a circularpool two students start at the northernmost point of
white light passes through a piece of crown glass and strikesan interface with air at an angle of 4115circ the index of
the figure shows a lower leg being exercised it has a 49-nweight attached to the foot and is extended at an angle with
tsunamis are fast-moving waves generated by underwater earthquakesin the deep ocean their amplitude is barely
a skier of mass 71 kg is pulled up a slopeby a motor-driven cablea how much work is required to pull him40 m up a 30deg
a cars speedometer converts the angular speed of the wheels to the linear speed of the car if the tires are 24 inches
one end of a wire is attached to a ceiling and a solid brass ball is tied to the lower end the tension in the wire is
an automobile weighing 105 x104 n has weight equally distributed overits wheels the weight of the car causes each tire
a 30 kg particle with velocity v50msi-60msj is at x30mand y80m it is pulled by a 7n force in the negative x
suppose a mass of a certain spherical neutron star is twice the size of the sun and its radius is 10km determine the
a 600 kg person bends his knees andthen jumps straight up after his feet leave the floor his motionis unaffected by air
by accident a large plate is dropped and breaks into three pieces the pieces fly apart parallel to the floor with v1
the drawing shows a collision between two pucks on an air-hockey table puck a has a mass of 0036 kg and is moving along
a circular loop radius 17 cm of wireis placed in a magnetic field that makes an angle of 30deg withthe normal to the
a lantern with a 6v 05w bulb uses a battery with emf 6v andinternal resistance 2 ohms how much power is actually
two insulated wires each 290 m longare taped together to form a two-wire unit that is 290 m long one wire carries a
the depth of the potential well for free electron in a metal can be determined by noting that the photoelectric work
a thin rod length 137 m is oriented vertically with itsbottom end attached to the floor by means of a frictionless
a proton resistor spring system in a magnetic field going out of the page has a mass of proton 16710-27 kg a spring
some bacteria are propelled by motors that spin hair-like flagella a typical bacterial motor turning at a constant
after a fall a 86 kg rock climber finds himself dangling from the end of a rope that had been 15 m long and 92 mm in
vertically polarized light with intensity io is normally incident on an ideal polarizer as the polarizer is rotated the
a meter stick balances horizontally on a knife-edge at the 500 cm mark with two 2 g coins stacked over the 115 cm mark