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engineers have developed a bathyscaph that can reach ocean depths of 53 mi if the density of seawater is about 1030
nichrome wire of cross-sectional radius 0780 mm is to be used in winding a heating coil if the coil must carry a
a puck on a horizontal frictionless table is attached to a string that passes through a hole in a table initially the
a pencil 157 cm long is released from a vertical position with the eraser end resting on a table the eraser does not
a concave mirror has a focal length of 19 cm this mirror forms an image located 76 cm in front of the mirror what is
the outside mirror on the passenger side of a car is convex and has a focal length of -85 m relative to this mirror a
an 870kg block slides with an initial speed of 184 ms down a ramp inclined at an angle of 282 with the horizontal the
a 2000-kg car accelerates uniformly from rest to 120 kmhr in 10 seconds then maintains constant speed this happens on
a 827 kn car is travelling at 577 mph when the driver decides to exit the freeway by going up a ramp after coasting 369
a laser positioned on a ship is used to communicate with a small two man research submarine resting on the bottom of a
a 250-cm-diameter parallel-plate capacitor with a spacing of 0900 mm is charged to 500 va what is the total energy
a constant force of 25n acts on an object having a mass of 2kg for 3 seconds what is the magnitude of the change in the
a 212-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp the ramp is inclined at
a 50 v battery storing 720 kj of energy supplies 15 a of current to a circuit how much energy does the battery have
a point charge 240 is held stationary at the origin a second point charge -430 moves from the point 0125 0 to the
a race car starts from rest on a circular track of radius 515 m the cars speed increases at the constant rate of 0330
a skydiver of 75 kg mass has a terminal velocity of 60ms at what speed is the resistive force on the skydiver half that
some believe that the positions of the planets at the time of birth influence the newborn others deride this and say
you place a long straight wire on top of your compass and the wire is a height of 3 millimeters above the compass
the mass of a robot is 6210 kg this robot weighs 3970 n more on planet a than it does on planet b both planets have the
a 140 capacitor and a 550 inductor are connected in series with an open switch the capacitor is initially charged to
a man goes fishing for dinner he walks 5 km due west from his house and tries to catch a fish after 5 hours and no fish
a dentists chair of mass 2340 kg is supported by a hydraulic lift having a large piston of cross-sectional area 15960
a hydraulic jack is made with a small piston 14 cm in diameter that is used to move a large piston 58 cm in diameter if
a 51kg woman runs up a flight of stairs in 50s her net upward displacement is 50m approximately what average power did