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a plane flies at a speed of 100ms relative to still air there is a wind blowing at 40ms 55 degrees to the east of
the tub of a washer goes into its spin-dry cycle starting from rest and reaching an angular speed of 30 revs in 110
let east with the x direction and north be the y directionnbsp a driver travels 10 km east 20 km north and 50 km south
a forklift truck is being used to raise a 60 kh crate onto a shelf the crate contains breakables so it must not slide
a 57- kg concrete block rests on a level table a 31- kg mass is attached to the block by a string passing over a light
to enter the main pool at an amusement park a swimmer use a water slide which has a vertical height of 241 meter
a 155 kg mass vibrates in simple harmonic motion with a frequency of 79 hz it has a maximum displacement from
a block of mass m slides without friction along the looped track shown in the figure if the block is to remain on the
as an acapulco cliff diver drops to the water from a height of 310 meter his gravitational potential energy decreases
a pitcher throws a curveball that reaches the catcher in 058 sec the ball curves because it is spinning at an average
a 200g block is pressed against a spring k 1400 nm until the block compresses the spring 100cm from equilibrium the
a dentist wants a mirror that when 230 centimeter from a tooth will produce a 25x upright image should a convex or
two forces parallel to the x axis do 139 j of work on a small tray while moving it 217 m in the x direction across a
a sheet of glass having an index of refraction of 140 is to be coated by a film of material having an index of
if you look at yourself in a shiny christmas tree ball with a diameter of 80 centimeter when your face is 300
a diverging lens f -115 centimeter is placed 200 centimeter to the left of a converging lens f 335 centimeter a 300
a loaded ore car has a mass of 955 kilogram and rolls on rails with negligible friction it starts from rest and is
a u-tube open at both ends is partially full w water oil p750 kg m3 is then poured into the right arm and forms a
a 120 kilogram object is held 120 meter above a relaxed mass less vertical spring with a force constant of 340 nm the
a thin film of cryolite nc 137 is applied to a camera lens ng 165 the coating is designed to reflect wavelengths at
assume 2500j of heat are added to 22mol of argon gas at a constant pressure of 120 kpa suppose that the argon can be
a uniform 200 newton board length l has two weights hanging from it 300 n at l3 from one end and 400 n 3l4 from the
the starting motor of an automobile is turning too slowly and the mechanic has to decide whether to replace the motor
while skiing in jackson wyoming your friend ben of mass 843 kg started his descent down the bunny run 277 m above the
starting from rest a basketball rolls from the top of a hill to the bottom reaching a translational speed of 66ms