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a race driver has made a pit stop to refuel after refuelinghe leaves the pit area with an acceleration whose magnitude
a ski starts from rest and slides down a 29deg incline 100 mlong use energy methodsa if the coefficient offriction is
the angular speed of a propeller on a boat increases with constantacceleration from 109 rads to 240 rads in 220
what is the impact speed when a car moving at 300 kmh bumpsinto the rear of another car traveling in the same direction
the drive train of a bicycle includes wheels 673 cm indiameter and pedal cranks 175 cm long the cyclist pedals at
a 100-v battery is connected to a 120-ohm resistor ignoring the internal resistance of the battery calculate the power
a disk of mass m and radius r rolls back and forth on avertical track of radius aa write the langrangian for the
after you pick up a spare your bowling ball rolls withoutslipping back toward teh ball rack with a linear speed of v
a wedge of mass m and angle alpha is resting on africtionless horizontal plane a rectangular box of mass m is onthe
an ice cube is placed in a microwave oven suppose the ovendelivers 97 w of power to the ice cubeand that it takes 32170
after hitting a long fly ball that goes over the rightfielders head and lands in the outfield the batter decides tokeep
a 128 g bulletis fired horizontally into a 93 g woodenblock initially at rest on a horizontal surface afterimpact the
a 40-kg projectile leaves a 2000-kg launcher with a speed of400 ms what is the recoil speed of the
a 2100-kg truck traveling north at 41 kmhr turns east andaccelerates to 60 kmha what is the change in the trucks
an auto race is held on a circular track a car completes onelap in a time of 215 seconds with an average tangential
a 650 kg person throws a0045 kg snowball forward with aground speed of 300 ms a secondperson with a mass of 600
a source emits sound wavesof frequency 200 hz which move through still air at 340 ms thesource moves with a speed of 80
a car with a mass of 1500kg moving at 40ms comes to a stop in8 secondswhat is the change in momentum of the carwhat is
a 420 kg seal at an amusement part slides from restdown a ramp into the pool below the top of the ramp is 175mhigher
two railroad cars each of mass 6500kg and traveling 94 kmh in oppositedirections collide head-on and come to rest how
a spring with spring constant k stands vertically and a massm is placed on top of it the mass is gradually lowered
a 100w yellow lightulb550nm is 100m away from a 3cm diametershuttered aperture what is the total
in a certain cyclotron a proton moves in a circle of radius0800 m the magnitude of the magneticfield is 110 ta what is
an ideal monatomic gas with 36mol undergoes a reversible increase in temperature from 380 k to445 k at constant volume
40 kj of heat was added to a 500-g piece of wood whosetemperature then rose from 20 degrees c to 68 degrees c what was