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a 1055-kg van stopped at a traffic light is hit directly in the rear by a 655-kg car traveling with a velocity of 200
vibration from a 475 hz tuning fork sets up standing waves on a string clamped at both ends one of which you may take
an object glides on a horizontal tabletop with a coefficient of kinetic friction of 045 if its initial velocity is 55
an elevator cabin mass 530 kg is designed for a maximum load of 3100 kg and to reach a velocity of 26 ms in 3 s for
a 350kg piano slides 38m down a 29 degree incline and is kept from accelerating by a man who is pushing back on it
a professor drives off with his car mass 820 kg but forgot to take his coffee mug mass 038 kg off the roof the
a 780-g bullet moving at 480 ms penetrates a tree trunk to a depth of 45 cma use work and energy considerations to find
starting from rest a 54-kg block slides 210 m down a rough 300deg incline the coefficient of kinetic friction between
you throw a 1 kg rock down a 5m-deep wishing well it hits the water with a velocity of 75 ms how much work did air
an olympic high jumper wants to cross a bar 19 m off the ground while mantaining a velcity of 098 ms how fast does she
you want to propel a 150 kg t-shirt from a spring-loaded launcher to a velocity of 100 ms how far back do you have to
space vehicles traveling through earths radiation belts can intercept a significant number of electrons the resulting
a cork ball of mass 120 g is placed between two very large horizontal planes of charge the bottom plane has a uniform
a transparent rod 300 long is cut flat at one end and rounded to a hemispherical surface of radius 100 cm at the other
a car of mass m is on an icy driveway inclined at an angle 160deg as shown in the figurea determine the acceleration
at the end of a wild roller-coaster ride the train of cars must come to a graceful stop at the loading station before
a suppose a hockey puck slides down a frictionless ramp with an acceleration of 400 ms2 what angle does the ramp make
a rock of mass 49 kg accidentally breaks loose from the edge of a cliff and falls straight down the magnitude of the
if you stand on a bathroom scale the spring inside the scale compresses 080mm and it tells you your weight is 680n
at time t 0 and at position x 0 m along a string a rightward x dir travelling sinusoidal wave with frequency of 220
a frictionless plane is 100 m long and inclined at 340deg a sled starts at the bottom with an initial speed of 600 ms
while on a one-hour trip a small boat travels 32 km north and then travels 45 km east what is the magnitude of the
a spacecraft is in orbit around a planet the radius of the orbit is 29 times the radius of the planet which is r 71483
in the tintin adventure explorers on the moon the rocket leaves earth and accelerates toward the moon upon reaching
a football is kicked at ground level with a speed of at an angle of 350ordm to the horizontal how much later does it