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A NASCAR racecar rounds one end of the Martinsville Speedway. This end of the track is a turn with radius approximately 57.0 m. If we approximate the track to be completely flat and the racecar is traveling at a constant 24.5 m / s (about 55 mph) around the turn, what is the racecar\'s centripetal (radial) acceleration?
What is the force responsible for the centripetal acceleration in this case?
What is the acceleration of two falling sky divers. Some European trucks run on energy stored in a rotating flywheel, with an electric motor getting flywheel up to its top speed of 440 π rad/s. One such flywheel is a solid, uniform cylinder with a ..
A 2.62 kg mass attached to a light string rotates on the horizontal, frictionless table. The radius of the circle is 0.4207 m, and string can support a mass of 14.70 kg before breaking.
A ball on the porch rolls 60 {rm cm} to the porch's edge, drops 40 {rm cm}, continues rolling on the grass, and eventually stops 80 {rm cm} from the porch's edge.
An electron is then fired directly toward the center of the shell, from point P at distance r from the center of the shell (r >> R). What initial speed v0 is needed for the electron to just reach the shell before reversing direction.
A football is kicked with a speed of 20m/s at an angle of 40 degrees to the horizontal, how long is the football in the air
An 8cm^3 ice cube is floating in a 10x10x10 cm glass container completely filled with water, How much water is going to spill over when the ice melts
A barge on a still lake is moving toward a bridge at 10.0 m/s. When the bridge is 41.0 m away, the pilot slows the boat with a constant acceleration of -0.88 m/s2, Find the final velocity for each time using v = v0 + at
Two force vectors point in opposite directions and have the same magnitude. If their magnitudes are 36.5 Newton’s, then what is the magnitude of their sum?
An 8.m, 220 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50° angle with the ground. How far up the ladder can an 770 N person climb before the la..
A 1.86- sound wave travels through the pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as heart beats. The reflected sound is after that mixed with the transmi..
Explain how would the results have differed in this experiment if the pulley and of the track was lower that the other end of the track?
At what position is the third bead in equilibrium? Can it be in stable equilibrium.
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