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A typical car under hard braking loses speed at a rate of about 6 m/s2. The typical reaction time to engage the brakes is 0.50 s. A local school board sets the speed limit in a school zone such that all cars should be able to stop in 5.0 m. What maximum speed does this imply for a car in the school zone?
Suppose |L| = 10 and r = 2i + 3j + 4k and |p| = 10. What is the angle between the radius and momentum vectors
The safe slides with a constant speed if Clyde pushes from behind with 420 {rm N} of force while Bonnie pulls forward on a rope with 285 {rm N} of force. Illustrate what is the safe's coefficient of kinetic friction on the bank floor?
A car accelerates uniformly from rest and reaches a speed of 23.7 m/s in 8.43 s. The diameter of a tire on this car is 51.9 cm. What is the final angular speed of a tire in revolutions per second
a mass-spring system has k=54.4 N/m and m=0.465kg. Find the period of its simple harmonic motion and Find the frequency of its simple harmonic motion
A mechanic pushes a 3.4 103 kg car from rest to a speed of v, doing 5000 J of work in the process. During this time, the car moves 26.0 m. find the horizontal force exerted on the car
find the angular speed after the grindstone. what must be its minimum mass so that material on its surface remains in place during the rapid rotation.
an electron with a speed of 6.00106 ms collides with an atom the collision excites the atom from its ground state 0ev
A battery with EMF 6.0 Volts and internal resistance 0.1 ohms is connected by a long wire to a resistor R = 8.0 ohm. If the current in the solenoid is I = 200 Amps and is constant, then what is the current through the 8 ohm resistor
A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 16rpm in 10.0s. What force is required at the edge
The Zo boson, discovered in 1985, is the mediator of theweak nuclear force, and it typically decays very quickly. What is the lifetime of this particle
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe
A ball rolls off horizontally from a table that is 1.25m with an speed of 2.31m/s. How far away is the ball from the base of the table when it hits the floor?
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