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A speeding motorist zooms through at 75km/h, without noticing a police car by the roadside. The police car immediately begins to chase the speeding motorist with an acceleration of 7.0 m/s^2.
a) Calculate the time it takes the police car to catch the speeding motorist.
b) Calculate how far the police car has to travel to catch the speeding motorist
c) Calculate the speed of the police car when it catches the speeding motorist.
A 50.0-g bullet is shot straight upward with a muzzle speed of 350 m/s. Find the maximum height the bullet can reach
If he struck a ball with the a speed and launch angle that would result in a maximum 120m horizontal range on Earth, how far would it go?
Four rays of light are incident on a surface of water. Their angles of incidence are 20, 30, 45, y 60 degrees. Calculate the angle of refraction for each ray
Consider a parallel-plate capacitor with .30m by .50m-rectangular plates separated from eachother by .010mm. this capacitor has a capacitance of 280nF, find the dielectric constant of this capacitor
A researcher notices that the frequency of a note is emitted by a car horn appears to drop from 284 Hz to 266 Hz as the car passes him. What value does he obtain for the speed of the car
A projectile is fired in such a way that its horizontal range is equal to 4.5 times its maximum height. What is the angle of projection?
Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag) force that is linearly proportional to the velocity of the object. What is the terminal speed for this object in this liquid
The electric field everywhere on the surface of a thin, spherical shell of radius 0.795 m is of magnitude 852 N/C, What is the net charge within the sphere's surface
At this point, person doing the laundry opens the lid, and a safety switch turns off the washer. The tub smoothly slows to rest in 11-s. Through how many revolutions does the tub turn while it is in motion.
A violinist is trying to tune her instrument to 512 Hz, but it is at 491. By what percent does she have to change the tension to tune the violin? Answer A) 1.2% B) 4.1% D) 8.7% E) 12.1% F) 14.5%
Driving in your car with a constant speed of 12 {rm m}/{rm s}, you encounter a bump in the road that has a circular cross-section. If the radius of curvature of the bump is 35 {rm m}, find out the apparent weight of a 69 person in your car as you ..
What is the average force felt by a 0.06 kg tennis ball if it strikes the racket at a speed of 30m/s and leaves the racket with a speed of 50m/s in the opposite direction
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