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A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. The ball approaches the cushion with a velocity of +2.1 m/s and rebounds with a velocity of -2.0 m/s. The ball remains in contact with the cushion for a time of 3.3x10^3 s. What is the average net force (magnitude and direction) exerted on the ball by the cushion?
A rifle with a weight of 20 N fires a 4.0-g bullet with a speed of 210 m/s. Find the recoil speed of the rifle
A ray of light traveling in air enters benzene contained in a rectangular tank whose walls are made of ice. The bottom of the tank is a mirror. What angle does the ray make with the horizontal (normal) when it reaches the side of the tank
A ball is thrown horizontally from a 16 -high building with a speed of 9.0. How far from the base of the building does the ball hit the ground
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, respectively. What is the electric potential energy of this system of charges
A hypodermic syringe contains a medicine with the density of water, Determine the speed of the medicine as it leaves the needle's tip
If you stand on a pogo stick, you note that its spring-loaded foot is pushed in about 18 cm. what is your approximate oscillation frequency
A 720 nm light bean in air hits the flat surface of a certain plastic and the bean is split into a reflected ray and a refracted ray. what is the index of refraction of the plastic
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
when comparing the experimental ir spectra to the literature ir spectra of the same compound the positions and
A diverging lens has a focal length of 53 cm.If an object is 40 cm from the lens, What is the magnitude of the magnification for this lens
Paul is what most people consider a "jock." He is the captain of both the football and wrestling team and he also plays hockey. Upon entering Mrs. Title's class she figured that he would not take course seriously nor would he excel in class. She p..
A fish takes the bait and pulls on the line with a force of 1.8 N. The fishing reel, which rotates without friction, What is the angular acceleration of the fishing reel
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