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The cost of 11 pencils and 3 erasers is $50 and the cost of 8 pencils and 3 erasers is $38. Find the cost of each pencil and each eraser.
q1. boat a negotiates a curve whose radius is 352 m. boat b negotiates a curve whose radius is 160 m. each boat
A bicyclist climbs a 2.0km long hill that makes an angle of 7.0° with the horizontal. The total weight of the bike and rider is 750N. How much work is done on the bike and rider by gravity?
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
A solid disk rotates in the horizontal plane at an angular velocity of 0.0693 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
Traveling at a speed of 18.9 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. What is the speed of the automobile
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
a metal rod a and a metal sphere b on insulating stands touch each other they are originally neutral. a positively
A ball of mass 15.49 kg rests on a table of height 0.72 m. The tabletop is a rectangular glass plate of mass 12.13 kg, what is the force that the tabletop exerts on each leg
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 long. The bullets leave this barrel with a muzzle velocity of 334 .What is the acceleration of the bullet while it is in the barrel, assuming it to be constant?
how much power must you exert to horizontally drag a 30.0kg table 12.0m across a brick floor in 25.0s at constant
If a piece of irion (c=450 J/ kg C) at 65 C is dropped into 0.250 kg of ethyl acohol at 25 C and the final temperature of the two comes to 35 C what was the mass of the piece of iron
Waves moving on a lake have a speed of 2.8 m/s and a distance of 1.6 m between adjacent crests. Find the period of the wave motion
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