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a 30-cm tall (height) ad 4.0 in diameter plastic tube has a sealed bottom. The mass of the tube if 30.0g. Then a 250g of lead pellets are poured into the bottom of the tube and the tube is lowered into the liquid. The tube floats with 5.0cm extending above the surface. What is the density of the liquid?
How fast can this car round a second curve of radius 320m?
A tennis player hits a 1.45 kg tennis ball with a racket of mass 2.5 kg. what impulse did he imply on the ball
You have been asked to design a "ballistic spring system" to measure the speed of bullets. Find an expression for the bullet's initial speed
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 52° above the horizontal. The end of the ramp is 1.4 m above the ground. how far is this point horizontally from the end of the ramp
An air puck of mass m1 = 0.15 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
An initially stationary box of sand is to be pulled across a floor by means of a cable in which the tension should not exceed 754 N. what is the weight of the sand and box in that situation
Consider two wind instruments with pipes of the same length, but one is open and the other is closed on one end. what is the fundamental frequency of the closed pipe
string under a tension of 50.5 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.3 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
A suspension bridge is 62.0 m above the level base of a gorge. If you drop the stone, how long does it take for it to fall to the base of the gorge
A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, Find the resulting angular velocity of the disk
What is the rotational kinetic energy of the Earth? Use the moment of inertia you calculated in Part A rather than the actual moment of inertia given in Part B.
A 740g, 40cm long rod is free to rotate about a frictionless axle at one end. What is the rod's angular velocity immediately after the blow
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