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Crossfire was a popular board game in which players attempted to propel a "puck" forward towards their opponet's side by shooting metal balls at it. Suppose the puck has a mass of 80 g and starts at rest, and each metal ball has a mass of 5 g and can be shot with a velocity of 2.25 m/s. What is the maximum speed a player can impart to the puck with a single shot, assuming the collision is elastic? (m/s)
A spectral line from the left side of Saturn's rings, as you see them, Which way (direction) is Saturn rotating, and why
A possible means of spaceflight is to place a perfectly reflecting aluminized sheet into Earth orbit and use the light from the sun to push this solar sail. what would be the force exerted on the sail
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. compute the final temperature of the coffee
n = 3.24 mol of Hydrogen gas is initially at T = 357 K temperature and pi = 2.79×105 Pa pressure. How much heat did the gas emit
When additional mass is added to the piston, the height of the piston decreases to 16.4 cm. Find out the new pressure applied by the piston.
A water tower, vented to the atmosphere, is drained by a pipe that extends to the ground. what is the absolute pressure in the drain pipe at ground level
A very light rigid rod with a length of 0.692 m extends straight out from one end of a meter stick. Determine the period of oscillation of the system
A circular loop in the plane of the screen lies in a 0.60 T magnetic field pointing into the screen. The loop's diameter changes from 18.5 cm to 6.0 cm in 0.50 s.
Chiana is stalking a fly of mass 0.10 g, but the fly gets caught in a spider's web. What is the value of the effective spring stiffness constant k for the web
Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Calculate the maximum force exerted on the baby by the planet Mars
If you hold a horizontal metal bar several centimeters above the ground and move it through grass, each leaf of grass bends out of the way. How can it exert enough force on a leaf of grass to shear it off
A rectangular block of wood floats in a calm lake. Show that, if friction is ignored, when the block is pushed gently down into the water and then released
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