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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)
What inductance must be connected to a 25 pF capacitor in the oscillator capable of generating 480 nm (i.e., visible) electromagnetic waves.
a proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths?
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 870 N person climb before the ladder begins to slip?
A box of textbooks of mass 25.3kg rests on a loading ramp that makes an angle a with the horizontal. find the acceleration once the box has begun to move
A 4.0cm tall apple is 20cm in frount of a plano-convex lens of focal length 75cm. Find the location of the image of the apple
A solenoid 10.0 cm in diameter and 69.9 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. What power must be delivered to the solenoid
On an unknown planet with radius 1000km a future astronaut drops a rock from his hand 2m off the ground. The rock takes 2s to reach the ground. What speed did the cannon launch the ball
A car traveling at a speed of 18 m/s crashes into a solid concrete wall. The driver has a mass of 90 kg. What is the change in momentum of the driver as he comes to a stop
Regarding the Earth and a cloud layer 700 m above the Earth as the "plates" of a capacitor, What is the maximum charge the cloud can hold
You have decided to make a large cooler to store meat. Calculate the net rate of heat flow per second out of the cooler if the interior temperature is 5 C and the exterior temperature can be 45 C
A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. Illustrate what is the force constant of the spring?
A syringe with a barrell with a diameter of 0.20 m is filled with water. What is the speed of the jet of water out of the syringe
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