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You can exert a total of 75 J to launch a 0.75 kg projectile up a 5 m long ramp. The coefficient of kinetic friction between the projectile and the ramp is 0.2 and the ramp is set at a 60° angle relative to the ground.
What is the total distance (in m) traveled by the projectile, as measured from its initial position at the bottom of the ramp.
Also, What energy (in J) must you exert for the projectile to travel twice the distance?
How fast would javelin (normally 2.5 m long) have to be going (relative to an observer) to appear 20% shorter? (2 m long)
A viewing window in the Atlanta aquarium is 55 inches wide and 46 inches high. what is the outward force on the window
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find the velocity of their center of mass before the collision.
The ferromagnet gadolinium has a Curie temperature of 298 K and each atom has J=7/2 and g=2. Find the value of the molecular field at low temperatures
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One cubic meter of water flowing over Niagara Falls in New York drops 96.6 meters. how much heat energy would the water have
A female orb spider has a mass of 0.45g . She is suspended from a tree branch by a 1.0m length of 0.0020-mm-diameter silk. If you tap the branch and send a vibration down the thread, how long does it take to reach the spider
a small ball bearing is illuminated with blue light from an argon ion laser (4880 A.) What is the diameter of the ball bearing
A stiff, 15cm -long tube with an inner diameter of 2.5mm is attached to a small hole in the side of a tall beaker. What is the volume flow rate through the tube
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