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A spaceship travels in a circular orbit around a planet. It applies abrupt thrust and increases its speed by a factor f. If the goal is to change the orbit from a circle to a parabola, what should f if the thrust points in the tangential direction? Is your answer any dissimilar if the thrust points in some other direction? What is the distance of closest approach if the thrust points in the radial direction?
One kilomole of an ideal gas undergoes a free expansion, tripling it's volume. What is the change of entropy of the universe
Four equal masses m=0.5kg are placed on the corners of a square ofnegligible mass, whose sides are 0.4m long. What is the kinetic energy of the system
A solid cylindrical disk has a radius of 0.45 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk
A point mass m starts from rest and slides down the surface of a frictionless solid sphere of radius r. Find the angle at which the mass flies off the sphere
A battleship is using sonar (reflected underwater sound signals) to detect the presence of nearby submarines. How far away from the battleship is the submarine
The left face of a biconvex lens has a radius of curvatureof 11.5 cm, and the rightface has a radius of curvature of 20.0 cm. The index of refraction of glass is1.44.
A diver springs upward from a board that is 5 meters above the the water. determine her peak height measured above the water
Two identical springs (neglect their masses) are used to “play catch” with a small block of mass 110g (see the figure ). Spring A is attached to the floor and compressed 10.0cm with the mass on the end of it (loosely).
on an essentially frictionless horizontal ice rink a skater moving at 4.0 ms encounters a rough patch that reduces her
Water is moving at a speed of 7.55 m/s through a fire hose with an internal diameter of 5.99 cm. What is the diameter of the nozzle
A 50 newton horizontal force pushes a 10kg mass sitting on a horizontal surface. What is the acceleration of the mass
A heat transfer of 8.5x10^5 J is required toconvert a block of ice at -11 *C to water at 11 *C. What was the mass of the block of ice
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