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An object's position is described by the following polynomial for 0 to 10 s. x = t^3 - 15t^2 + 54t Where x is in meters, t is in seconds, and positive is forward. Determine: the object's velocity as a function of time the object's acceleration as a function of time the object's maximum velocity the object's minimum velocity the times when the object returned to its starting position
a glass window pane has an area of 3.00m2 and a thickness of 0.600cm. if the temperature difference between its faces
A child on a sled reaches the bottom of a hill with a velocity of 10.0m/s and travels 25.0m along a horizontal straightaway to a stop. If the child and sled together have a mass of 60.0kg, what is the average retarding force on the sled on the hor..
As shown schematically in the figure below, the beam of light enters the glass perpendicular to the long side of the triangle, and is then internally reflected off the back wall of the prism, and again totally internally reflected from the bottom..
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 40°. For a speed of 35 m/s, at what value of the distance d should a drive..
What is the efficiency of a cyclical heat engine in which 65.0 kJ of heat transfer occurs to the environment for every 95.0 kJ of heat transfer into the engine
Mercury flows through a horizontal pipe 1.05 cm in diameter and 1.3 m long. determine the rate of flow through the tube
Calculate the distance that a plane wave of frequency 1 GHz must travel in free space in order for its phase to be retarded by 90°. Repeat the calculation for propagation in a lossless dielectric with relative permittivity of nine.
a 22.0uc point charge lies at the origin. find the electric field at the point 1.25 m 0.85m . express your answers
A package delivery service (we cannot say any names but their initials are F and E), has asked your help in designing a system to bring packages that have been sliding along delivery chutes before they get loaded onto the trucks. Find the speed of..
question a 43-kg girl is bouncing on a trampoline. during a certain interval after leaving the surface of the
What mass of steam at 100 C must be mixed with 150 get of ice at 0 C in a thermally insulated container to produce liquid at 40 C
One of the attempts to contain the spill involved pumping drilling mud into the well to balance the pressure of escaping oil against a column of fluid (drilling mud) having a density significantly higher than that of seawater and oil.
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