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Atrain travels 95 kilometers in 4 hours, and 61 kilometers in 1 hour. what is its average speed?
Answers: 1
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Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
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The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.
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Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?
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What is the single most important equation in all of physics?
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Atrain travels 95 kilometers in 4 hours, and 61 kilometers in 1 hour. what is its average speed?...
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