Mass horizontally on a frictionless table
A system is devised to exert a constant force of 8 N on an 80-kg body of mass initially at rest. The force pushes the mass horizontally on a frictionless table. How far does the body have to be pushed to increase its mass-energy by 25%?
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A sailboat is being propelled westerly by the wind at a speed of 4 m/s. If the current is flowing at 2 m/s to the northeast, where wil the boat be in 10 minutes in respect to the starting position?
What is the magnitude of the potential difference DeltaV between the two spheres?
A spelunker enters a cave. Consider the entrance to the cave the origin. the spelunker then moves east for 100 ft, then moves 100 ft at 60 degrees North of West before finally moving 100 ft at 30 degrees South of West.
The number of bank robberies that occur in a large North American city is Poisson distributed with a mean of 1.8 per day. Find the probabilities of the following events
You conducted a t-test. You found a statistically significant difference between your groups even though your sample size was relatively small. Upon conducting a post hoc power analysis you found that your actual power was 0.65. What should you do
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Neglecting frictional forces on the trailer, determine the following. (Indicate the direction with the sign of your answer. Take the forward direction to be positive.) the net force on the trailer
The glass core of an optical fiber has an index of refraction 1.61. The index of refraction of the cladding is 1.47. What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?
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