An instrument is thrown upward with a speed of 15 m/s on the surface of planet X where the acceleration due to gravity is 2.5 m/s2 and there is no atmosphere. How long does it take for the instrument to return to where it was thrown?
Read DetailsA highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the curve is effectively frictionless. What is the speed with which to take the curve without tending to slide either up or down the surface of the road?
Read DetailsA hockey puck slides off the edge of a platform with an initial velocity of 20 m/s horizontally. The height of the platform above the ground is 2.0 m. What is the magnitude of the velocity of the puck just before it touches the ground? You can neglect air resistance.
Read DetailsSupply Chain Management Charlotte sells replica statues of the famous David sculpture in Florence, Italy. When ordering more from her Chinese manufacturer, she has to pay a $20 fee. She notices demand is constant at 100 units a month. Due to taxes and regulations, she has determined it costs her $.50 per unit per year to hold these statues in inventory. She wants to balance the costs of carrying the replicas with the cost of ordering more. How many should she order each time from the Chinese manufacturer? This Problem Counts 3 Points
Read DetailsConsider both Statements. Statement 1. For exponential smoothing if the alpha value is high, there will be a higher sensitivity to differences in the recent actual and forecasted data. Statement 2. The Tracking Signal tells us how well the forecast is tracking a trend.
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