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Chloe has a vertical velocity of 3 m/s when she leaves the 1 m diving board. At this instant, her center of gravity is 2.5 m above the water.
a. How high will Chloe go?
b. How long will Chloe be in the air before she touches the water? Assume that she first touches the water when her center of gravity is 1 m above the water.
Scientists have recently shown that a sample of cocaine can be traced to its country of origin by measuring the ration of carbon-13 to nitrogen-15 (both naturally occuring, stable nuclides) in the cocaine sample.
how far from the edge f the dock can theboy move until the plank is just on the verge of tipping? Explain how can the boy test this conclusion without falling in the water?Explain
A 115 V fish-tank heater is rated at 120 W, Calculate the current through the heater when it is operating
A rifle is aimed horizontally at a target 60 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time
A 75-kg piece of metal has specific heat 430 J/kg°C and is initially at 950°C. To cool it down, it is dunked into 710 kg of oil that has a temperature of 32°C and specific heat of 2700 J/kg°C. Assuming that heat flows only between the oil and the m..
The outside mirror on the passenger side of a car is convex and has a focal length of -5.4 m. Find the image distance of the truck
A bird flies 3.05 km due west and then 3.26 km due north. Another bird flies 1.03 km due west and 1.16 km due north. Determine the angle with respect to the 2nd bird's displacement vector
A stationary radar operator determines that a ship is 17 km south of him. An hour later the same ship is 21 km southeast. If the ship moved at constant speed and always in the similar direction, what was its velocity during this time.
A sodium surface, which has a work function of 2.46eV is illuminated with a wavelength = 300nm light. What is the deBroglie wavelength of these electrons
A stone of mass 0.31 kg is tied to a string of length 0.85 m and is swung in the horizontal circle with speed v. The string has a breaking-point force of 90 N. What is the largest value v can have without string breaking.
Some cell walls in the human body have a layer of negative charge on the inside surface and a layer of positive charge of equal magnitude on the outside surface, Estimate the total electric-field energy stored in the wall of a cell of this size
A 775-g object undergoes an acceleration given by = (2.00 ? + 5.00 ?) m/s , find the resultant force acting on the object
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