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Question: A sprinter starts from rest and accelerates to her maximum speed of 9.5 m/s in a distance of 9.3 m.
(a) What was her acceleration, if you assume it to be constant?
Two rowers, who can row at the same speed in still water, setoff across a river at the same time. Which rower reaches the opposite side first
An "energy bar" contains 18g of carbohydrates. If the energy bar was his only fuel, how far could a 68kg person walk at 5km/hr
What is the gravitational force between two 20 kg iron balls separated by a distance of 0.5m? The gravitational constant is G = 6.67×10^-11 N-m^2/kg^2
A light spring-gun projectile launcher is mounted on an 0.493 kg air track glider. What is the speed of the air-track glider after the gun is fired
When laser light of wavelength 633.4nm passes through a diffraction grating, the first bright spots occur at 17.8 degrees from the central maximum. At what angles do the third bright spots occur
A package falls out of an airplane that is flying in astraight line at a constant altitude and speed. If you could ignorethe air resistane, what would be the path of the package asobserved by the pilot
An object weighing 338 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 302 N. Immersed in oil; object weighs 313 N. Calculate the density of the object.
A 110 ball and a 250 ball are related by a 38--long, massless, rigid rod. The balls rotate about their center of mass at 150 what is the speed of the 110 ball.
After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 44.0. He finally comes to rest 22.0 below the level of the bridge. Illustrate what is the spring stiffness constant?
A 55-kg swimmer is standing on a stationary 210-kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +4.6 meter per second relative to the shore. Calculate the recoil velocity that the raft would have if there were ..
On a hot day, the temperature of a road surface may rise to over 50 degrees C. calculate the net radiation flux from the road to the air
What is the width of a single slit that produces its first minimum at 60.0° for 580 nm light, Using the slit from part (a), find the wavelength of light that has its first minimum at 62.5°
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