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In a women's 100-m race, accelerating uniformly, Laura takes 1.87 s and Healan 3.12 s to attain their maximum speeds, which they each maintain for the rest of the race. They cross the finish line simultaneously, both setting a world record of 10.4 s. (a) What is the acceleration of each sprinter? aLaura = m/s2 aHealan = m/s2 (b) What are their respective maximum speeds vLaura,max = m/s vHealan,max = m/s (c) Which sprinter is ahead at the 6.20-s mark, and by how much? is ahead by m. (d) What is the maximum distance by which Healan is behind Laura? m At what time does that occur?
Coherent light with wavelength 603 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits.
If the elevator's descending speed is measured at 10 m/s at a given point, but its speed is decreasing by 2.7 m/s2, what is a force exerted by the scale.
A baseball pitcher can throw a ball with a speed of 40. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 30. What is the speed of truck.
A 73.0 kg construction worker stands at the far end of the beam.What is the magnitude of the torque about the point where the beam is bolted into place .
The Starship Enterprise returns from warp drive to ordinary space with a forward speed of 58 . To the crew's great surprise, a Klingon ship is 120 directly ahead, traveling in the same direction at a mere 30 .
You are trying to advance your shooting skills by shooting at a can on top of a fence post. You miss the can, and the bullet, moving at 207 m/s, is embedded 1.54 cm into the post when it comes to a stop. If constant acceleration is assumed, how long ..
A 2 kg ball is thrown straight up in the air. What is the net force acting on the ball when it reaches its maximum height?
What fraction of incident intensity is transmitted by system
What is the speed of the second asteroid? Now suppose that the first and second asteroids carry charges of 3.68 C and -3.68 C, respectively. How fast would the second asteroid have to be moving in order to occupy the same circular orbit as before?
A 40 cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. how far will a point on the edge of the wheel have traveled in this time. what is the ratio of the new force to the old force.
What focal length does the lens require
The middle C string on a piano is under a tension of 744 N. The period and wavelength of a wave on this string are 3.82 10-3 s and 1.26 m, respectively. Find the linear density of the string.
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