What is the initial velocity
A golfer hits a ball, giving it a maximum height of 20 meters. The ball lands 130 meters away at the level which he hit it. What is the initial velocity (neglect air resistance)?
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The output of a certain laser pointer consists of a beam with uniform irradiance across the beam's cross section. Assume a beam power of 1.00mW and beam diameter of 1.00mm. (a) Calculate the beam irradiance.
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What minimum initial speed would be required to make it safely across the canyon? Express your answer in m/s and mph. Ignore air drag.
A spherical tank for storing liquid oxygen on the space shuttle is to be made from stainless steel of 0.80 m outer diameter and 5 mm wall thickness. The boiling point and latent heat of vaporization of liquid oxygen are 90 K and 213 kJ/kg, respect
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If a ball is horizontally projected from a height (y) of 0.83m above ground. How long does it take to hit the ground, if g is 9.8m/s^2? (Hint: Assume the initial vertical velocity to be zero and use -y=-(1/2) gt^2).
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