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In the school cafeteria, a trouble-making child blows a 10.0 g spitball through a 30.0 cm straw. The force (F) in Newtons, of his breath as a function of the distance along the straw (x) in me-ters, can be modeled as a linearly decreasing function. The force decreases by half along the entire length of the straw. Assume there is negligible friction and the straw is held horizontally.
(a) Sketch a plot of the force of his breath as a function of position along the straw, labeling the force at x = 0 as F0.
(b) If the spitball begins from rest and leaves the straw with a speed of 15 m/s, how much work is done on the spitball.
(c) What was the maximum force on the spitball?
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While surveying a cave, a spelunker follows a passage 190{\rm m} straight west, find the magnitude and direction of the fourth displacement
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A sound pulse has a power of 893.1 watts. It is radiating outwards from a point and at the time of observation is a radius of 7861.6 m from that point
Two capacitors, C1 = 2x10^-6 F and C2 = 4x10^-6 F, are connected in series with an 18 V battery. Find the final charge and potential difference for each capacitor
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It runs out of fuel at the end of the 4.97 s but does not stop. Explain how high does it rise above the ground?
Is the momentum change identical? If not, the ball would have the larger momentum change throughout the collision with the wall?
The ball thrower, who has a mass of 100 kg, can throw a 500 g ball with a speed of 10 m/s. What constant force must the athlete exert on the ball
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