Physics, 10.12.2019 13:31 xuzixin2004
You drop a single coffee filter of mass 1.5 grams from a very tall building, and it takes 49 seconds to reach the ground. in a small fraction of that time the coffee filter reached terminal speed. (a) what was the upward force of the air resistance while the coffee filter was falling at terminal speed? fair = 0.0147 n (b) next you drop a stack of 3 of these coffee filters. what was the upward force of the air resistance while this stack of coffee filter was falling at terminal speed? fair = 0.0441 n (c) again assuming again that the stack reaches terminal speed very quickly, about how long will the stack of coffee filters take to hit the ground? (hint: consider the relation between speed and the force of air resistance.) fall time is approximately 28.3 s additional materials section 7.10 practice another version home my assignments extension request copyright © 2019 cengage learning, inc. all rights reserved
Answers: 2
Physics, 22.06.2019 05:30
Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted
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Physics, 22.06.2019 05:30
Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue
Answers: 2
Physics, 22.06.2019 17:00
Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?
Answers: 2
Physics, 22.06.2019 18:50
Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle can be assumed at 30 deg
Answers: 2
You drop a single coffee filter of mass 1.5 grams from a very tall building, and it takes 49 seconds...
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