Physics, 17.09.2019 21:00 dijonmckenzie3
Assuming the object begins its motion from rest, and at an initial height h from the surface of the earth: a) calculate the velocity of the object as a function of time using the laplace transform approach. b) does the object reach a terminal velocity? if so, what is this terminal velocity? note that the terminal velocity is the (constant) velocity reached after a sufficiently large time. c) compare the solution obtained for velocity in a) with the solution for the case where b = 0 (free fall under gravity without friction). provide rough sketches of the solutions for both cases.
Answers: 2
Physics, 22.06.2019 04:00
When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative
Answers: 2
Physics, 22.06.2019 05:50
Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?
Answers: 3
Physics, 22.06.2019 14:40
A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.
Answers: 1
Assuming the object begins its motion from rest, and at an initial height h from the surface of the...
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