Engineering, 07.06.2020 15:57 00manray
A girl operates a radio-controlled model car in a vacant parking lot. The girl's position is at the origin of the xy coordinate axes, and the surface of the parking lot lies in the x-y plane. The motion of the car is defined by the position vector r = (2 + 2t2)i + (6 + t3 )j where r and t are expressed in meters and seconds, respectively. Determine (a) the distance between the car and the girl when t = 2s, (b) the distance the car traveled in the interval from t = 0 to t = 2s, (c) the speed and direction of the car's velocity at t = 2s, (d) the magnitude of the car's acceleration at t = 2s.
Answers: 3
Engineering, 04.07.2019 12:10, Ryantimes2
On a average work day more than work place firs are reorted
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Engineering, 04.07.2019 18:10, viicborella
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
Answers: 1
Engineering, 04.07.2019 18:10, yasminothman02
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
Answers: 3
Engineering, 04.07.2019 18:10, caitlynnpatton1208
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
A girl operates a radio-controlled model car in a vacant parking lot. The girl's position is at the...
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