Physics, 09.09.2019 20:30 amakayla57
You are an industrial engineer with a shipping company. as part of the package- handling system, a small box with mass 1.60 kg is placed against a light spring that is compressed 0.280 m. the spring has force constant 48.0 n/m . the spring and box are released from rest, and the box travels along a horizontal surface for which the coefficient of kinetic friction with the box is μk = 0.300. when the box has traveled 0.280 m and the spring has reached its equilibrium length, the box loses contact with the spring. (a) what is the speed of the box at the instant when it leaves the spring? (b) what is the maximum speed of the box during its motion?
Answers: 2
Physics, 21.06.2019 22:00
In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i.e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?
Answers: 2
Physics, 22.06.2019 02:30
The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?
Answers: 3
Physics, 22.06.2019 12:20
A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.
Answers: 2
You are an industrial engineer with a shipping company. as part of the package- handling system, a s...
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