Physics, 04.12.2019 03:31 laqu33n021
Two objects, x and y, are held at rest on a horizontal frictionless surface and a spring is compressed between them. the mass of x is 2/5 times the mass of y. immediately after the spring is released, x has a kinetic energy of 50 j and y has a kinetic energy of:
Answers: 2
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A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
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Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
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Two objects, x and y, are held at rest on a horizontal frictionless surface and a spring is compress...
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