Answers: 1
Physics, 21.06.2019 19:10
Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745Β°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 Γ 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.
Answers: 1
Physics, 22.06.2019 13:00
At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius Οa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature Οr of its path, both as observed by the nonrotating skydiver.
Answers: 3
Physics, 23.06.2019 09:20
How does an increase in temperature generally affect the rate of a reaction?
Answers: 3
Physics, 24.06.2019 00:20
Which elements are not noble gases? check all that apply a.) neon b.) helium c.) lithium d.) calcium
Answers: 2
How many mm is 97.25cm?...
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