Physics, 26.09.2019 03:30 sadelshariff
Apitching machine is programmed to pitch baseballs horizontally at a speed of 83 mph . the machine is mounted on a truck and aimed backward. as the truck drives away from a man at a speed of 65 mph , the machine shoots a ball towards him.
a truck drives away from a man holding a baseball glove. a pitching machine in the bed of the truck pitches a baseball towards the man.
determine the correct relative speed for each object pair.
the speed of the pitching machine relative to the truck
the speed of the pitched ball relative to the truck
the speed of the pitching machine relative to the man
the speed of the pitched ball relative to the man
Answers: 2
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Physics, 22.06.2019 18:00
Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.
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Apitching machine is programmed to pitch baseballs horizontally at a speed of 83 mph . the machine i...
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