Physics, 09.11.2019 00:31 jackrider1598
Biologists use optical tweezers to manipulate micron-sized objects using a beam of light. in this technique, a laser beam is focused to a very small-diameter spot. because small particles are attracted to regions of high light intensity, the focused beam can be used to "grab" onto particles and manipulate them for various experiments. in one experiment, a 10 mw laser beam is focused to a spot that has a diameter of 0.67 μmpart a: what is the intensity of the light in this spot? part b: what is the amplitude of the electric field?
Answers: 2
Physics, 22.06.2019 12:00
Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.
Answers: 1
Physics, 22.06.2019 14:10
Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length
Answers: 1
Biologists use optical tweezers to manipulate micron-sized objects using a beam of light. in this te...
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