Biophysicists use an arrangement of laser beams called optical tweezers to manipulate microscopic objects. In a...
Biophysicists use an arrangement of laser beams called optical tweezers to manipulate microscopic objects. In a particular experiment, optical tweezers exerting a force of 0.373 pN were used to stretch a DNA molecule by 2.30 μm.What was the spring constant of the DNA?
Express your answer with the appropriate units
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Biophysicists use an arrangement of laser beams called
optical tweezers to manipulate microscopic objects. In a...
Biologists use optical tweezers to manipulate micron-sized objects using a beam of light. In this technique,...
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 0.82 μm. A) What is the intensity of the...
Experiments using "optical tweezers" measure the elasticity of individual DNA molecules. For small enough changes in...
Experiments using "optical tweezers" measure the elasticity of individual DNA molecules. For small enough changes in length, the elasticity has the same form as that of a spring. A DNA molecule is anchored at one end, then a force of 1.5 nN (1.5 times 10^-9 N) pulls on the other end, causing the molecule to stretch by 5.0 nm (5.0 times 10^-9 m),as shown in the figure.(p.s. The source of the external force is the laser beam that traps and...
Experiments using "optical tweezers" measure the elasticity of individual DNA molecules. For small enough changes in length, the elasticity has the same form as that of a spring. A DNA molecule is anchored at one end, then a force of 1.5 nN (1.5 times 10^-9 N) pulls on the other end, causing the molecule to stretch by 5.0 nm (5.0 times 10^-9 m),as shown in the figure.(p.s. The source of the external force is the laser beam that traps and...
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