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A molecule of DNA (deoxyribonucleic acid) is 2.04 µm long. The ends of the moleculebecome singly ionized: negative on one end, positive on the other.The helical molecule acts like a spring and compresses 1.13% upon becomingcharged. Determine the effective spring constant of the molecule.
The volume flow rate of the water supplied by a well is 1.53 x10-4 m3/s. The well is 31.8 m deep. Find the pressure difference the pump must maintain
Adjacent antinodes of a standing wave on a string are 15.0cm apart. A particle at an antinode oscillates in simple harmonic motion with amplitude 0.850 cm and period 0.0750 s.
A student holds a laser that emits light of wavelength 633nm. The beam passes through a pair of slits separated by 0.3mm, Find the speed of the first-order maxima on the screen
Two railroad cars, each of mass 6500kg and traveling 94 km/h in oppositedirections, collide head-on and come to rest. How much thermal energy is produced in this collision
Two particles execute simple harmonic motion of the same amplitude and frequency along close parallel lines. What is their phase difference
question1a ball drops from rest from an unknown height h. the time it takes for the ball to hit the ground is measured
Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.
one end of a wire is attached to a ceiling and a solid brass ball is tied to the lower end. the tension in the wire is
apportionment problemyou are a census officer in a newly democratic nation and you have been charged with using the
In 6.00 days the number of radioactive nuclei decreases to one-eight the number present initially. What is the half-life (in days) of the material
a uniform electric field of 1.0 nc is set up by a uniform distribution of charge in the xy-plane. what is the electric
Consider a container insulated from the environment and divided into two sections by a very thin, stiff membrane, In which direction heat energy is transferred
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