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A molecule of DNA (deoxyribonucleic acid) is 2.06 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.93% upon becoming charged. Decide the effective spring constant of the molecule.
a particle is projected with a velocity of 900ft/sec at anelevation of 60 degrees to the horizontal from the foot of a planeof inclination 30 degrees, estimate the range on the inclined plane
A yo-yo-shaped device mounted on a horizontal frictionless axis is used to lift a 26 kg box as shown in the figure. The outer radius R of the device is 0.46 m, and the radius r of the hub is 0.21 m. When a constant horizontal force of magnitude 17..
A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward. Where will the wrench hit the deck
Following the procedure in the video, create three traces of the pendulum motion of the cup. Compare the three traces for amplitude, wavelength, and frequency.
a grandfather clock is controlled by a swinging brass pendulum that is 0.90 m long at a temperature of 30.degc.a what
In an exercise to heat up some cold, hard cash, a coin with a massof 6.25 g that has been kept in the freezer at a temperature of-18.05 deg-C is taken out and placed into a thermos containing 14.3ml of warm water at 35.00 deg-C.
If the reproduction constant is 1.00021 for a chain reaction in a fission reactor, by what factor does the reaction rate increase in one minute
a light-year is the distance light speed 2.998 108 ms travels in one year.a how many meters are there in 16.0
during a circus performance a 71.2-kg human cannonball is shot out of a 16.8-m-long cannon. if the human cannonball
It is necessary to determine the specific heat of an unknown object. The mass of the object is 170.0 g. Find the specific heat of the object
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 475 kg. find the length of time the car could run before the flywheel would have to be brought back up to speed
An astronaut at rest on Earth has a heartbeat rate of 72 beats/min. When the astronaut is traveling in a spaceship at 0.90c.
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