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An oxygen atom at a particular site within a DNA molecule can be made to execute simple harmonic motion when illuminated by infrared light. The oxygen atom is bound with a speing-like chemical bond to a phosphorous atom is bound which is rigidly attached to the DNA backbone. The oscillation of the oxygen atom occurs with frequency ƒ=3.7 x 1013Hz. If the oxygen atom at this site is chemically replaced with a sulphur atom, the spring constant of the bond is unchanged (sulphur is just below oxygen in the Period Table). Predict the frequency for a DNA molecule after the sulphur substition.
A paper filled capacitor is charged to a potential difference of 2.1 V and then disconnected from the charging circuit. The dielectric constant of the paper is 3.7. Find the resulting potential difference off the capacitor
A rock is projected from the edge of the top of a building with an initial velocity of 12.2 m/s at an angle of 53? above the horizontal. How tall is the building
Does the growth of a plant or animal violate the second low.
A flywheel of mass 189 kg has an effective radius of 0.61 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel). What is the applied torque on the flywheel
The distance between successive crests of a sound wave is 33m. what is the approximate frequency of the sound wave
The blades in a blender rotate at a rate of 6900rpm. What is the angular acceleration as the blades slow down
A solid block is suspended from a spring scale. If the reading on the scale when the block is completely immersed in water is 34.0 N, what are the block's volume and density
a subway train starts from rest at a station and accelerates at a rate of for 14.0 . it runs at constant speed for 70.0
what is the translational rms speed of carbon dioxide molecules.
A high diver leaves the end of a 5.0 m high diving board and strikes the water 1.4 s later, 2.6 m beyond the end of the board. what is the angle with which she enters the water
Describe a world where the opposite of Lenz's law applies, that is where the EMF or current is in the same direction to the direction that caused it .
two ping-pong balls each have a mass of 2.7g and carry a net charge of 0.430muc. one ball is held fixed. at what height
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