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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 1013 Hz. If the oxygen atom at this site is chemically reoplaced with a sulfur atom, the spring constant of the bond is unchanged (sulfur is just below oxygen in the Period Table). Predict the frequency for a DNA molecule after the sulfur substition
A hunter aims directly at the target (on the same level) 115 m away. If the bullet leaves the gun at a speed of 205 m/s, by how much will it miss target.
A 2180kg satellite used in a cellular telephone network is in a circular orbit at a height of 750km above the surface of the earth. What is the gravitational force on the satellit
Find an angular velocity of the tire at the marker. Find also the linear speed of the point of contact of the tire with the pavement at the marker.
The bullet remains in the block, and after the impact the block lands d = 2.2 m from the bottom of the table. Identify the initial speed of the bullet.
A ray of light enter a light fiver at an angle of 15 degreeswith the long axis of fiver. calculate the distance the light raytravels between successive reflections off the sides of the fiber.the fiber has an index of refraction of 1.6 and 10^-4 m ind..
Describe the arrangment of circuit elements that is called a voltage divider and the relationship among the various potential differences for that arrangement.
The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 601 mW/ m2
The assembly made with massless strings attached to balls. Ball A (m=0.3kg) is released from height 0.2m above ball B (m=0.5kg) also at rest. What max height does each ball achieve after collision
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.542, How much force is needed to begin moving the book
Earth's atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space. What would be the electric current in amperes
A slender, 400- g bar magnet 10.0 cm long has a magnetic moment of 5.60 Am2. It is held at an angle of 45o to the direction of a uniform magnetic field. What is the magnitude of the magnetic field
A nylon guitar string has a linear density of 7.0 g/m and is under a tension of 150 N. The fixed supports are distance D = 90.0 cm apart. calculate the frequency of these traveling waves
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