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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 25g ball is fired with an initial speed v1 toward a 150g ball that is hanging motionless from a 1.30m string. The balls have a perfectly elastic collision. As a result, 150 g ball swings out until the string makes an angle of 37° with vertical. ..
Three point charges, A = 1.60 µC, B = 6.90 µC, and C = -3.90 µC, are located at the corners of an equilateral triangle as in the figure above. Find the magnitude and direction of the electric field at the position of the 1.60 µC charge.
At the instant of the figure, a 1.4 kg particle P has a position vector r of magnitude 1.1 m and angle ?1 = 45° and a velocity vector v of magnitude 3.8 m/s and angle ?2 = 30°. What is the torque acting on the particle about the origin
At the top of a 30m hill is a 5kg mass. It is loaded into a spring cannon. what was the gravitational potential energy of the mass with respect to the bottom of the hill
A -5.00 C point charge (Q1) is placed at the center of a conducting spherical shell with inner radius a and outer radius b. A total of +3.00 C charge(Q2) is placed on the conducting shell itself. What is the total charge on the outer surface of th..
A roller-coaster car has a mass of 492 kilogram when fully loaded with travelers. If the car has a speed of 20.3 m/s at point A, find the force exerted by the track on the car at this point
Two equal-mass stars maintain a constant distance apart of 4.8E10 m and rotate about the point midway among them. They make one revolution every 2.6 yr. What is the mass (in kg) of each star?
The speed of a passenger train is 16mph faster than the speed of a frieght train. The passenger train travels 330 miles in the same time it takes the frieght train to travel 250miles. find the speed of each train.
q1. light of wavelength 443 nm in air enters a fishbowl filled with water and then exits through the crown-glass wall
Q:) If f(x)=4-7x and g(x)=x^2 + 1 find (f g)(x) and (g f)(x)
A race track isconstucted such that two arcs of radius 35.0m and 70.0m are ateither end and joined by straight track. Find the centripetal force the diriver feels around the 70.0mcurve
A force vector points at angle of 47 degrees above the +x axis. It has a y component of 287 Newton's. Find the magnitude of the force vector
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