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A molecule of DNA (deoxyribonucleic acid) is 2.16 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 1.09% upon becoming charged. Determine the effective spring constant of the molecule.
1 if a charge particle move in a straight line and there no other forces on it except possibly from a magnetic field
A 19-kg chandelier is suspended from the ceiling by four vertical steel wires. Each wire has an unloaded length of 5 m, how far do the wires stretch
The height of an empty can is H, and the mass M. The mass of a full can is m, What is the center of mass of the can as a function of x? h is the height from the bottom to the surface
what are the currents that the block can carry
An airplane is flying with a velocity of 92.0 m/s at an angle of 23.0 above the horizontal. How far from the dog will the suitcase land
A small bird's wings can undergo a maximum displacement amplitude of 5.9 cm. what is the oscillation frequency of the wing tips
A charged particle is moving horizontally westward with a velocity of 3.5 × 106 m/s in a region, What is the charge on the particle
A body is vibrating with the simple hormonic motion withamplitude of 15 cm and frequency of 4 Hz copute. maximium velocuty and maximium acceleration
An elevator (mass 5000 kg ) is to be designed so that the maximum acceleration is 6.20×10?2 g. What is the minimum force the motor should exert on the supporting cable
According to a report on traumatic brain injury, the force that a professional boxer's fst exerts on his opponent's head is equivalent to being hit with a 5.9kg bowling ball traveling at 8.9m/s that stops in 0.018s. Determine the average force that t..
a thin metallic spherical shell of radius 40.1 cm has a total charge of 7.65 ?c uniformly distributed on it. at the
a pipeline is assembled in horizontal cylindrical blocks 10 m long and 1.2 m in diameter. inside one block the distance
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