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a polymer molcule is 3.05μ m long. the ends of themoleculebecome singly ionized-negative on end end, positive on theother. the helical molecule acts like a spring & compresses1.5% upon becoming charged. determine the effective spring constant of the molecule?
Two flat surfaces are exposed to a uniform, horizontal magnetic field of magnitude 0.33 T. Determine the area of the first surface
A pulse from a ruby laser (lambda = 694.3 nm) has an average power of 20 MW and lasts 2.3 ns. What is the total energy of the pulse
A spherical ball with a radius of 2.660×10-1 m is completely submerged in a fluid that has a density of 1.081×103 kg/m3. What is the volume of the fluid displaced by the ball? What is the weight of the fluid displaced by the ball?
A 8 Omega resistor is connected to a 16 V battery. What is the current through the battery
Find the final velocity of the two balls if the ball with velocity v2i = -21.2 cm/s has a mass equal to half that of the ball with initial velocity v1i = +27.6 cm/s
Two disks are rotating about the same axis. Disk A has a moment of inertia of 3.7 kg · m2 and an angular velocity of +7.0 rad/s. Disk B is rotating with an angular velocity of -9.6 rad/s. The two disks are then linked together without the aid of a..
Two automobiles, each of mass 900 kg, are moving at the same speed, 15 m/s, when they have an inelastic collision.(a) In what direction and at what velocity does the wreckage move if one car was driving north and one south? (b) In what direction a..
A person drives a car around a circular cloverleaf with a radius of 64 m at a uniform speed of 10 m/s. What is the acceleration of the car
A heavier mass m1 and a lighter mass m2 are 20.0 cm apart and experience a gravitational force of attraction that is 9.00 10-9 N in magnitude. Determine the value of each individual mass
A skier moving at 20 m/s down a 30.0 degree slope encounters a region of wet snow, with a coefficient of friction u= .740. How far down the slop does he go before stopping
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
In a circus performance, a monkey on a sled is given an initial speed of 4.6 m/s up a 23? incline. How far up the incline does the sled move
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