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It's your birthday, and to celebrate you're going to make your first bungee jump. You stand on a bridge that is 100 m above a river and attach a 30 m long bungee cord to your harness. A bungee cord, for practical purposes, is just a long spring, and this cord has a spring constant of 48 N/m. Assume that your mass is 85 kg. After a long hesitation, you dive off the bridge. How far are you above the water when the cord reaches its maximum elongation?
The figure above shows a hollow disc of inner radius R and outer radius R'=3.0R. Point P lies on the central z-axis,at distance D=2.0R from the center of the disc. The disc has a charge a +Q uniform;y distributed on its surface. Find the magnitude..
A weight is suspended from two ropes, one of which makes an angle #1 = 35 degrees and angle 2 = 155 degrees measured form the horizontal, Find the tension in each of the two ropes
A 1,576-kg car is moving down a road with a slope (grade) of 11% while speeding up at a rate of 3.6 m/s^2. What is the direction and magnitude of the frictional force
On a spacecraft two engines fire for a time of 578 s. One gives the craft an acceleration in the x direction of ax = 5.33 m/s2, Calculate the magnitude of the initial velocity
The maximum Doppler shift occurs if the Earth's orbital motion takes it directly toward or directly away from the alien planet. How large is that maximum wavelength shift? Express your answer both in meters and as a percentage of the unshifted wav..
The components of the electric field in an electromagnetic wave traveling in vacuum are described by Ex = 0, Ey = 0, and Ez = 7.41 sin(4.61x - wt) V/m, Calculate the frequency of the wave
A 41.4-cm diameter disk rotates with a constant angular acceleration of 2.30 rad/s2. Find the angular speed of the wheel
When the space between two parallel plates is devoid of matter, the capacitance is .47 micro farrads. The dielectric constant is
Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 42° to the horizontal, What is the coefficient of kinetic friction between the child and the slope
Illustrate a basketball momentum vectors
question a wheel starts from rest and rotates about its axis with constant angular acceleration. after 7.4 seconds have
q1. a ball on a porch rolls 60 cm to the porchs edge drops 40 cm continues rolling on the grass and ultimately stops 80
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