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It's your birthday, and to celebrate you are going to make your first bungee jump. You stand on a bridge 120 meter above a raging river and attach a 33 meter 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 44 N/m. Suppose that your mass is 70 kilogram. After a long hesitation, you dive off the bridge.
Determine how far are you above the water when the cord reaches its maximum elongation?
a bullet with a mass of 7.00 g traveling horizontally with a speed of 400 ms is fired into a wooden block with mass of
a ball is rolled off a table with an initial horizontalbelocity of 1.8 m/s. how long does it take for the ball to land in the box
1. an air puck bounces back and forth between two parallel walls always traveling perpendicular to the walls. each time
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
A circular coil (980 turns, radius = 0.043 m) is rotating in auniform magnetic field. At t = 0 s, the normal to the coilis perpendicular to the magnetic field. At t = 0.013 s,the normal makes an angle of 45o with the field becausethe coil has made ..
Two resistors A and B are connected in series to a 9.0 V battery; the voltage across resistor A is 6.0 V. What are the resistances of A and B
The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. Illustrate what is the work done on the disk by the spring during one full circle?
An archeologist on a dig finds a fragment of anancient basket woven from grass. What is the age of the basket
Calculate the expression for electric field around and infinite line of charge, which has a line charge density lambda (using Gauss?s Law, cylindrical Gaussian surface). Calculate the magnitude of electric field at a distance of 10 cm from line if th..
a storm generates large waves in the pacific ocean. on november 25 208 6pm swell with a wave height of 5m reaches an
Two radio-frequency point sources separated by 1.5 m are radiating in phase with ? = 0.30 m. How many maxima does it detect
A 13g rifle bullet traveling 150m/s buries itself in a 3.7 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Resolve the horizontal component of the pendulum's maximum displacement.
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