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A 68.0-kg daredevil exhibitionist hangs on to the end of a long bungee cord attached to the railing of the Brooklyn Bridge and oscillates vertically. The spring constant of the bungee cord is 1.40 x 102 N/m, and the system's damping constant is 0.138 kg/s. How long does it take for the oscillation amplitude to decrease to 90.5% of its initial value? What is the frequency of oscillation?
A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his heartbeat as 70 beats per minute. Determine what is his heartbeat rate
A jet plane lands with a speed of 114 m/s and can accelerate at a maximum rate of ?4.20 m/s2 as it comes to rest. what is the minimum time needed before it can come to rest
What is the speed of the second asteroid? Now suppose that the first and second asteroids carry charges of 3.68 C and -3.68 C, respectively. How fast would the second asteroid have to be moving in order to occupy the same circular orbit as before?
after flying for 15 min in a wind blowing 42 kmh at an angle of 34deg south of east an airplane pilot is over a town
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 292 K, What is the coefficient of performance of this heat pump
A lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm. (a) How tall is the lamp's image if the lamp is a distance of 26.5 cm from the mirror (include sign if negative)
You have a solid conducting sphere (radius A, net charge -2Q) surrounded by a conducting spherical shell (inner radius B, outer radius C, net charge +3Q). What is the electric field everywhere
Rank the vector combinations on the basis of their angle, measured counterclockwise from the positive x axis. Vectors parallel to the positive x axis have an angle of 0 . All angle measures fall between 0 and 360. Rank from largest to smallest. To..
An electron is confined to a one-dimensional region in which its zero-point (n = 1) energy is 2.90 eV. What is the length of the region
A small sphere that carries a charge of 6.45 ?C is whirled in a circle at the end of an insulating string. What average current does this rotating charge represent
a loudspeaker at the origin emits sound waves on a day when the speed of sound is 340 ms. a crest of the wave
The lows note emitted by stretched string has a frequency of 50Hz.how many outcome are possible between 40Hz and 170Hz.
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