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Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50 .
a) If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch?
b) What is the maximum weight that a single thread of this silk could support?
A firefighter with a weight of 702 N slides down a vertical pole with an acceleration of 2.90 m/s2, directed downward. What are the magnitudes and directions (choose the positive direction up) of the vertical forces
An ideal gas has a temperature of 850 K. calculate the total kinetic energy of 1 mol of this gas
The pulley in the illustration is a uniform disk of mass 2.8 kg and radius 0.24 m, which is free to rotate without friction. What is the acceleration of the falling block
A 2 kg block is connected into a spring attached to a wall with spring constant of 12 N/m. How far does the block travel before coming to rest
Imagine that in the distant future NASA lands a manned mission on one of many Jupiter's moons, Calculate the diameter of the moon
How many times more light is gathered by a single Keck telescope, whose mirror is equivalent in area to that of a circle 10 m in diameter, than by the Palomar Hale telescope, whose mirror is 5 m in diameter, in any given interval of time?
A loop of wire in the shape of a rectangle of width 8 cm and length 90 cm and a long, straight wire carrying acurrent I= 5t^1.4-3t^1.8 downward lie on a tabletop; What is the direction of the induced current
water flowing through a hose at 4.0m/s fills a 600l child's wading pool in 8.0min. What is the diameter in cm of the hose
Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 29.0 degrees. what is his speed as he leaves the roof
A rock of mass 34 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 248 N. Elucidate what is the magnitude of the acceleration of the rock?
A block of mass m1 = 4.00 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, What is the magnitude of the tension in the cord
In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m
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