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Find the tension in each of the two ropes supporting a hammockif the first one is at an angle of 13.5° above the horizontal and the second is at anangle of 35.4° above thehorizontal. The person sleeping in the hammock (unconcerned abouttensions and ropes) has a mass of 71 kg.T (first)= ?kNT(second)=?kN
An object of mass m is dropped at t = 0 from the roof of a building of height h. While the object is falling, a wind blowing parallel to the face of the building exerts a constant force F on the object. (a) At what time t does the object strike th..
If 42.8 cm of copper wire (diameter = 1.36 mm, resistivity = 1.69 x 10-8?·m) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at the constant rate of 11.9 mT/s
A disk-shaped merry-go-round of radius 3.02 m and mass 169 kg rotates freely with an angular speed of 0.692 rev/s. What is the final angular speed of the merry-go-round
A 2.00-g charged particle is released from rest in a region that has a uniform electric field vector E = (590 N/C) i hat. After traveling a distance of 0.470 m in this region, the particle has a kinetic energy 0.150 J.
A heat engine operates in a Carnot cycle between 76.0°C and 355°C. It absorbs 21000 J of heat per cycle from the hot reservoir. The duration of each cycle is 3.00 s
The big mall near Sally and Amy's city has extended their operating hours to accommodate the huge crowds expected for the After Thanksgiving Sale. How long were they in the mall
A five-slit system with 7.8 um slit spacing is illuminated with 615 nm light. Find the angular positions of the first two maxima
A force Farrowbold applied to an object of mass m1 produces an acceleration of 3.10 m/s2, What is the value of the ratio m1/m2
Draw the displacement for the father and son.
A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.4×1014 kg·m/s. Find the relativistic momentum of the spacecraft
73 magnetic target is suspended on a string. A .025magnetic dart, shot horizontally, stickes the target head-on. the dart and the target together, acting like apendulum, swing 12 cm above the initial level before instantaneously coming to a rest...
The refractive indices of materials A and B have a ratio of nA/nB = 1.71. The speed of light in material A is 1.36 x 108 m/s. What is the speed of light in material B?
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