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two ropes support a load 312 kg. the two ropes are perpendicular to each other, and the tension in the first rope is 2.48 times that of the second rope. Find the tension in the second rope. The accelreation of gravity is 9.8 m/s^2. Answer in the units of N.
An 80 kg person climbs a set of stairs that are 5 meters high. How much gravitational potential energy does she gain
In a charming 19th-century hotel, an old-style elevator is connected to a counterweight by a cable that passes over a rotating disk 3.50 m in diameter. The elevator is raised and lowered by turning the disk, and the cable does not slip on the rim ..
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that six different wavelengths are observe, what is the shortest wavelength
What is the new acceleration of box
You do 116 J of work while pulling your sister back on a swing, whose chain is 5.0m long, until the swing makes an angle of 32.0° with the vertical
Two students are on a balcony a distance h above the street. One student throws a ball vertically downward at a speed vi; at the same time, the other student throws a ball vertically upward at the same speed. Answer the following symbolically in t..
The coil in a 60-Hz ac generator has 125 turns, each having an area of 3.0*10^-2 m^2, What is the RMS output voltage
A cardinal (Richmondena cardinalis) of mass 4.30×10-2 and a baseball of mass 0.14 have the equal kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
An asteroid, who's mass is 7.8 × 10-4 times the mass of Earth, revolves in the circular orbit around the Sun at a distance that is 2.5 times the Earth's distance from the Sun.
two extremely large nonconducting horizontal sheets each carry uniform charge density on the surfaces facing each other. find the surface charge density on the lower sheet
A microscope has an objective lens with a focal length of 2.0cm, an eyepiece with a focal length of 0.25 cm, What is the magnification of the microscope
A box with a mass of 6 kg is lifted (without acceleration) by a height of 6.0 m in order to place it upon the shelf of a closet.
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