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Four ropes are tied to a stake, and each is pulled toward a compass direction, N, S, E, or W. A force of 6 N is applied to the rope pulled toward the east. Forces of 19, 35, and 39 N are applied toward the south, west, and north, respectively.
What is the magnitude of the net force exerted on the stake by the ropes?
two 2cm x 2cm plates that form a parallel capacitor are charged to 0.708 nc. what are the electric field strength
Consider a common mirage formed by super-heated air just above a roadway. A truck driver whose eyes are 2.00 m above the road, Find the index of refraction of the air just above the road surface
The moon's diameter is 3.48x106 m, and its mean distance from the earth is 3.85 x 108 m. The moon is being photographed with a camera whose lens has a focal length of300 mm. (a) Discover the diameter of the moon's image on the slide film.
A parallel-plate capacitor has circular plates and no dielectric between the plates. Each plate has a radius equal to 2.3 cm and the plates are separated by 1.1 mm. Charge is flowing onto the upper plate (and off of the lower plate) at a rate of 5..
The electric field strength 2.0 cm from a 15-cm-diameter metal ball is 67,000 N/C. What is the charge (in nC) on the ball
A laser emits a cylindrical beam of light 2.6 mm in diameter. what is the rms value of the electric field in the laser beam
A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm. A very wide viewing screen is 2.1 m behind the grating. What is the distance between the two m= 1 fringes? Use two significant figures
In order to overcome a surface tension of a liquid, a force of1.32x10-2N is required to lift a wire ring ofcircumference 12.0cm. What is the surface tension of the liquid?
An interferometer is set up to carefully measure changes in length. The laser source has a wavelenth of 632nm and the arms of the device are 11 m long
The Mars rover was deployed on the surface of Mars in July 1997. At one point during its subsequent mission, How far was Mars from the from Earth at that time
A loaded ore car has a mass of 935 kg and rolls on rails with negligible friction. What maximum power must the winch motor provide
A large merry-go-round completes one revolution every 32.5 s. Calculate the acceleration of a child seated on it, a distance of 5.10 m from its center. What is the magnitude?
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