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Two point charges are located on the x axis: one charge, q1 = -17.5nC , is located at x= -1.740m ; the second charge, q2 = 40.0nC , is at the origin. What is the net force exerted by these two charges on a third charge q3 = 46.5nC placed between q1 and q2 at x= -1.095m ?
a horizontal vinyl record of radius 0.0862 m rotates freely about a vertical axis through its center with an angular
the focal point of a convex mirror is 4.0 m behind the mirror. a woman stands 2.0m in front of the mirror. what is the distance between the woman and her image
A uniform rope of mass m and length L hangs from a ceiling. (a) Show that the speed of a transverse wave on the rope is a function of y, the distance from the lower end, and is given by v = √(gy). (b) Show that the time a transverse wave takes to tr..
Astronauts discover a planet orbiting another star. The mass of the star is 8.10 x 10^30 kg, what is the force exerted by the star on the planet
a battery-powered global positioning system gps receiver operating on 9.0 v draws a current of 0.13 a. how much
A coil of 160 turns and area 0.20 m2 is placed with its axisparallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 Tin the negative x-direction in 2.0 s. If the resistance of the coil is 16 Ω, at ..
an electron in the hydrogen atom is in an excited state given by n4 l3 ml2 ms12. list the possible final states the
A 20 kg sled is being pulled along a horizontal stretch of snow covered ground by a horizontal force of 30 N. find the coefficient of kinetic friction between the sled and the snow
A ski starts from rest and slides down a 29° incline 100 mlong. Use energy methods. how far will the ski travel along the level
stronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.13 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
A capacitor with its plates separated by paper stores 4.6 nc of charge when it is connected to a particular battery. How much charge does the capacitor store
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?
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