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There are two identical, positively charged conducting spheres fixed in space. The spheres are 42.6 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0645 N. Then, a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N. Using this information, find the initial charge on each sphere, q1 and q2 if initially q1< q2. The coulomb Force constant is: k = 8.99 x 10^9 N*m^2/C^2
A diverging lens (f = -12 cm) is located 20 cm to the left of a converging lens (f = 35.0 cm). A 3.00 cm tall object stands to the left of the diverging lens, exactly at its focal point.
A uniform .20-kN board of length L has two objects hanging from it : 300N at exactly L/3 from one end, What torques are being exerted on the board
Suppose an electron starting from rest is accelerated in a uniform electric field directed horizontally and having a magnitude of 3000N/C . The electric field covers a region of space 12.5cm wide.
A 43 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 17 m apart but connected by a rope of negligible mass. What is the acceleration of the girl
A block with mass m = 0.80 kg is forced against a horizontal spring of negligible mass, compressing the spring a distance of 0.20 m. When released, the block moves on a horizontal table top for 1.00 m before coming to rest. The spring constant k is 1..
a river 8 km wide has a current with a speed of 3 kmhr. how much longer will it take a boat with a speed of 5 kmhr to
What is the acceleration at the top of a jump?
Unpolarized light with an average intensity of 750.0W/m2 enters a polarizer with a vertical transmissionaxis. What is the orientation angle of the second polarizer relative to the first one
a spring oscillator is designed with a mass of 0.232kg. it operates while immersed in a damping fluid selected so
A round flywheel is going 35 rad/s and the moment of inertia is25 kg-m2. It merges with an oval flywheel with inertiaof 15 kg-m2 and velocity of 12 rad/s in the opposite direction. What is the final angular velocity?
Bailey is trying to save a young girl under a 15 m long wooden beam. She lifts the beam up from one side with a force of 25 N using her nose. find the magnitude of the torque that Bailey puts on the beam
pivot without friction about the point O. This pendulum is released from rest in a horizontal position, How far does the block move before coming to rest
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