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Three identical blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F_vec The magnitude of the tension in the string between blocks B and C is T = 3.00{\rm N} . Assume that each block has mass m = 0.400{\rm kg} .What is the magnitude F of the force?What is the tension T_AB in the string between block A and block B?
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire) and of length 2.7 m (9 ft) is connected to an electric heater which draws 11.5 A on a 120-V line
A simple pendulum consists of a bob of mass 1.8kg attached to a string of length of 2.5m. The pendulum is held at an angle of 30 degrees from the vertical by the light horizontal string attached to a wall.
Two 1.5cm -diameter disks face each other, 2.0mm apar, What launch speed must the proton have to just barely reach the positive disk
An astronaut leaves Earth in a spaceship at a speed of 0.280C relative to Earth. If the destination is a star system 12.5 light-years away as measured by an observer on Earth, what is the distance to the star system as measured by the astronaut..
at what height above the earth is the acceleration due to gravity 10% of its value at the surface, find the speed of a satellite orbiting at that height?
Two lenses, separated by a distance of 22.1 cm, are used in combination. The first lens has a focal length of +26.0 cm; the second has a focal length of -15.0 cm. What is the final image distances relative to the second lens
A performer, seated on a trapeze, is swinging back and forth with a period of 9.95 s. what will be the new period of the system
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. A ray of white light enters the water at an angle of incidence of 80.4°. What is the underwater angle of refraction for the red component of the light?
Consider the particle that is constrained to move along a curve described by y = x4. Find the equation of motion for small displacement about equilibrium
Suppose you cycle 10.0 km to the east and 15.0 km north to get to a shopping mall from home. what is the direction the the pigeon should fly and how far must it travel to get home in the shortest time
An electron of ? = 0.999 993 moves along the axis of an evacuated tube that has a length of 2.69 m as measured by a laboratory observer S at rest relative to the tube
A pendulum bob of length L has its motion interrupted by the peg perpendicularly beneath the support. The bob is released when the string is horizontal. Find out the minimum value for y in order for the bob to swing in a complete circle. State thi..
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