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Question
1 Two wires hold up a massive beam of length L=16 m and mass 330 kg. A box of mass 220 kg hangs from a wire that hangs from the beam a distance x=12 m away from the left edge of the beam. What is the tension in RIGHT support wire?
2. The work completed in accelerating a flywheel from rest to the angular speed of 18.5 revolutions per second is 17.5 kJ. What is the moment of inertia of flywheel?
3. A large tree trunks are floating in the sea. The density of the sea water is 1025 kg/m3, density of the trunk is 650 kg/m3. What fraction of the trunk's volume is above the surface of water?
4. Through a bad weather day with an atmospheric pressure of 0.9 atm a submarine dives at a depth of 11.3 m. The inside of the submarine is held at a pressure of 1.2 atm. What is the least force needed for someone inside submarine to push open the circular escape hatch with a diameter of 0.8 m in an emergency? (The hatch is placed on the side of the submarine - suppose the hatch is at the nominal diving depth, density of water is 1000 kg/m^3)
Using the kinematic equation, prove that if two balls are released simultaneously from table, one with zero velocity and the other with a horizontal velocity, they would both reach the ground at the identical time.
Polymer diffusion and Calibration of an optical tweezer
Please address the 2-D/3-D cases for the particle in a finite box of infinite depth. What are the eigenfunctions and eigenvalues now
question1a solenoidal coil with 26 turns of wire is wound strongly around another coil with 330 turns. the inner
A nearsighted person wears glasses to correct the problem. How far in cm from the eyes is the person's far point located
a positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. what is the system's total kinetic energy
Four point charges, Q1(-15,0,15), Q2(15,0,15), Q3(15,0,-15) and Q4(-15,0,-15) in cartesian coordinates are surrounded with air. If charges Q2 = -Q3 = 2 microCoulomb, Find the forces applied to each point from other charges
A circular loop in the plane of the screen lies in a 0.60 T magnetic field pointing into the screen. The loop's diameter changes from 18.5 cm to 6.0 cm in 0.50 s.
The coefficient of friction between a certain brass block and a large revolving turntable is μ = 0.24. What is the period of rotation of the turntable
An initially uncharged 4.53x10-6 F capacitor and a 7250 ohm resistor are connected in series, Calculate the circuit's time constant
A very long solenoid of circular cross section with radius r= 5.4cm has n= 86.0 turns/cm of wire. An electron is sitting outside the solenoid, at a distance r= 5.90 cm from the solenoid axis. What is the magnitude of the force on the electron whil..
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
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