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1. The slender uniform bar ABC has a mass of 12kg and is anchored to the support ceiling by two cables T1 and T2. Given that T2 breaks find the tension in T1 after the break.
2. End A of a 5kg. uniform bar has an acceleration of 4 m/s^2 along the fixed horizontal axis in the X direction. If the bar has a CCW angular velocity, of 2 radians/s as it swings thru the vertical find the forces acting at A (Fx and Fy) at that instant
A) Find v so that the rod swings up and is horizontal at the max height of the bob. B) Find the minimum v so that the rod will make a complete circle C) Find v so that the tension in the rod is zero at the top of its swing.
X - rays with an energy of 100 KeV Compton scattering from a target. If the scattered rays are detected at 40° relative to the incident rays, find a) The compton wavelength shift ?λ at this angle. b) The energy of the scattered x- ray.
q1. a 80 kg person sits on a 4 kg chair. each leg of the chair makes contact with the floor in a circle that is 1.3 cm
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
At t = 0, a particle leaves the origin with a velocity of 12 m/s in the positive x direction and moves in the xy plane with a constant acceleration of (-2.0i+4j) . At the instant the y coordinate of the particle is 18 m, illustrate what is the x ..
A typical cell has a membrane potential of -70 mV, meaning that the potential inside the cell is 70 mV less than the potential outside due to a layer of negative charge on the inner surface of the cell wall and a layer of positive charge on the outer..
Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.40 , slowing your 950- car from 16.0 to 9.50 . What was the magnitude of the average force exerted on your car during braking?
Two 10-cm-diameter charged rings face each other, What is the electric field at the center of the left ring
1. briefly and clearly explain the concept of inertia held by galilio kepler and descartes. make sure that your
A ruby laser emits an intense pulse of light that lasts a mere 10 ns. The light has a wavelength of 690 nm, and each pulse has an energy of 400 mJ. How many photons are emitted in each pulse
suppose that the engineer is at x = 0 when, at t = 0, he first spots the locomotive. Sketch x(t) curves for the locomotive and high-speed train for the cases in which a collision is just avoided and is not quite avoided.
questiona cockroach of mass m lies on the rim of a uniform disk of mass 5 m that can rotate freely about its center
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