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Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.7 kg and m2 is 9.0 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor.
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
For the circuit shown below, C = 0.113 µF and = 103 V. The switch throw is rotated to contact b after having been at contact for the long time, and 3.47s later the potential difference across the capacitor is equal to 1/2. What is the value of R.
A box slides down a 25° ramp with an acceleration of 1.070m/s2. Resolve the coefficient of kinetic friction between box and ramp.
An electron with the initial speed of 4.00×10^5 is brought to rest by an electric field. What was the initial kinetic energy of electron, in electron volts.
Levy flights- consider a random walk of N steps in one-dimension. suppose that the steps are completely uncorrelated, and that the distribution of step size a is given by phi(a)= k*1/(1+abs(a)^alpha).
What is the maximum rate of rotation. A moving electron passes near the nucleus of a gold atom, which contains 79 protons and 118 neutrons. At a particular moment electron is a distance of 7.5 x10 ^9 m from the gold nucleus.
A neutron star has a mass of 2.0*10^30 kg (about the mass of our sun) and a radius of 5.2*10^3 m (about the height of a good-sized mountain). assume an object falls from rest near the surface of such a sta
A 10-kg bullet is fired horizontally into a 300-g wooden block initially at res on a horizontal surface and become embedded in it. The coefficient of friction between block and surface is (0.50).
suppose that the gold ions carry one elementary unit of positive charge.
Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.
Physics - Classical Mechanics - Inclined Plane, A packing crate is placed on a plane inclined at an angle of 350 from horizontal. If the coefficient of static friction
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