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Two objects (18.0 and 52.0 kilogram) are connected by a mass less string that passes over a mass less, frictionless pulley. The pulley hangs from the ceiling.
(a) Evaluate what is the acceleration of the objects?
(b) Evaluate what the tension in the string.
A 5.0 gram piece of Styrofoam carries a net charge of - 5.0 X 10-6 C and floats above the center of a large horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic sheet?
What is the tangential acceleration of a bug on the rim of a 13.0-in.-diameter disk if the disk accelerates uniformly from rest to the angular speed of 77.0 rev/min in 3.40 s.
a spacecraft engine creates 55.1 mn of thrust with a propellant velocity of 4.88 kms. a find the rate dmdt at which the
A sphere of radius a has a radial polarization given by P = \(\alpha r^{n} \) ^r (r_hat) , where \(\alpha\) and n are constants and n is greater than or equal to 0. Find the bound volume and surface charge densities. Find E inside and outside th..
A 107A A current circulates around a 2.20-mm-diameter superconducting ring. What is the ring's magnetic dipole moment
Describe an experiment to measure the molecular weight Mw and the second viral coefficient B of a macromolecules in solution using osmotic pressur. Show how you would plot the experimental data.
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. The moment of inertia of the plank about the pivot is .
Fish are hung on a spring scale to decide their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale? What is the mass of a fish that stretches the spring 5.50 cm?
A centrifuge in a medical laboratory rotates at an angular speed of 3400 rev/min. Find the constant angular acceleration of the centrifuge
A diver 60 m deep in 10 C fresh water exhales a 1.5-cm-diameter bubble. find the bubble's diameter just as it reaches the surface of the lake
A convex lens is held over a piece of paper outdoors on asunny day. When the paper is held 26 {\rm cm} below the lens, the sunlight is focused on the paper and the paperignites. What is the focal length of the lens?
A uniform 2.45- kg spinning disk with a radius of 0.323 m is brought to rest by a brake-pad pressed against the side 0.226 m from the rotation axis. What frictional force was applied by the brake pad
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