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A block with mass m1 = 9.4 kg is on an incline with an angle ? = 24.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: ?k = 0.23 and ?s = 0.253. * When there is no friction, what is the magnitude of the acceleration of the block? m/s2 * Now with friction, what is the magnitude of the acceleration of the block after it begins to slide down the plane
An electron ( mass = 9.11×10?31kg ) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, If the accelerating force is constant, compute the acceleration of the electron
Determine an angle (in radians) through which the drill rotates during this period.
A draw bridge of length L is being held up by an axel at its pivot and by a chail that is also of length L. The drawbridge has uniform mass. What is the minimum angle to shoot an arrow
A cylinder of mass 8.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 11.0 m/s. Determine the translational kinetic energy of its center of mass
What is the coefficient of kinetic friction
A person has a near point of NP = 85 cm and a far point of FP = 210 cm. Write a formula for the power, P1, of the upper portion of the bifocals, in terms of the given quantities, that will enable the person to see distant objects clearly
Use Pascal's principle. Given that Fout is 87 lb., the areas of the output and input cylinders are Aout 29 in2 and Ain 6 in2, what is the input force
q1. a metal sphere has a charge of 8.9x10-6c. what is the net charge after 8.8 x 1013 electrons have been located on
Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. What is the length of an edge of each small cube if adjacent cubes touch but don't overlap
Consider a dielectric material with dielectric constant (e) and with a given free charge distribution per unit volume ?f. Show that the dielectric constant is > 1 and show that the bound charge per unit volume ?b and the total charge per unit volume ..
A spherical virus has a diameter of 50 nm. It is contained in a long, narrow cell of length 1 x 10-4 m. What uncertainty does this imply for the velocity of the virus along the length of the cell? Assume that the virus has a density equal to that of ..
question 1part 1a knight of round table fires off a vat of burning pitch from his catapult at 15.2 ms at 34 above
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