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Find out the work done by an object. Mattwe pulls his little sister sarah in a sled on the icy surface, with a force of 60 N at an angle of 37 ° upward from the horizontal. If he pulls her a distance of 12 m, what is the work completed by matthew?
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Give the effective self-exciting capacitance at 1900 rpm and 60 Hz of an induction generator having a rated self-exciting capacitance of 180 μF and a load connected across its terminals of RL = 50 Ω and L = 0.05 H. What ...
Fatty deposits in blood vessels pose a health risk. Chemical agents added to the blood can increase the solubility of the fatty deposits in blood, thereby providing a means to dissolve the fatty deposits in situ. To expl ...
A particle rotates counterclockwise in a circle of radius r0 with a constant angular speed of ω0. At time t = 0, the particle has an x coordinate of x0 and is moving to the right. (a) Determine the x coordinate as a func ...
Find the equations of the tangent lines to the graph of f(x) = sin x at x = 0 and at x = π/3. Use each tangent line to approximate sin(π/6). Would you expect these results to be equally accurate, since they are taken equ ...
An 1800 kg car stopped at a traffic light is struck from the real by a 900kg car. The two cars become entangled, moving along the same paths that of the originally moving car. If the smallest car were moving at 20m/s bef ...
The 1D2 state of atomic oxygen lies 1.968 eV above the ground state. Calculate the enthalpies of reaction for the HOx cycle reaction 1DO + H2O r 2OH and the corresponding ground state reaction 3PO + H 2 O→ 2OH.
Newton's Second Law of Motion Purpose - To determine the relationship between net force, mass, and acceleration and to use vector addition to determine the net force on an object. Discussion 1. In the situation with a co ...
The coefficient of kinetic friction between the block and the ramp is 0.20. If the distance for the to reach the top of the ramp or the bottom of the ramp are both 10 m, how long will it reach the top or bottom of the ra ...
You launch a model rocket from ground level. It moves directly upward with a constant acceleration of 77.5 m/s2 for 1.10 seconds, at which point it runs out of fuel. Assuming air resistance on the rocket is negligible, w ...
A snowboarder on a slope starts from rest and reaches a speed of 1.1 m/s after 8.2 s. (a) What is the magnitude of the snowboarder's average acceleration? m/s2 (b) How far does the snowboarder travel in this time?
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SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless
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