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Two people running a 5000 meter race. Cindy is running at 2.8meters/second. Jim starts 3000s late but is running at 4.2 meters/second. Both speeds are constant. How long does it take for Jim to catch up to Cindy? How far have they run when this happens? Solve for Jim's time and calculate the displacement. Graph on a position vs time graph for each runner.
When connected in series to a 110-V line, two resistors use one-fourth the power that is used when they are connected in parallel. what is the resistance of the other
A sample 114 nd has a mass of 0.055395 kg and emits an average of 2.36 alpha particles per second. Determine the decay constant and the half-life
A 50 kg box is being pushed a distance of 7.0 m across the floor by a force whose magnitude is 164 N. The force is parallel to the displacement of the box.
A mass moves from rest down an inclined plane with an angle of 60 degrees at the top. find the acceleration of the mass down the ramp
A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop with a radius of 25 cm. Find the average electrical power dissipated in the process
A potter's wheel having a radius 0.49 m and a moment of inertia 10.9 kg·m2 is rotating freely at 52 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
A particle of mass m is constrained to move in a vertical plane that is rotating with constant angular velocity, , around a vertical axis. Gravity is acting downward on the particle.
A certain atom of has 81 protons. Assume that the nucleus is a sphere with radius 6.99 fm, compute the magnitude of the electric field produced by the protons
A satellite moves in a circular orbit around the Earth at a speed of 4420 m/s. Determine the period of the satellite's orbit
Draw a picture of a polarized and unpolarized E-field (go ahead and just do it at one point in space using an arrow(s)). Polarized means that the E-field oscillates perpendicularly at a fixed orientation relative to the direction of propagation.
An object has a kinetic energy of 317 J and the momentum of magnitude 24.0 kg · m/s.
A tuning fork is sounded above a resonating tube (one end closed) which resonates at a length of 0.32 m, What is the frequency of the fork
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