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A sprinter running a 100 m dash leaves the starting block and accelerates to a maximum velocity of 11m/s at 6s into the race. The sprinter maintains this velocity for 2s, and then slows down until crossing the finish line 11s after beginning the race.
a) What was the sprinter's average acceleration during the first 6s of the race?
b) What was the sprinter's average acceleration form 6-8s into the race?
The coefficient of kinetic friction is 0.350. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
An object 3.25 cm high is placed 18.0 cm in front of a convex mirror with radius of curvature of 8.30 cm. Where is the image formed
How much of the rope must be pulled. Find the magnitude of the magnetic field at the point x = 0, y = 0.7 m, z = 0.
Light inside an optical fiber tube hits the wall between the tube and air. What is the index of refraction of the tube
A 80 kg woman fell from an open window 0.5m above above a fairly soft shrub. Estimate the average stopping force of the shrub on the woman
Released from rest at the same height, a can of frozen juice rolls to the bottom of the same hill. What is the translational speed of the frozen juice can while it reaches bottom.
A rotten pumpkin of mass 2.44 kg is dropped from a height of 2-m above the ground. Ignore air friction. Let the positive y-axis point down. How much momentum will the pumpkin have
Two sinusoidal waves of the same period, with amplitudes of 7.0 and 9.0 mm, What is the phase constant of the other wave
A force vector has a magnitude of 577 newtons and points at an angle 43o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
Let us model the electric behavior of such a molecule by a pair of ±1.60 × 10-19-C charges connected by a spring with force constant 8.29 × 10-4 N/m, Find the charge separation distance in an electric field of 6.41 × 105 N/C
A 0.300-kg mass, attached to the end of a 0.750-m string, is whirled around in a smooth level table. If the highest tension that the string can withstand is 250 N, after that what highest linear speed can the mass have if the string is not to brea..
A 1200-turn coil of wire that is 2.0cm in diameter is in a magnetic field that drops from 0.14T to 0 T in 11ms. What is the emf of the coil
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