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A sprinter explodes out of the starting block with an acceleration of +4.4 m/s2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race.
(a) What is her velocity at t = 1.2 s.
(b) What is her velocity at the end of the race?
A 0.35kg mass suspended from a spring moves with simple harmonic motion. At the instant mass is displaced from equilibrium by -0.105 m, what is its acceleration? (The spring constant is 11.8N/m)
Two point charges of magnitude 4.0 μC and -4.0 μC are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m, respectively
A VW Beetle goes from 0 to 99.0 mi/h with an acceleration of +3.90 m/s2. How much time does it take for the Beetle to reach this speed
Two converging lenses with focal lengths of 40cm and 20cm are 14cm apart. Calculate the image position and image height
The electricity received at an electric substation has a potential difference of 2.80 10^5V. If the requires output is 440V, what must be the ratio of the turns of the step-down transformation.
A 1 kg ball is attached to a 2 m long piece of very light string and suspended in such a way that it can freely swing and it passes just above the ground.
Water flows from a fire truck through a hose that is 10.7 cm in diameter and has a nozzle that is 2 cm in diameter. what is the gauge pressure in the truck
q1. what is the dissimilarity in your blood alcohol level between a full and empty stomach after you drank 3 malted
A constant horizontal force Fa pushes a 1.50kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. gives package's x and y velocity components versus time t.
A 0.38 H inductor and a 225 ohm resistor are connected in series to an AC generator with an rms voltage of 30V and a frequency of 60 Hz. Find the rms values of the current in the circuit
An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. how far away is it from the ion
A person walks 21° north of east for 3.30km. How far would another person walk due north and due east to arrive at the identical location.
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