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A boxcar of mass 3.21 x 104 kg is rolling south at 5.08 m/s when it collides and couples with another boxcar of mass 5.18 x 104 kg that is rolling north at 2.38 m/s. What is the velocity of the coupled boxcars after collision? Take north as positive and express your result to three significant digits.
an airplane travels 85 km,62degrees north of east. Its displacement is represented by the vector A in the drawing
Calculate the electric field from four point-charge: +q at -d and -q at -d/2; 2q at d and -2q at d/2 on the z-axis, First calculate the electric potential, and then calculate its radient.
A 58-g handball moving with a speed of 5.3 m/s strikes the wall at an angle of 35° with the normal, and then bounces off with the same speed at the same angle with the normal. It is in contact with the wall for 2.0 ms. What is the average force exert..
LC circuit consists of a 20.0 mH inductor and a 0.750 µF capacitor. find the greatest potential difference across the capacitor
Suppose that a disk rotates through five revolutions in 4 seconds. What is the angular rotational velocity
a metal sphere of radius 80. mm is charged to a potential of -0.50 kv. with what velocity must an electron be fired
After crossing the finish line, the marathon runner stops, and then performs a celebratory vertical jump. what was the avg. force of the vertical ground reaction force
What is the probability density equation as a function of angle for a simple pendulum using the small angle approximation
What is the angular speed of the bar at the moment the bug jumps?
A capillary tube with a closed end is place into water.
Find the smallest particle size (density 2.65 grams per cubic cm) that will be removed in a horizontal grit chamber 10 meters long and 1.0 meter deep if the flow rate is 1000 cubic meters per hour. Suppose temperature is 25 ºC.
Transverse waves with a speed of 46 meter per second are to be produced on a stretched string. Find the required tension in the string
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