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A ball is dropped freely from a height of 10m.Another ball is thrown up simultaneously with a velocity of 10 m/s.Find the distance of separation between the balls after 1 sec.
During a rainstorm, 0.1 m of rain falls. If your roof has an area of 100 m2, What is the volume of water that fell on your roof
If the radius of curvature of the flight path is R=900m, and the airplane has a vertical acceleration Ay=11m/s2, determine its tangential and horizontal accelerations at this instant.
An old-style TV set places 25 kV across two plates of a parallel plate capacitor. An electron is released very close to one plate, compute the speed of the electron when it exits the hole
Water has a mass per mole of 18 g/mol,, and each water molecule has 10 electrons. what is the net charge of all these electrons
An airplane has a mass of 3 * 104 kg and takes off under theinfluence of a constant net force of 35 000 N. What is the netforce that acts on the plane’s 80 kg pilot, assuming that hehas the same acceleration as the plane?
A ray of light in air is incident on a planar surface of silica. The refracted ray makes an angle of 27.2? with the normal. Refraction index for silica is 1.41. Calculate the angle of incidence. Answer in units of ?.
which the tortoise wins in a photo finish? suppose that, when moving, both animals move steadily at their respective maximum speeds.
A reflecting telescope has a main mirror with fM = 680 mm. If an eyepiece with a magnification of 40 is used, what is the total magnification of the telescope
A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. How much of the rope unwinds in this time interval
Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 12.3 m/s toward the east, find the initial speed of the northward-moving vehicle
An astronaut is taking a trip to a planet 20 c · years away from Earth. For the astronaut to age only 16 years through the journey how fast must she travel?
Two identical boxcars (m = 15730 kg) are traveling along the same track but in opposite directions. what will be the final speed of the pair
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