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A plane flies 450 km east from city A to city B in 45.0 min and then 900 km south from city B to city C in 1.50 h. (Assume points east and points north.)
(a) In magnitude-angle notation, what is the plane's displacement for the total trip?
( km ° )
(b) In magnitude-angle notation, what is the plane's average velocity for the total trip?
( km/h ° )
(c) What is the plane's average speed for the trip?
An enemy ship is on the east side of a mountainous island. The enemy ship can maneuver to within 2500 meters of the 1800 meter high mountain peak and can shoot projectiles with an initial speed of 250m/sec. If western shoreline is horizontally 30..
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Diffracted light from a circular aperture is viewed on a distant viewing screen, Find the radius of the aperture if the wavelength of light is 680 nm
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