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One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 2.12 km. They start at the west side of the lake and head due south to begin with.
(a) What is the distance they travel?
b) What is the magnitude of the couple's displacement?
(c) What is the direction (relative to due east) of the couple's displacement?
A diffraction grating is 25.0 mm wide and has 8,000 rulings (lines). Light of wavelength 656 nm is incident on the grating, and a diffraction pattern is seen on a screen a short distance away. a) What is the distance between adjacent rulings of the g..
A lantern with a 6v, 0.5W bulb uses a battery with emf 6v and internal resistance 3 ohms. How much Power is actually delivered to the bulb
Some object moves 220.0 m at an angle of 42° north of west. During this motion, a 68.0 N force acts on the same object, doing +5460.0 J of work on the object. what is this force's orientation
A 250g steel ball and a 500g steel ball each hang from 3.0-m-long strings. At rest, the balls hang side by side, barely touching. To What angle does each ball rebound
a plane is flying in the horizontal plane. at time t1 0 s with the components of its velocity are vx 100 ms and vy
Find the magnitude of the net force on arigid square loop of wire of side length l =6.36 cm. The center of the loop is 10.10 cm from the wire and theloop carries a current of 10.0 A.
Water flows through a 2.7cm -diameter pipe at 2.1m/s. If the pipe narrows to 1.7cm diameter, what is the flow speed in the constriction
You keep your coffee in a sealable thermal mug which has thermal conductivity k-0.036 W/m k. how long (in minutes) will it take the coffee to cool down
How much work did the movers do (horizontally) pushing a 190-{rm kg} crate 11.2 m across a rough floor without acceleration, if effective coefficient of friction was 0.60.
A concave-convex lens with index of refraction n = 3/2, radii of curvature R1 = 3cm and R2 = 1cm is 4cm to the left of a diverging lens having focal length 2cm. Where is the final image formed by this combination of lenses
A roller coaster cart with a mass of 116 kg is originally moving at 22 m/s at a height of 24 meters above the ground on a frictionless hill , What is the length of the horizontal surface
An object is placed 7.00 cm in front of a concave mirror. The radius of curvature of the mirror is 20.00 cm. Where is the image located? What is the magnification? Is this image real or virtual? Upright or inverted?
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