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An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 5.4 km, but when the snow clears, he discovers that he actually traveled 8.3 km at 45o north of due east. (a) How far and (b) in what direction (south of due west) must he now travel to reach base camp?
Measurements on two stars indicate that Star X has a surface temperature of 6127°C and Star Y has a surface temperature of 12127°C. If both stars have the same radius, what is the ratio of the luminosity (total power output) of Star Y to the luminosi..
Two cars are traveling along a straight road. Car A maintains a constant velocity of 110 km/h and car B maintains a constant speed of 110 km/h. At t= 0, car B is 45 km behind car A. How far would car A travel from t = 0, before it is overtaken by c..
A 6650kg iceberg with density 931 {\rm kg/m}^3 is afloat in seawater with density 1030 {\rm kg/m}^3. Find the volume of water displaced by the iceberg
two parallel metal plates have area a 255 cm2 and are separated by l 0.50cm. they have a potential difference of 0.25
An electric clothes dry operates on a voltage of 220V and draws a current of 20A. How long does the dryer take to dry a full load of clothes that weighs 6.0 kg wet and 3.7kg dry
question a 0.6-kg ball is fastened to a spring with a spring constant of 86 nm and is oscillating horizontally with an
Two electrons in a vacuum exert force of F = 4.11E-08 N on each other. How far apart were the electrons originally in meters
the peak instantaneous current in a certain lightning stroke is 21700 a vertically upward. the current is approximately
A crate of mass 10.0 kg is pulled up a rough incline with aninitial speed of 1.50 m/s. The pulling force is 100.0 Nparallel to the incline, which makes a 20.0 degree angle with thehorizontal. The coefficient of kinetic friction is 0.400, and the c..
a flat surface having an area of 3.6 m2 is rotated in a uniform electric field of magnitude e 6.3 x 105 nc. determine
question two subway stops are separated by 1100 m. if a subway train accelerates at 1.2ms2 from rest through the first
transverse waves with a speed of 59.0 ms are to be produced on a stretched string. a 4.95-m length of string with a
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