On the surface of the earth, a kilogram weighs approximately: -A. 10 pounds
-B. 2 pounds
-C. 1 pounds
-D. 5 pounds

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Asample of a gaseous substance changes into liquid. this process is called (blank) and it takes place when heat is (blank) a gaseous system

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