One uranium atom has a mass of 3.95 x 10^-22 grams.
a) work out an estimate for the number of uranium atoms in 1kg
b) is your answer to (a) an underestimate or an overestimate?
give reason for your answer.

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Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o