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The amount of force needed to keep a 0.3 kg box moving at a constant speed of r m/s of frictionless ice is?

A.) 0N
B.) 10N
C.) 1.2N
D.) 0.3N
E.) 2N

What controls activities within a eukaryotic cell?

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above