Type I supernovae result from ________ stars which have accreted sufficient additional mass via mass transfer from a close binary companion
Fill in the blank(s) with correct word
white dwarf
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Which of the following is true of the origin of life on Earth?
A) Evidence suggests that the earliest living things contained hard bones and shells. B) The oldest living fossils indicate that life began on land. C) Evidence suggests that the earliest living things were multicellular and gigantic. D) The oldest fossils indicate that life began in the sea.
Car A travels with speed v around curve number one, which has a radius r. Car B travels with speed 2v around curve number two, which has a radius 2r. The acceleration will be
A. zero for both cars. B. greater for car B. C. greater for car A. D. the same for both cars.
Contrast space flight and radio communication as possible means of SETI
What will be an ideal response?
A long straight wire (diameter = 2.0 mm) carries a current of 25 A. What is the magnitude of the magnetic field 0.50 mm from the axis of the wire?
a. 5.0 mT b. 10 mT c. 0.63 mT d. 2.5 mT e. 0.01 mT