Which two processes can generate energy to help a star maintain its internal thermal pressure?
A) nuclear fission and supernova B) nuclear fusion and gravitational contraction
C) nuclear fusion and supernova D) nuclear fusion and nuclear fission
B
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What is the energy density in the magnetic field 25 cm from a long straight wire carrying a current of 12 A?
A) 7.3 × 10-5 J/ m3 B) 3.7 × 10-5 J/ m3 C) 3.6 × 10-4 J/ m3 D) 1.2 × 10-4 J/ m3 E) cannot be determined with the information given
Although water and ammonia can produce Jupiter's white clouds, the complex coloration we observe in Jupiter's atmosphere requires more complex chemistry
Indicate whether the statement is true or false
Why is the ozone layer in Earth's atmosphere important to life on its surface?
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