The primary bonding between different H2O molecules in water is a ______________electric dipole bond.
Fill in the blank(s) with the appropriate word(s).
permanent
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A bird flies 3.0 km due west and then 2.0 due north. Another bird flies 2.0 km due west and 3.0 KM due north. What is the angle between the net displacement vectors for the two birds?
A. 23 Degrees B. 34 Degrees C. 56 degrees D. 90 degrees
Identify a true statement about main-sequence stars
A) They balance their gravity by fusing hydrogen. B) They generate energy by breaking uranium isotopes. C) They do not increase in size as they consume their fuel. D) They do not undergo any molecular change during their life spans.
Approximately what core temperature is required before hydrogen fusion can begin in a star?
A) 10 million K B) 10,000 K C) 10 trillion K D) 10 billion K E) 1 billion K
A +2.0-nC point charge is placed at one corner of a square (1.5 m on a side), and a ?3.0-nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric field at either of the two unoccupied corners?
a. 20 N/C b. 14 N/C c. 4.0 N/C d. 12 N/C e. 8.0 N/C