Ques:Q: The force on a charged particle in a magnetic field is always perpendicular to both its velocity vector and the? Choices: - position vector - track vector - gravity vector - field vector A:

Ans:field vector
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Ques:Q: For a star to form, what force pulls gas and dust into the center of the nebula? Choices: - weight - centrifugal force - motion - gravity A:

Ans:gravity
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Ques:Q: Where do the majority of species live? Choices: - air - trees - land - ocean A:

Ans:ocean
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Ques:Q: Which therapy uses viruses to genetically modify diseased cells and tissues? Choices: - chemotherapy - digestive therapy - oxygen therapy - viral therapy A:

Ans:
viral therapy
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