With science! (the first are part of the same question)

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?

Which research method uses information that governments, businesses, and educational institutions have already made available for public use? survey correlational research cross-cultural research secondary analysis

Which of the following is not used to measure wind? oa. psychrometero b. wind socko c. weather vaneo d. anemometer