Which of the following statements is true? Large wheels need less effort than small wheels to move an object.
A block-and-tackle pulley uses only one pulley.
A screw is made of two wedges joined at the back.
All of the above.

The internet is controlled by: (select one): a. statutes and court cases in federal and state courts in the united states. b. the advanced research projects agency (arpa) and the u.s. department of defense. c. no single government or organization. d. google, yahoo, and the other search engines which have proprietary interest in the content thereon.

People of french origin make up about of the canadian population. 23 percent 50 percent 1 percent 76 percent

Which of the following is an example of how the principle of beneficence can be applied to a study employing human subjects? providing detailed information about the study and obtaining the subject's consent to participate. ensuring that the selection of subjects includes people from all segments of the population. ensuring that persons with diminished autonomy are protected. determining that the study has a maximization of benefits and a minimization of risks.