The indianapolis speedway consists of a 2.5 mile track having four turns, each 0.25 mile long and banked at 9.2 degrees. What is the speed needed for these turns assuming no friction?​

Energy flows from the producer level to the level. is called

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.

Which if the following types of research is conducted on multiple occasions over time