Compare and contrast the working of electronic distance meter (EDM) and extensometer.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

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.