What is the purpose of using the string to tie the forelegs and hind legs during dissection?

J. j. thomson’s experiment disproved the theory that an atom

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.