Which statement is true of equinoxes? they occur in june and december. days and nights are equal in length everywhere. the length of daylight in the arctic and antarctic circles is 24 hours. the sun’s vertical rays are striking either 23.5°s or 23.5°n.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form