4. A body in motion is said to be in equilibrium when it is A moving with uniform velocity.
B at rest.
C accelerated by a force.
D moving in an indefinite path.​

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical