Appendix i lists some of the nearest stars. are most of these stars hotter or cooler than the sun? do any of them emit more energy than the sun? if so, which ones?

Natural forces that can alter ecosystems include seasons and climate changes. t or f

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.