Here is a model of the Earth-Sun system at a certain point in Earth's orbit around the Sun. Axis Rotation aris Arctic de Tropic of Cancer C Sunlight Equator Tropic of Capricom Antarcbic Card B Perpendicular to orbit According to the model, which two points on Earth are experiencing winter? ОА. А A A В. В C. D ODC​

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?