Express the two forces in cartesian vector form when f1 = 250 n and f2 = 525 n. express the resultant vector as a cartesian vector. determine the magnitude and coordinate direction angles of the resultant. force f1 is rotated 45 degrees from the y axis in the x-y plane and 60 degrees up in the z direction. also, determine the coordinate direction angles of f1.

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? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.