Apail of water is rotated in a vertical circle of radius r = 1.6 m . the acceleration of gravity is 9.8 m/s 2 . r v what is the minimum speed of the pail at the top of the circle if no water is to spill out? answer in units of m/s.

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.

What does si stand for, when referring to a system of measurement

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class