In a digital multimeter, what changes inside the meter when you push the button to change from 200v range to the 20v range? by what factor does it change? does it increase or decrease?

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.

Most short-period comets do not have randomly oriented orbits because

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same