HELP ASAP Two objects are held close together. When they are released, they move toward one another. Which conclusion is
supported by this evidence?
O The objects are both positively charged.
O The objects are both negatively charged.
O The objects have no charge.
O The objects have opposite charges.

Which notation is used to represent an alpha particle? a. b. c. d.

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.

Which accounts for an increase in the temperature of a gas that is kept a constant volume