Aballoon has a maximum capacity of 1700 m3. on a cool morning (temperature = 10°c, some hot-air balloonists start filling their balloon with air until it occupies three-fourths of the maximum possible volume. then, they turn on the propane burner to fill the balloon to its complete volume of 1700 m3. the temperature at which the air fills the balloon to its maximum capacity is:

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods

Which characteristics can be used to differentiate star systems? check all that apply.