HELP ME THIS IS 1 MONTH OVER DUE PLS HURRY Choose all the statements below that are true.

1) Temperature has no effect on whether water can be found in solid or liquid form.

2) Water does not exist in solid and liquid forms.

3) Water can be solid when it is very cold (below 32 degrees Fahrenheit/0 degrees Celsius).

4) Water can be liquid when it is warm (above 32 degrees Fahrenheit/0 degrees Celsius and below 212 degrees Fahrenheit/100 degrees Celsius).

Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is ďc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.

The pressure in a fluid is affected by which characteristics of that fluid

Which method would be best to separate a mixture of sand and gravel