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2. what is the difference between an experimental variable and a control variavier give an example to
explain your answer.
3. suppose you have three identical drinking cups: one made of plastic, one foam, and one paper. you
want to find out which cup will keep your hot cocoa hot for the longest time.

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl, max are applied?

You can decrease the resistance of a length of wire by

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!