You watch a distant lady driving nails into her front porch at a regular rate of 1 stroke per second. you hear the sound of the blows exactly synchronized with the blows you see. and then you hear one more blow after you see her stop hammering. how far away is she? the speed of sound is 340 m/s.

Positrons are spontaneously emitted from the nuclei of

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 equation 2: 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!

Steel water aluminum think about the three words listed here. which word could be added as the title of this list of words to tell how these words are related? a) conductors b) heat c) insulators d) metals