At a school dance on Mars, aliens Jack and Jill are at the opposite sides of the gym which is 50m long. Jack has a mass of 70kg and Jill has a mass of 60kg. What is the magnitude of force between Jack and Jill?

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

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!