Which procedure could be used to demonstrate that matter is conserved during a physical change? (1 point) O Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg.

O Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid water.

O Find the mass of a cup of water. Boil the water. Find the mass of the water that remains.

O Find the mass of an apple. Cut the apple and remove the core. Find the mass of the remaining apple.

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.