A great example of a physical boundary is a mountain. For example, the Pyrenees Mountains, which serve to separate France and Spain, are a physical boundary. So are the Ural Mountains which separate Europe and Asia. Along with mountains, oceans, seas, even deserts are examples of physical boundaries.
An average size apple weighs 6.4 ounces, which is equal to 180  grams. One apple contains approximately 91 calories and 3 grams of  dietary fiber.
Apple's larger iPad Pro measures in at 12.9 inches diagonally, 12 inches tall, and 8.68 inches wide. It's 6.9mm thick, which is the same thickness as the iPhone 6. The Wi-Fi only model weighs 1.57 pounds, while the Wi-Fi + Cellular model weighs 1.59 pounds.