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.
How much does the iPad Pro weigh? The iPad Pro is Apple's largest iOS devices. It sports a 12.9-inch display and it is 8.68 inches (220.6 mm) thick. The WiFi-only model weighs 1.57 pounds (713 grams) and the cellular version weighs 1.59 pounds (723 grams). The iPad Air 2 WiFi-only model weighs 0.96 pounds (437 grams), as a comparison.