The diagram shows a uniform beam pivoted at its centre. The bar weighs 800N, and threeother forces act on it as shown. Distance x can be varied. What value of…

The mass of an atom of uranium is 4
10-25 kg.What is the mass, in milligrams, of 8 million atoms of uranium? Answer: 2) E Mass of 8×10⁶ uranium…

The table below shows the proportions of undigested and digested carbohydrates, fats andproteins in three regions of the digestive system. Which row of the table below correctly identifies the types…