But donât take over-the-counter (OTC) cough suppressants unless coughing keeps you up at night, Dr. Hanania advises. That's because, true to name, they suppress the cough â keeping the mucous in. If you take anything, âa mucolytic [which breaks down or thins mucous in the respiratory tract] may soothe the coughâ and make it more moist, he says.
Answer: It is not an easy thing to measure the distances to objects in the universe since these objects are usually very far away. We can't just run out there with a ruler! To measure distances in the universe, we will need to construct what is commonly referred to as a cosmic distance ladder.he links below will take you to descriptions of various common methods. 1  Radar-measuring distances in our solar system. 2  Parallax-measuring distances to nearby stars. 3  Cepheids-measuring distances in our Galaxy and to nearby galaxies.
The Earth has a radius of 6400 km. The space shuttle typically orbits the Earth at an altitude of 500 km above Earth's surface. To calculate the gravitational force exerted by the Earth on the orbiting space shuttle you must use Newton's law of gravitation: The distance between the shuttle and the center of the Earth (i.e., 6400 km + 500 km = 6900 km).