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.
Let's use this result to get an estimate of the mass of the Sun. You need to use something orbiting with a known radius and speed. The Earth's orbit is roughly circular with radius = 1.5 Ã 10 11 meters and the Earth moves with a speed 30,000 meters/second (= 30 km/s) in its orbit.The distance is given in meters to match the units of the speed.ecall that speed = (distance travelled)/time, so the speed v = the circumference of the orbit/orbital period. When you substitute this for the speed in the mass relation above, you get M = 4p2 G Ã r3 P2 This may look familiar to you---it is Kepler's third law!