In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year. If the distance to a star is 5.5 light-years, what is this distance in meters? (There are 365.25 days in one year.)
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- An electron has a mass of 9.11×10−31kg. A proton has a mass of 1.67×10−27kg. What is the mass of a proton in electron-masses?In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year. If the distance to a star is 3.5 light-years, what is this distance in meters? (There are 365.25 days in one year.)The distance from New York to London is 3470 miles. If a plane takes 6.0 hours to fly this distance, what is the plane's average speed in kilometers per hour?
- A nautical mile is the distance between two points located on the Equator with a difference in longitude of 1'. How many km is one nautical mile equal to if the radius of the Earth is 6366 km?A person travels a distance of 5000 km in a car at 100 km/hr. The journey takes 50 hours as measured by his friend who stayed back. Calculate the time measured by the person who is traveling.A car’s odometer (the meter that measures the distance traveled by the car) reads 25,943 km at the start of a trip. It the reads 26,246 km at the end of the trip. The entire trip took a total of 3.5 hours. Determine the car’s average speed in units of (a) km/h and (b) m/s.