Chapter 1, Problem 1.122E

13. The speed of a particular automobile is 45 mph (miles per hour). Use the following relationships to calculate the value in units of km/s (kilometers per second). 1 km = 0.62 mi 1 h = 60 min 60 s = 1 min %3D 14 Na me the following ooidle ond h0808 ond idontifu on i

The rate at which water falls at the Niagara Falls is about 84,760 ft3/s. How many liters of water fall in a period of exactly 1 hour? A. 9.3005 x 106 L B. 8.6405 x 1015 L C. 8.6405 x 109 L D. 1.4401 x 108 L 2.) What is 83.5 centigrams, cg, in ounces, oz? A. 295 oz B. 23.7 oz C. 0.0295 oz D. 2.37 x 105 3.) If the gas mileage of a Honda Civic car is 38 miles per gallon how many liters of gasoline would the car use to move from the Essex campus to the Catonsville campus? The distance between the two campuses is 37.2 km. (Do not show units in your answer)

The speed of light is 3 x 108 m/sec Assume: 1.6 km/mile 1.If the earth is close to Mars, we are roughly 50 million miles apart. How many minutes will it take for us to communicate with astronauts on Mars? 2.When we are at opposites in our orbits, we are close to 200 million miles apart. How many minutes will it take for us to communicate with astronauts on Mars?