What units in the metric system would you use to measure each of the following
quantities?=
The United States emitted 19.5 million t of nitrogen oxides
(NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many
kilograms of NO were emitted to the atmosphere in the United States during 1987?=19,500,000,000
Complete each statement. (Round to the nearest hundredth.)72 in. =182.88 cm
7 L = 7.35 qt
Samantha’s speedometer reads in kilometers per hour. If
the legal speed limit is 55 mi/h, how fast can she drive?88.5 km per hr
88.5=55km per hr
To answer these questions, we will convert the given units to the corresponding units in the metric system. Let's go through each question step by step:
1. The question asks how many kilograms of nitrogen oxides (NO) were emitted into the atmosphere in the United States in 1987, given that 19.5 million metric tons (t) of NO were emitted. We know that 1 metric ton (t) is equal to 1,000 kilograms (kg). To convert 19.5 million metric tons to kilograms, we multiply 19.5 million by 1,000.
Calculation: 19,500,000 metric tons x 1,000 kg/metric ton = 19,500,000,000 kg
Therefore, 19.5 million metric tons is equal to 19,500,000,000 kilograms.
2. The question states that 72 inches (in) is equivalent to an unknown measurement in centimeters (cm). To convert inches to centimeters, we know that 1 inch is equal to 2.54 centimeters. So, we multiply 72 by 2.54 to get the value in centimeters.
Calculation: 72 in x 2.54 cm/in = 182.88 cm
Therefore, 72 inches is equal to 182.88 centimeters.
3. The question requires us to convert 7 liters (L) to an equivalent measurement in quarts (qt). To convert liters to quarts, we need to know that 1 liter is approximately equal to 1.05668821 quarts. So, we multiply 7 by this conversion factor to get the value in quarts.
Calculation: 7 L x 1.05668821 qt/L = 7.39 qt
Therefore, 7 liters is approximately equal to 7.39 quarts (rounded to the nearest hundredth).
4. The question asks how fast Samantha can drive, given that her speedometer reads in kilometers per hour (km/hr) and the legal speed limit is 55 miles per hour (mi/hr). To convert miles per hour to kilometers per hour, we need to know that 1 mile is equal to approximately 1.609344 kilometers. So, we multiply 55 by this conversion factor to get the equivalent speed in kilometers per hour.
Calculation: 55 mi/hr x 1.609344 km/mi = 88.47 km/hr
Therefore, Samantha can drive at a speed of approximately 88.47 kilometers per hour (rounded to the nearest hundredth).