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Author Question: Americans combined drive about 4.0109 miles per day and their vehicles get an average of 20 miles ... (Read 86 times)

trevg

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on: Nov 5, 2023

Question 1

Iron has a density of 7.87 g/cm3.  What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 1.0 mm? (1 inch = 2.54 cm; 1 lb = 453.6 g)

◦ 6.4 × 103 lb
◦ 6.4 × 104 lb
◦ 1.0 × 105 lb
◦ 4.7 × 107 lb
◦ 4.7 × 108 lb

Question 2

Americans combined drive about 4.0×109 miles per day and their vehicles get an average of 20 miles per gallon of fuel used.  For each 1 kg of gasoline that is burned, about 3.0 kg of CO2  are produced.  How many kilograms of CO2 are emitted into the atmosphere each day by cars in the U.S.?  One gallon of gas weighs about 3.5 kg.

◦ 2.1 × 109 kg
◦ 8.4 × 1011 kg
◦ 1.7 × 108 kg
◦ 93 kg
◦ none of these
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Marked as best answer by trevg on Nov 5, 2023

hvhf4k+549qz8f218jyo@shar

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Reply #1 on: Nov 5, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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trevg

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Reply 2 on: Nov 5, 2023
:D TYSM

Sarahjh

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Reply 3 on: Yesterday
Wow, this really help

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