Question 988924: 1. 3.
5.
7. 9.
45 mi/hr = ______ ft/sec
26 cm/sec = _________ m/min
2.5 qt/min = ______ gal/hr
4 c/min = _______ qt/hr 7 cup/sec = ______ gal/hr
2. 18 mi/hr = _______ ft/sec
4. 32 cm/s = ________ m/min
6. 4.8 qt/ min = _______ cup/sec 8. 7 yds/sec = ________ mile/hr 10. 20 cm/hr = _______ m/min
Part II: Problem-solving
1. Each member of a class of 28 students needs 12.5 grams of sodium chloride (salt) for a plant-growth experiment. The teacher provides a new 1.5-lb container of the salt. If each student uses the proper amount, what is the mass of the salt that will be left in the container
a. Reread the question in the problem. In what units should the final answer be?
b. First, find the total mass of salt used.
c. Convert the amount of salt in the container from lbs to grams. Use 1 lb = 453.6 grams as a conversion factor. Write it as a ratio to eliminate pounds.
d. Use the answers from parts b and c to find the amount of salt left in the container.
2. The distance light travels through space in one year is called a light-year. If light travels 3.0 × 108 meters per second, determine the number of kilometers in a light-year. Assume a 365-day year.
a. Write the conversion factor you can use to change meters to kilometers. Use scientific notation. Then show how to find the number of kilometers light travels per second.
b. To solve this problem you need to convert seconds to minutes, minutes to hours, and hours to days. Write the conversion factor for each.
c. Use your answers from a and b to determine the number of kilometers that light travels in one year. Answer by macston(5194) (Show Source):
You can put this solution on YOUR website! .
ANSWER: 45 miles per hour is 66 feet per second.
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LIMIT OF ONE QUESTION PER POST.
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Do not try to dump your homework in one post.
Have you tried to answer any of these?
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Multiple unrelated questions decrease the chance of getting an answer,
but I (personally) will only answer 1 question or problem, (my choice),
so you've wasted your time typing more than one question.
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Have a nice weekend.
