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Lane Rojas
04/02/2024 · High School
A hydrogen ion concentration of 0.00001 moles per liter
a. is characteristic of pure water
b. is characteristic of some acids
c. can be expressed as pH 4
d. can be expressed as \( 10 ^ { - 4 } \) moles per liter
Hello! I just need the answer for part C Thank you
The Richter scale provides a measure of the magnitude of an earthquake. The following formula shows a relationship between the amount of energy released and the Richter number.
\( M = \frac { 2 } { 3 } \log \frac { E } { 0.007 } \)
where\( E \)is measured in kilowatt-hours. a. What value of E gives a Richter number\( M = 8.2 \)?\( 1.397 ( 10 \). (Use scientific notation. Use the multiplication symbol in the math palette as needed. Round to three decimal places as needed.) b. If a particular household uses\( 248 \)kWh per month, how many months would the energy released by an earthquake of this magnitude power\( 10 \)million households?
\( 5.6 \)(Round to one decimal place as needed.) c. Find the rate of change of the Richter number\( M \)with respect to energy when\( E = 60,000 kWh \). (Round to seven decimal places as needed.)
Find the indicated length.
6. Find MP.
7. Find RT
8. Find UW
What is the next number in the sequence below?
5
3
9
13
23
Question 8 of 10
You are helping with some repairs at home. You drop a hammer and it hits the floor at a speed of 4 feet per second. If the acceleration due to gravity (g) is 32 feet/second\({ } ^ { 2} \), how far above the ground (h) was the hammer when you dropped it? Use the formula:\[v= \sqrt { 2 g h} \]A. 0.25 feet
B. 1.0 foot
C. 0.5 feet
D. 16.0 feet
Count by hundreds from 6 up to 906
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