Answer:
c.The value of T at Recording Station N would be greater than T at Recording Station S.
Explanation:
We can deduce from the information provided that the value of T at recording station N would be greater than T at recording station S.
This problem relates distance with time.
Speed = 
Distance = Speed x time
- Just like any other physical quantity, speed of a substance is directly related to time.
- The larger the time taken the farther the distance it will cover assuming the velocity is constant.
- Earthquake waves for example moves at constant speed with a unique velocity in earth materials.
- The farther the distance, the more time it will take to reach the seismic recording station.
- Since N is a distance of 200km from the epicenter, it will take a greater time and have a higher reading of T to reach the station.
anything except for a and d
The correct answer is <u>C: 0.510 m</u>
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N I C E - D A Y!
Answer:
c.boron-11
Explanation:
The atomic mass of boron is 10.81 u.
And 10.81 u is a lot closer to 11u than it is to 10u, so there must be more of boron-11.
To convince you fully, we can also do a simple calculation to find the exact proportion of boron-11 using the following formula:
(10u)(x)+(11u)(1−x)100%=10.81u
Where u is the unit for atomic mass and x is the proportion of boron-10 out of the total boron abundance which is 100%.
Solving for x we get:
11u−ux=10.81u
0.19u=ux
x=0.19
1−x=0.81
And thus the abundance of boron-11 is roughly 81%.
mole=10 x 10⁻³ : 46 g/mol = 2.17 x 10⁻⁴