How Does an Underground Oil Pocket Affect Gravity Measurements?

  • Thread starter tavo0116
  • Start date
  • Tags
    Estimate
In summary, estimating a percentage allows us to make predictions or draw conclusions based on incomplete data, by making an educated guess about the proportion of a population with a certain characteristic or behavior. This is done by dividing the number of items with the characteristic by the total number of items in a sample, and multiplying by 100. Common methods for estimating a percentage include surveys, sampling, and statistical analysis. However, estimating a percentage is not always accurate, as it is based on a sample and can be affected by bias or faulty data collection methods. To ensure accuracy, appropriate sampling methods, minimizing bias, and careful analysis of data are important factors. Increasing the sample size can also help improve the accuracy of the estimate.
  • #1
tavo0116
21
0
Problem:
The center of a 1.30 km diameter spherical pocket of oil is 1.30 km beneath the Earth's surface.
Estimate by what percentage g directly above the pocket of oil would differ from the expected value of g for a uniform Earth? Assume the density of oil is 8.10x10^3 kg/m^3

Should I use the equation: F = G (m1 + m2) / r^2 ?
If not, which equation should I use?

Please help me to get started.

Thank you.
 
Physics news on Phys.org
  • #2
Does this seem right way to find g and g'?
 

Attachments

  • oil032.jpg
    oil032.jpg
    17.8 KB · Views: 430

Related to How Does an Underground Oil Pocket Affect Gravity Measurements?

1. What is the purpose of estimating a percentage?

Estimating a percentage allows us to make predictions or draw conclusions based on incomplete data. It is a way to make an educated guess about the proportion of a population that has a certain characteristic or behavior.

2. How do you calculate an estimated percentage?

An estimated percentage is calculated by dividing the number of items with a certain characteristic by the total number of items in a given sample, and then multiplying by 100. For example, if 10 out of 50 people in a sample have a certain characteristic, the estimated percentage would be (10/50) x 100 = 20%.

3. What are some common methods for estimating a percentage?

Some common methods for estimating a percentage include surveys, sampling, and statistical analysis. Surveys involve asking a sample of individuals about a certain characteristic, while sampling involves randomly selecting a subset of a larger population. Statistical analysis uses mathematical techniques to make estimates based on collected data.

4. What are the limitations of estimating a percentage?

Estimating a percentage is not always accurate, as it is based on a sample of data rather than the entire population. The margin of error can also affect the accuracy of the estimate. Additionally, certain factors such as bias or faulty data collection methods can also impact the accuracy of the estimate.

5. How can we ensure the accuracy of estimated percentages?

To ensure the accuracy of estimated percentages, it is important to use appropriate sampling methods, minimize bias, and carefully analyze and interpret the data. It can also be helpful to use multiple methods for estimating percentages and compare the results. Additionally, increasing the sample size can help reduce the margin of error and improve the accuracy of the estimate.

Similar threads

Gravity problem - change in g due to oil pocket
    • Introductory Physics Homework Help
Replies
3
Views
1K
Change of g due to oil deposit
    • Introductory Physics Homework Help
Replies
17
Views
2K
The center of a 1.00 km diameter spherical pocket of oil
    • Introductory Physics Homework Help
Replies
4
Views
4K
Estimating Delta(g)/g for a 1.00 km Diameter Spherical Pocket of Oil
    • Introductory Physics Homework Help
Replies
3
Views
3K
Change in gravity due to oil deposit
    • Introductory Physics Homework Help
Replies
1
Views
2K
Escape velocity of an iron asteroid
    • Introductory Physics Homework Help
Replies
5
Views
1K
Estimate of the greatest possible radius of a rocky planet
    • Introductory Physics Homework Help
Replies
3
Views
861
How much work is done when a satellite is launched into orbit?
    • Introductory Physics Homework Help
Replies
5
Views
1K
How to find the acceleration due to gravity inside a planet?
    • Introductory Physics Homework Help
Replies
3
Views
5K
How fast should the Earth spin for centripital accel. to equal gravity?
    • Introductory Physics Homework Help
Replies
8
Views
2K

Hot Threads

Recent Insights

Back
Top