Metal sphere left by alien civilization

• winterwind
In summary, the conversation is about a voltage/charge problem involving a metal sphere floating in space and a probe sent to study it. The probe records different voltages at different distances from the sphere and the question is, what is the charge on the sphere? The equation V = (kq)/r is used to solve for q, but different values of q are obtained for each set of values. The person is unsure of which equation to use to relate charge and voltage.
winterwind
voltage/charge problem

Homework Statement

Imagine a small metal sphere left by some alien civilization is floating in space. A
probe is launched directly at the sphere in order to study it. When the probe is
1000 m from the sphere, it detects a voltage of 110.0 V; and when it’s at 100.0 m
it records 10.0 V. What, if any, is the charge on the sphere?

Homework Equations

I used V = (kq)/r

The Attempt at a Solution

Solve for q to get q = V(r/k). Plug in the values for each situation, and get q. The thing is, I get different values of q for each set of values. I must be using the wrong equation...but I can't figure which equation to use that relates charge and volts.

Thanks!

Last edited:
help anyone?

BUMP

It's due tomorrow!

1. What is this metal sphere left by an alien civilization?

The metal sphere is an object believed to have been left behind by an advanced extraterrestrial civilization. It appears to be made of an unknown metal and has been found in various locations around the world.

2. How was the metal sphere discovered?

The metal sphere was first discovered by a group of hikers in a remote area of the desert. They noticed a strange metallic object protruding from the ground and upon further investigation, realized it was a perfectly spherical object. Since then, other spheres have been found in different parts of the world.

3. What is the significance of the metal sphere?

The metal sphere has sparked much debate and speculation among scientists and researchers. Some believe it could be evidence of extraterrestrial life, while others think it may be a man-made object with advanced technology. Its discovery has opened up new possibilities in the search for life beyond Earth.

4. Has the metal sphere been studied?

Yes, the metal sphere has been extensively studied by scientists and researchers from various fields. X-ray and other imaging techniques have been used to analyze its structure and composition. However, due to the complex and unknown nature of the metal, it has been difficult to determine its origin or purpose.

5. What are some theories about the metal sphere?

There are many theories about the metal sphere, ranging from it being a communication device left by aliens to a probe sent to Earth by an advanced civilization. Some have even suggested that it could be a time capsule or a symbol of peace from another world. However, without concrete evidence, these theories remain mere speculation.

• Introductory Physics Homework Help
Replies
17
Views
578
• Introductory Physics Homework Help
Replies
21
Views
818
• Introductory Physics Homework Help
Replies
97
Views
3K
• Introductory Physics Homework Help
Replies
4
Views
985
• Introductory Physics Homework Help
Replies
6
Views
793
• Introductory Physics Homework Help
Replies
22
Views
1K
• Introductory Physics Homework Help
Replies
1
Views
808
• Introductory Physics Homework Help
Replies
5
Views
3K
• Introductory Physics Homework Help
Replies
7
Views
1K
• Introductory Physics Homework Help
Replies
3
Views
3K