An Artificial Earth Satellite Is Moved from a Circular Orbit

question 38

Multiple Choice

An artificial Earth satellite is moved from a circular orbit with radius R to a circular orbit with radius 2R.During this move:

• A)The gravitational force does no work.
• B)The gravitational force does positive work.
• C)The gravitational force does negative work.
• D)The work done by the gravitational force cannot be determined without knowing the path of the satellite.
• E)The work done by the gravitational force cannot be determined without knowing what force caused the satellite to change its orbit.

---

Definitions:

Anti-Rh Antibodies

Immune system proteins that target Rh antigens on red blood cells, important in blood transfusion compatibility and pregnancy complications such as Rh disease.

Transfusion Reaction

An adverse response that occurs when the immune system of a person receiving a blood transfusion attacks the donor blood cells.

Rh Factor

An antigen present on the surface of red blood cells, important in determining blood type and compatibility for transfusions.

Antigen B

A specific marker found on the surface of certain blood cells, contributing to blood type differentiation in the ABO blood group system.