A Planet Is Made of Two Distinct Materials

question 57

Multiple Choice

A planet is made of two distinct materials.From the core to R/2,the density of the material is 4000 kg/m³,and from R/2 to R the density is 3000 kg/m³.What is the gravity at the surface of the planet if R = 5000 km?

• A)0.699 m/s²
• B)3.66 m/s²
• C)4.19 m/s²
• D)4.38 m/s²
• E)4.99 m/s²

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Definitions:

Dynamic Memory Allocation

The process of allocating memory during the runtime of a program, allowing for flexible use of memory resources.

Run-Time Allocation

The process of allocating memory during the execution of a program, typically using functions like malloc() in C.

Self-Referencing Structures

Data structures in programming that contain references to instances of the same structure, enabling recursive relationships.

NULL Pointer

A pointer that does not point to any object or function, effectively representing the absence of a value or a null reference.