The Radius of Earth Is 6,378 Km

question 22

Multiple Choice

The radius of Earth is 6,378 km. The force of gravity on a 1 kg ball at Earth's surface is 9.8 kg m/s².  What is the force of gravity on this same ball when the ball is located 12,756 km from Earth's center? Hint: G = 6.67  10^-11 m³/s²/kg

• A) 2.45 kg m/s²
• B) 4.9 kg m/s²
• C) 9.8 kg m/s²
• D) 19.6 kg m/s²
• E) 39.2 kg m/s²

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Definitions:

Sensory Memory

The shortest-term element of memory, which acts as a buffer for stimuli received through the senses and lasts for a very short time.

Unprocessed Stimulation

Information or sensory input that has been received by the brain but has not yet been analyzed, integrated, or responded to consciously.

Echo

A sound that is reflected off a surface and heard again, often used to measure distance or create special audio effects.

Sensory Registers

The initial process where sensory information is stored very briefly before it is processed further or discarded.