Gravitational field strength
A planet in a charged-particle beam tube has mass \(6.1\times10^{24}\,\text{kg}\). A probe is \(6.8\times10^{6}\,\text{m}\) from its centre. Use \(G=6.67\times10^{-11}\). Calculate gravitational field strength. Enter the numerical result and choose the interpretation that matches the field physics.
Worked practice: physics data and result
Read the physical quantities first, then calculate the result and state what it means.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.