science

Hitchhiker 2

Hitchhiker 2 is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hitchhiker 2 rather than just read about it. In short: Hitchhiker 2 (or P-11 4202, P-11 AS and OPS 3316) was a satellite launched by U.S. Air Force.

Key takeaways

Hitchhiker 2 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Hitchhiker 2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Hitchhiker 2 from memory before moving on to harder problems.

Reference excerpt

Hitchhiker 2 (or P-11 4202, P-11 AS and OPS 3316) was a satellite launched by U.S. Air Force. It was launched with the aim of studying and measuring cosmic radiation. The satellite was the second successful satellite of the P-11 program, following the failure of the first Hitchhiker satellite in March 1963. It was launched on October 29, 1963 from Vandenberg Air Force Base, California, on a Thor-Agena launch vehicle. On May 23, 1965, the satellite re-entered the Earth's atmosphere.

Instruments 1 Geiger tube (40-4 MeV) 1 Faraday cup plasma 1 Electron detector (0.3-5.0 MeV) 1 Proton detector (0.7-5.3 MeV) 2 electrostatic analysers (4-100 keV)

Worked examples

Example 1 — a first encounter with Hitchhiker 2

Start with the simplest possible case. Write down what Hitchhiker 2 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hitchhiker 2 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hitchhiker 2 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hitchhiker 2

In research: Hitchhiker 2 appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Hitchhiker 2 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Hitchhiker 2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1963 in spaceflight, so understanding it makes those chapters shorter.
In everyday life: Look for Hitchhiker 2 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Hitchhiker 2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hitchhiker 2 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Hitchhiker 2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hitchhiker 2 in simple terms?

Hitchhiker 2 (or P-11 4202, P-11 AS and OPS 3316) was a satellite launched by U.S. Air Force.

Why does Hitchhiker 2 matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hitchhiker 2?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hitchhiker 2.