An Alpha Particle (A Helium Nucleus, Having Charge $+ 2 e$

question 30

Multiple Choice

An alpha particle (a helium nucleus, having charge $+ 2 e$ and mass $6.64 \times 10 ^ { - 27 } \mathrm {~kg}$ ) moves head-on at a fixed gold nucleus (having charge $+ 79 e$ ) . If the distance of closest approach is $2.0 \times 10 ^ { - 10 } \mathrm {~m}$ , what was the speed of the alpha particle when it was very far away from the gold? $\left( k = 1 / 4 \pi \varepsilon _ { 0 } = \right.$ $\left. 9.0 \times 10 ^ { 9 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { C } ^ { 2 } , e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

• A) \(2.3 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)
• B) \(4.6 \times 10 ^ { 6 } \mathrm {~m} / \mathrm { s }\)
• C) \(2.3 \times 10 ^ { 6 } \mathrm {~m} / \mathrm { s }\)
• D) \(4.6 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)

Comprehend the concept and criteria of unilateral contracts through real-world examples.

Distinguish between different types of contracts and their bindings such as option, unilateral, and formal contracts.

Apply general contract principles to specific scenarios involving misprints, advertisements, and solicitations.

Explain how an offer can be terminated and the effects of said termination on potential contracts.

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Definitions:

Dibutyl Ether

An organic compound formed by the dehydration of butanol, used as a solvent and in chemical synthesis.

Atomic Number

The number of protons in the nucleus of an atom, which defines the element's identity.

Mass Number

The total number of protons and neutrons in an atom's nucleus, representing the atom's mass more closely than the atomic number.

Spectral Data

Information obtained from analyzing the spectrum of light absorbed, emitted, or scattered by materials, used in identifying chemical substances.