If the De Broglie Wavelength of an Electron Is 380

question 49

Multiple Choice

If the de Broglie wavelength of an electron is 380 nm,what is the speed of this electron? (m_electron = 9.11 × 10^-31 kg,h = 6.626 × 10^-34 J ∙ s)

• A)2.0 km/s
• B)3.8 km/s
• C)1.9 km/s
• D)4.1 km/s
• E)5.2 km/s

Explain the role of heredity and environment in shaping temperament and attachment.

Describe how attachment styles are assessed and their implications for child development.

Understand the concept of imprinting and its relevance to attachment theory.

Identify the effects of parental responsiveness on the development of secure attachment.

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Definitions:

Contact Area

The surface or region where two objects meet or press against each other, often critical for the transfer of force or heat.

Duo-servo Brakes

A type of drum brake system where each shoe acts as a servo to the other, enhancing braking efficiency, commonly found in heavier vehicles.

Self-energizing

Refers to a mechanism in brake systems where the brake shoes are designed to use the motion of the vehicle to increase the force applied to the drum, enhancing braking efficiency.

Non-servo Type Brake

A brake system where the shoes do not use the rotation of the drum to self-apply, resulting in a simpler design often used in rear brakes.