You Drop a Stone Down a Well That Is 9

question 21

Multiple Choice

You drop a stone down a well that is 9.50 m deep. How long is it before you hear the splash? The speed of sound in air is 343 m/s.

• A) 1.39 s
• B) 1.40 s
• C) 1.41 s
• D) 1.42 s
• E) 1.43 s

Explain the role of social media in e-commerce.

Distinguish between various business models used by online platforms.

Understand the concept of electronic tendering and its mechanisms.

Recognize different payment options available in e-commerce.

---

Definitions:

Stereotype Threat

The risk of confirming negative stereotypes about one's group, which can lead to decreased performance in affected individuals.

Math Performance

Describes how individuals perform or achieve in mathematics, often measured through tests, grades, or assessments.

Negative Effect

A harmful or undesired outcome or influence, possibly resulting from an action, condition, or set of circumstances.

Racist Images

Visual representations that perpetuate stereotypes or discrimination against a race.