A Cell Phone That Is 8

question 34

Multiple Choice

A cell phone that is 8.90 cm tall is placed in front of a convex mirror.The image of the phone is 7.80 cm tall and is located 14.8 cm from a mirror.What is the mirror's focal length?

• A)-120 cm
• B)-105 cm
• C)+16.9 cm
• D)-13.0 cm
• E)+120 cm

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Definitions:

Private Philanthropy

Financial contributions or aid given by individuals or private organizations to support various causes and non-profit organizations.

Free-rider Problem

A situation where individuals benefit from resources, goods, or services without paying for them, leading to underprovision of those public goods.

Nonrivalry

A property of goods where one person's consumption does not prevent consumption by others, typically relevant in the context of public goods.

Nonexcludability

Nonexcludability is a feature of public goods where it is not possible to prevent individuals from consuming the good, irrespective of whether they have contributed to its provision.