A Uniform Ladder Is 10 M Long and Weighs 400 $\degree$

question 45

Multiple Choice

A uniform ladder is 10 m long and weighs 400 N. It rests with its upper end against a frictionless vertical wall. Its lower end rests on the ground and is prevented from slipping by a peg driven into the ground. The ladder makes a 30 $\degree$ angle with the horizontal. The force exerted on the wall by the ladder is:

• A) 47 N
• B) 74 N
• C) 120 N
• D) 350 N
• E) 460 N

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Definitions:

Observational Learning

The process of acquiring knowledge and skills by observing and imitating the actions of others.

Ethnocentrism

The act of judging another culture solely by the values and standards of one's own culture, often accompanied by a belief in the superiority of one's ethnic group.

Classical Conditioning

A way of learning that emerges from linking a stimulus from nature with one that the environment presents.

Implicit Association Test (IAT)

A psychological assessment tool designed to measure implicit biases that individuals may not be aware of, by analyzing reaction times to specific stimuli.