A Block on a Frictionless, Horizontal Surface Is Attached to One

question 89

Multiple Choice

A block on a frictionless, horizontal surface is attached to one end of a spring that is also attached to the wall on the opposite end. When stretched away from equilibrium by 15 cm and released, the block oscillates with a period of 0.25 s. If the mass of the block is 15 kg, what force was required to stretch the spring by the initial 15 cm?

• A) 230 N
• B) 450 N
• C) 710 N
• D) 360 N
• E) 1400 N

Identify and calculate different forecasting accuracy measures such as root mean square error, mean absolute deviation, and mean absolute percentage error.

Distinguish between different types of time series patterns such as trend, seasonal, and cyclical effects.

Utilize historical data to make future sales forecasts using methods like moving average models and exponential smoothing.

Apply the Delphi method for expert opinion-based forecasting and understand its process.

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Definitions:

Absolute Advantage

A concept in international trade that occurs when one country can produce a good or service more efficiently than another country, using the same amount of resources.

Wheat

A cereal grain that is cultivated worldwide and serves as a staple food for a large portion of the world's population.

Specialization

The practice of focusing resources on the production of specific goods or services to increase efficiency and productivity.

Brownies

A type of chocolate dessert or sweet snack that is typically baked in a pan and cut into squares or rectangles, known for its dense and rich texture.