A 10-G Bullet Moving Horizontally with a Speed of 2

question 59

Multiple Choice

A 10-g bullet moving horizontally with a speed of 2.0 km/s strikes and passes through a 4.0-kg block moving with a speed of 4.2 m/s in the opposite direction on a horizontal frictionless surface. If the block is brought to rest by the collision, what is the kinetic energy of the bullet as it emerges from the block?

• A) 0.51 kJ
• B) 0.29 kJ
• C) 0.80 kJ
• D) 0.13 kJ
• E) 20 kJ

Recognize factors influencing physical growth and BMI in children.

Appreciate the role of genetics and environment in determining physical attributes like height and weight.

Understand the significance of physical growth variations within and across cultures.

Comprehend the social and psychological impacts of physical growth and body image during middle childhood.

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Definitions:

Colorblind

A condition where a person is unable to distinguish certain colors, typically due to the absence or malfunction of certain color-detecting cells in the eye.

Probability

A measure of the likelihood that an event will occur, often quantified as a number between 0 and 1.

Immune System

A complex network of cells, tissues, and organs that work together to defend the body against pathogens and diseases.

Antigen-presenting Cells

Specialized cells of the immune system that process and present antigens to T-cells, initiating an immune response.