Sirius a and Sirius B Constitute a Binary Star Pair

question 25

Multiple Choice

Sirius A and Sirius B constitute a binary star pair in which the stars orbit their common center of mass with a period of 49.9 years. The stars are 2.40 × 10¹² m apart. Assume that the two stars have equal masses and that they move in a circle about their common center of mass. What is the mass of each star? G = 6.67 x 10^-11 N·m²/kg².

• A) 5.41 × 10³⁰ kg
• B) 2.70 × 10³⁰ kg
• C) 7.55 × 10³⁰ kg
• D) 3.30 × 10³⁰ kg
• E) 1.65 × 10³⁰ kg

Identify the reflexes tested during physical examinations and their significance.

Understand the protective mechanisms of reflexes in response to stimuli.

Recognize the anatomy and function of spinal nerves and their components.

Understand the concept of reciprocal innervation and its physiological role.

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Definitions:

Intergroup Attitudes

The feelings, beliefs, and behaviors directed towards members of another group, which can be positive or negative.

Sherif's Research

Studies conducted by Muzafer Sherif that focus on social norms, conformity, and the influence of group dynamics on individual behavior.

Negative Attitudes

Predispositions or inclinations to evaluate people, objects, events, or situations unfavorably.

Maximum Obedience

The highest level of adherence or compliance to directives, orders, or instructions from an authority figure.