Objects A and B are made of the same substance, but object A is twice as massive as object B. Object A originally has a temperature of 100°C and B has a temperature of 0°C. Suppose these objects are put inside a well-insulated cup and are allowed to come to a common temperature Tf . What is that temperature? Select the closest answer.
A. 75°C
B. 67°C
C. 50°C
D. 33°C
E. 25°C
B. 67°C
Physics & Space Science
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Which of these Galilean satellites is most geologically active?
a. Io b. Europa c. Callisto d. Ganymede
Physics & Space Science
Projectile Motion: A projectile is fired from ground level with a speed of 150 m/s at an angle 30° above the horizontal on an airless planet where g = 10.0 m/s2. What is the horizontal component of its velocity after 4.0 s?
A. 150 m/s B. 35 m/s C. 130 m/s D. 75 m/s E. 38 m/s
Physics & Space Science
Which of these are good conductors?
A) feathers. B) wood. C) snow. D) all the above E) none of the above
Physics & Space Science
An assumption that Earth processes occurring today have always occurred is called
A) the principle of superposition. B) uniformitarianism. C) the principle of original horizontality. D) theory of unconformity.
Physics & Space Science