Which of the Galilean moons is densest and most geologically active?

A) Europa B) Titan C) Callisto D) Ganymede E) Io


E

Physics & Space Science

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Which of the following statements is true of absolute zero?

A) It is equivalent to zero degrees Celsius. B) It is the temperature at which an object contains no thermal energy that can be extracted. C) It is the temperature at which water freezes. D) It is the highest temperature at which the motion of particles is maximum.

Physics & Space Science

The internal energy of a system such as helium gas can be identified as the total mechanical energy of the ________.

What will be an ideal response?

Physics & Space Science

Which force field can both accelerate an electron and change its speed?

A) electric field. B) magnetic field. C) both of these D) none of the above

Physics & Space Science

To cause an object to move in a circle, a ______________ force is necessary

a. balanced b. functional c. centripetal d. centrifugal

Physics & Space Science