Suppose we place a 100-g aluminum block with an initial temperature of 100°C in a Styrofoam cup containing a 100-g sample of water at 0°C. (The specific heats of aluminum and water are 900 J·kg-1K-1 and 4200 J·kg-1K-1, respectively.) The system’s final temperature is closest to

A. 0°C.
B. 20°C.
C. 50°C.
D. 80°C.
E. 100°C.


B. 20°C.

Physics & Space Science

You might also like to view...

A 34-kg child on an 18-kg swing set swings back and forth through small angles

If the length of the very light supporting cables for the swing is how long does it take for each complete back-and-forth swing? Assume that the child and swing set are very small compared to the length of the cables. A) 4.4 s B) 4.8 s C) 5.3 s D) 5.7 s

Physics & Space Science

In a star, the condition of balance between the inward force of gravity and the outward force of thermal and radiation pressure is known as _______________ equilibrium

a. hydrostatic b. thermal c. photostatic d. magnetostatic

Physics & Space Science

In Figure OQ32.4, the switch is left in position a for a long time interval and is then quickly thrown to position b. Rank the magnitudes of the voltages across the four circuit elements a short time thereafter from the largest to the smallest

Physics & Space Science

An object 2.0 cm in height is placed at the center of curvature C in front of a concave mirror. What is the height of its image?

A) -0.50 cm B) -1.0 cm C) -1.5 cm D) -2.0 cm E) -6 cm

Physics & Space Science