When water freezes, it expands about nine percent. What would be the pressure increase inside your automobile engine block if the water in there froze? (The bulk modulus of ice is 2.0 × 10^9 Pa, and 1 atm = 1.0 × 10^5 Pa.)
a. 18 atm
b. 270 atm
c. 1 080 atm
d. 1 800 atm
d
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The combination of water with small ceramic particles is a(n) ___________.
Fill in the blank(s) with the appropriate word(s).
Two life preservers have identical volumes, one filled with Styrofoam and the other filled with sand. When the two life preservers are worn by swimmers,
one swimmer floats with part of the preserver above water, and the other swimmer sinks. In this case the buoyant force is greater on the life preserver filled with A) Styrofoam. B) sand. C) same for both
When a 20.8-? resistor is connected across a 15.6-V battery, a current of 500 mA flows. What is the internal resistance of the battery?
a. 20.8 ? b. 10.4 ? c. 31.2 ? d. 0.732 ? e. 1.25 ?
Two identical springs are attached to two identical masses. Both are resting on a frictionless horizontal surface. One of the springs is displaced a distance d from its equilibrium position, while the other is displaced a distance 2d
If both masses are released at the same instant,
which of the springs, A or B, returns to its
unstretched length first?