Surface tension of liquids
A) increases when wetting agents are added.
B) decreases as the liquid temperature increases.
C) is about the same for all liquids.
D) results from a thin molecular membrane beneath the liquid surface.
E) keeps steel ships afloat.
Answer: B
You might also like to view...
A certain crying baby emits sound with an intensity of 8.0 × 10-8 W/m2. What is the intensity level due to a set of five such crying babies, all crying with the same intensity?
You can neglect any absorption, reflection, or interference of the sound. The lowest detectable intensity is 1.0 × 10-12 W/m2. A) 79 dB B) 69 dB C) 56 dB D) 49 dB E) 36 dB
The "efficiency" of a heat engine is defined to be
A) thermal energy output divided by work input. B) work output divided by thermal energy output. C) work output divided by thermal energy input. D) thermal energy output divided by thermal energy input.
In a hydrogen atom, a given electron has n = 7. How many values can ? have?
A) 6 B) 7 C) 15 D) 33 E) 98
What type of lava does a composite volcano have?
What will be an ideal response?