This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What force is responsible for the spherical shape of liquid droplets and their ability to keep this ... (Read 17 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
on: Jul 16, 2018
What force is responsible for the spherical shape of liquid droplets and their ability to keep this shape when placed into an aerosol suspension?
 
  a. Cohesion
  b. Adhesion
  c. Viscosity
  d. Surface tension

Question 2

According to Pascal's principle, the pressure exerted by a liquid in a container depends on which of the following? 1. Depth of the liquid 2. Density of the liquid 3. Shape of the container
 
  a. 1, 2, and 3
  b. 1 and 2
  c. 2 and 3
  d. 1 and 3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Andromeda18

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
Surface tension is a force exerted by like molecules at a liquid's surface. A small drop of fluid provides a good illustration of this force. As shown in Figure 6-8, cohesive forces affect mole-cules inside the drop equally from all directions. However, only inward forces affect molecules on the surface. This imbalance in forces causes the surface film to contract into the smallest pos-sible surface area, usually a sphere or curve (meniscus). This phenomenon explains why liquid droplets and bubbles retain a spherical shape.

Answer to Question 2

ANS: B
The pressure exerted by a liquid depends on both its height (depth) and weight density (weight per unit volume), which is shown in equation form:
PL = h  dw.


sjones

  • Member
  • Posts: 520
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

brbarasa

  • Member
  • Posts: 308
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

The nurse assesses the patient's ability to use the walker correctly The nurse assesses the patient's ability to use the walker correctly
Drag Force in a Climb Drag Force in a Climb
The arrangement of water molecules in (a) solid ice, and (b) liquid water. The arrangement of water molecules in (a) solid ice, and (b) liquid water.
The gel–liquid crystalline phase transition in a synthetic lipid bilayer The gel–liquid crystalline phase transition in a synthetic lipid bilayer
Classification of bones according to shape Classification of bones according to shape
Testing client’s ability to identify sharp sensations Testing client’s ability to identify sharp sensations
Video: Hormones and the menstrual cycle Animation

For a complete list of videos, visit our video library