« previous next »

Author Question: A small underwater pool light is 1.26 m below the surface of a swimming pool. What is the radius of ... (Read 113 times)

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
on: Jul 28, 2018
A small underwater pool light is 1.26 m below the surface of a swimming pool. What is the radius of the circle of light on the surface, from which light emerges from the water? (nwater = 1.333).
 a. 0.77 m
  c. 1.13 m
  b. 0.57 m
  d. 1.43 m

Question 2

When a wool blanket is used to keep warm, what is the primary insulating material?
 a. wool
  b. air
  c. the trim around the edge of the blanket
  d. a thin layer of aluminum foil (usually not apparent) inside the blanket


pikon

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Surface Tension Surface Tension
Small Town USA: Struggling to Survive Small Town USA: Struggling to Survive
The electromagnetic spectrum. Ionizing radiation is only a small portion of the electromagnetic ... The electromagnetic spectrum. Ionizing radiation is only a small portion of the electromagnetic ...
A laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each ... A laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each ...
The radius of a semicircle is 2 kilometers. What is the semicircle's area? The radius of a semicircle is 2 kilometers. What is the semicircle's area?
Summary of digestion and absorption in the small intestine Summary of digestion and absorption in the small intestine
Video: Biological organic compounds

For a complete list of videos, visit our video library