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

Author Question: A light ray in air enters and passes through a block of glass. What can be stated with regard to its ... (Read 47 times)

jrubin

  • Hero Member
  • *****
  • Posts: 552
on: Jul 28, 2018
A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from the block?
 a. Speed is less than when in glass.
  b. Speed is same as that before it entered glass.
  c. Speed is same as that in glass.
  d. Speed is less than before it entered glass.

Question 2

How much heat energy is required to vaporize a 1.0-g ice cube at 0C? The heat of fusion of ice is 80 cal/g. The heat of vaporization of water is 540 cal/g, and cwater = 1.00 cal/gC.
 a. 620 cal
  c. 820 cal
  b. 720 cal
  d. 1 kcal


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

B


jrubin

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Compared to a chimpanzee, the human newborn has relatively little room to spare as it passes through Compared to a chimpanzee, the human newborn has relatively little room to spare as it passes through
Some scholars regard Walt Whitman as a poet of nature, and others, a poet of the body—a reference to Some scholars regard Walt Whitman as a poet of nature, and others, a poet of the body—a reference to
The biochemical reactions of near-infrared light The biochemical reactions of near-infrared light
SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels. SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels.
Press up under the cheekbones. Use light to moderate pressure to press into the soft tissues up ... Press up under the cheekbones. Use light to moderate pressure to press into the soft tissues up ...
Apply compression and light effleurage techniques to the foot and ankle to warm the area. Apply compression and light effleurage techniques to the foot and ankle to warm the area.
Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

For a complete list of videos, visit our video library