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

Author Question: As the angle of incidence is decreased for a ray incident on a reflecting surface, the angle between ... (Read 70 times)

student77

  • Hero Member
  • *****
  • Posts: 567
on: Jul 28, 2018
As the angle of incidence is decreased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value?
 a. 90
  c. 45
  b. 180
  d. zero

Question 2

An inventor develops a stationary cycling device by which an individual, while pedaling, can convert all of the energy expended into heat for warming water. How much mechanical energy is required to increase the temperature of 300 g of water (enough for 1 cup of coffee) from 30C to 90C? (1 cal = 4.186 J, the specific heat of water is 4186 J/kg  C)
 a. 94,000 J
  c. 5400 J
  b. 75,000 J
  d. 14 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Silverbeard98

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

B


student77

  • Member
  • Posts: 567
Reply 2 on: Jul 28, 2018
Excellent

cam1229

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

The surface of the human brain The surface of the human brain
A rubber mallet used to deliver a force to an object without harming the surface. A rubber mallet used to deliver a force to an object without harming the surface.
Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ... Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ...
Body Wave and Surface Wave Travel Body Wave and Surface Wave Travel
Variations in the Ocean’s Surface Temperature and Salinity with Latitude Variations in the Ocean’s Surface Temperature and Salinity with Latitude
Sea Surface Temperatures Sea Surface Temperatures
Video: Structures that affect circulation - kidneys, blood volume and venous tone

For a complete list of videos, visit our video library