« previous next »

Author Question: Some light switches that glow in the dark after the lights are turned off employ A) fluorescence. ... (Read 90 times)

audie

  • Hero Member
  • *****
  • Posts: 532
on: Jul 29, 2018
Some light switches that glow in the dark after the lights are turned off employ
 
  A) fluorescence.
  B) resonance.
  C) incandescence.
  D) all of the above
  E) none of the above

Question 2

An aluminum electric tea kettle has a mass of 500 g. It has a 500-W heating coil. How long will it take to heat up 1.0 kg of water from 18C to 98C in the tea kettle? The specific heat of aluminum is 900 J/(kgK).
 
  A) 5 minutes
  B) 7 minutes
  C) 12 minutes
  D) 15 minutes
  E) 18 minutes


Juro

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: E

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

audie

  • Hero Member
  • *****
  • Posts: 532
Reply #2 on: Jul 29, 2018
TY


Juro

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Absorption of light energy by an electron Absorption of light energy by an electron
Ellsworth Kelly, Three Panels: Orange, Dark Gray, Green. Ellsworth Kelly, Three Panels: Orange, Dark Gray, Green.
A “reduced power” warning light indicates a fault with the electronic throttle control system on ... A “reduced power” warning light indicates a fault with the electronic throttle control system on ...
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 ...
When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases ... When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases ...
Dark Blue Eye Color Dark Blue Eye Color
Video: SNP Polymorphysim Microarray Chip - How to Test a Person's DNA

For a complete list of videos, visit our video library