« previous next »

Author Question: Some light switches that glow in the dark after the lights are turned off employ A) fluorescence. ... (Read 35 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?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

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.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th
Phytochrome controls germination by responding to red/far red light signals. Phytochrome controls germination by responding to red/far red light signals.
Absorbance of Light by Rods and Cones Absorbance of Light by Rods and Cones
Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ... Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ...
Electrophoresis gel in a densitometer. (a) The green light from the slit light source is visible ... Electrophoresis gel in a densitometer. (a) The green light from the slit light source is visible ...
Light beer has about the same amount of alcohol as regular beer Light beer has about the same amount of alcohol as regular beer
Video: System organization - PPM system types (Somatic, Autonomic & Enteric) and Reflex arc types

For a complete list of videos, visit our video library