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There are no pending questions in the Physics section. However, you can browse the most recent advice from this section below.


Latest Physics Advice  (What's this category about?)

BROWSE PHYSICS ADVICE:
 From:  Mike, New Hampshire, Mar/06/10 submitted on: Ask Agent
Subject:  Snow couch racing
Question:  will a heavier object go faster down a hill on snow vs a lighter one, each having similar type ski's attached to bottom

Rate = 3 (Rated by 2 Council Members)

Manguexa Wagle,
Council Member
  Ammas.com
  Hello ,

The speed at which an object with the ski will move down the slope is determined by the net acceleration . The net acceleration is quite complex to determine but it depends on the gravitati

... Full advice ...
Rate = 2 (Rated by 2 Council Members)

 
Lathaa Manavalan,
Council Member
  Ask Agent
  Heavier objects will go faster than lighter ones down a hill on snow since according to artistotle heavier objects drop down faster than lighter ones.

... Full advice ...
Rate = 2 (Rated by 1 Council Members)

 
 From:  Larhonda, Trinidad and Tobago, Jan/31/10 submitted on: Ammas.com
Subject:  Relation of power and voltage.
Question:  For a filament lamp, if power is directly proportional to voltage squared, will power be quartered when voltage is halved?

Rate = 2.5 (Rated by 3 Council Members)

raghavenda ,
Registered Member
  Ammas.com
  actually power=v^2/R ,r is the resistance and when voltage is halved the power will be quartered.wat ur saying is right.

... Full advice ...
Rate = 3 (Rated by 1 Council Members)

 
Pratheep Yashwant Roy,
Council Member
  Ammas.com
  No The power will be increased

... Full advice ...
Rate = 2.5 (Rated by 1 Council Members)

 
t k,
Registered Member
  Ammas.com
  The power will be one fourth of what it would have been if you had not halved the voltage.

... Full advice ...
Rate = 1.5 (Rated by 1 Council Members)

 
 From:  udai, Jordan, Jan/15/10 submitted on: Ask Agent
Subject:  induction in solenoid wire
Question:  hi. thank you so much for helping me. Q: we have a solenoid with magnetic core inside. a magnetic field B that is going through the core is changing (no mangetic field lines are passing through the wire of the coil. magnetic field lines exist only in the core. so the change in B exist only in the core). will there be any induced current in the coil wire ?!

Rate = 3.5 (Rated by 2 Council Members)

Lathaa Manavalan,
Council Member
  Ask Agent
  Induced Electromagnetic force will be in coil. As the flux changes Induced electromagneticforce too will change and induced current will flow if coil wire is a closed circuit.

... Full advice ...
Rate = 2 (Rated by 1 Council Members)

 
 From:  Shane, UK, Nov/23/09 submitted on: Ammas.com
Subject:  Physics
Question:  Please let me know the advantages of Xenon Light.

Rate = 2.5 (Rated by 6 Council Members)

s. laxmi,
Council Member
  Ammas.com
  Hai,

Xenon is used in flash lamps and arc lamps, and as a general anesthetic. The first excimer laser design used a xenon dimer molecule (Xe2) as its lasing medium, and the earliest laser designs u

... Full advice ...
Rate = 2 (Rated by 1 Council Members)

 
s.j lakshmi,
Council Member
  Ammas.com
  Hai,

Xenon light bulbs are being used in cabinet fixtures, cove lighting, desk lamps, backlighting, step lights, showcase lighting, book case lighting and picture lights...

... Full advice ...
Rate = 2 (Rated by 1 Council Members)

 
 From:  ahesan, india, Sep/29/09 submitted on: Ammas.com
Subject:  Difference between a capacitor and battery
Question:  electronics and communication

Rate = 2 (Rated by 1 Council Members)

madhusudhan rs ,
Council Member
  Ammas.com
  Hi ahesan,

In a way, a capacitor is a little like a battery. Although they work in completely different ways, capacitors and batteries both store electrical energy. If you have read How Batteries W

... Full advice ...
Rate = 3 (Rated by 1 Council Members)

 
Ananth KR,
Registered Member
  APOnline
  Imagine there is a long queue to get in to an aircraft. Security checks are progressing for each of the travelers by a group of five equally efficient security personnel.A gatekeeper allows only five

... Full advice ...
Rate = 2.5 (Rated by 1 Council Members)

 
Manguexa Wagle,
Council Member
  Ammas.com
  Hello

In very simple terms a capacitor is just a storage of electrical charges. These charges stored by capacitor has to be supplied by some active source. Whereas a battery is a generator of elec

... Full advice ...
Rate = 2.5 (Rated by 1 Council Members)

 



 




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