A fluid in an insulated, flexible bottle is heated by a high ...

[WhattoUnderstand]

A fluid in an insulated, flexible bottle is heated by a high resistance wire and expands.
 
  If of thermal energy is transferred through heating to the system and it - of work is done on it, how much does the internal (thermal) energy of the fluid change? A) 4.0 kJ
  B) 14 kJ
  C) -4.0 kJ
  D) 45 kJ

Question 2

As you are moving very quickly toward a speaker emitting a pure tone, which characteristics of the sound get larger? (There may be more than one correct choice.)
 
  A) frequency
  B) amplitude
  C) wavelength
  D) period
  E) loudness

[soda0602]

Answer to Question 1

A

Answer to Question 2

A, E

[WhattoUnderstand]

TYSM

[yeungji]

Gracias!