physics s3w2 heat transfer

Last updated 3 months ago
25 questions
1

Review: Suppose we have a 200-gram block of aluminum initially at 25°C. If we supply 5000 joules of heat energy to the block, what will be its final temperature? The specific heat capacity of aluminum is 0.9 J/g∘C. use

1

Which property represents the amount of heat required to raise the temperature of a substance?

1

If two substances have the same mass and are heated with the same amount of heat, the substance with the lower specific heat will...

1

When an object is heated, it generally expands due to...

1

The expansion of a substance caused by heating is known as...

1

Reach chapter 15, what questions do you have?

1

A piece of plastic and a piece of metal are both outside on a freezing (0℃) day. They are the same temperature. Why will they feel like they are different temperatures when you touch them?

1

Why can you comfortably hold your fingers closely beside an open candle flame, but not comfortably closely above a candle flame?

1

What is the role of "loose" electrons in heat conductors?

1

As a given mass of air rises, why does it cool down?

1

Why does the direction of coastal winds change from day to night?

1

Why does the hot water warmed by the hot cup below the tank have to rise?

1

Since all objects are absorbing energy from their surroundings, why don't the temperatures of all objects continually increase?

1

How do the wavelengths of radiant energy vary with the temperature of the radiating source

1

If I pour a hot cup of water into a bucket of cold water, they will eventually reach "thermal equilibrium". Define "thermal equilibrium".

1

Two objects can have different amounts of heat, but be at thermal equilibrium

1

Even if the air isn't quite freezing, frost can form on a plant at night, but will not form on a rock nearby. Why?

1

Which will undergo a greater rate of cooling, a red hot poker in a warm oven, or a red-hot poker in a cold room?

1

Categorize each of these as the major type of heat transfer it represents.

  • A hair dryer drying hair
  • Walking barefoot on a hot sidewalk
  • Ironing clothes
  • x-ray imaging
  • frying vegetables in a pan
  • Chimney draft
  • an incandescent bulb
  • solar panels
  • sun burn
  • Ocean currents
  • A lizard warming its belly on a hot rock.
  • microwaving food
  • Blowing on a hot beverage
  • Conduction
  • Convection
  • Radiation
1

Which of the following is a poor insulator?

1

Which mode of heat transfer involves the transfer of heat through direct contact?

1

Which mode of heat transfer occurs when heated particles rise and cooler particles sink?

1

Which mode of heat transfer does not require a medium?

1

What is the function of the silver surface of a thermos bottle?

1

Categorize the concepts here based on your understanding.

  • thermal conductivity
  • how heat is transferred through a solid
  • how heat is transferred through fluids
  • what is heat transfer via radiation?
  • relationship between the difference in temperature and the rate of heat transfer
  • how heat drives air/water currents
  • thermal equilibrium
  • electromagnetic waves in heat transfer.
  • newton's law of cooling
  • I got this
  • I'm shaky
  • So confused