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Ryan, Engineer
Category: Homework
Satisfied Customers: 8653
Experience:  B.S. in Civil Engineering
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# I am about to start another timed physics quiz. Would you want

### Customer Question

I am about to start another timed physics quiz. Would you want to help? This is an example of what I did on work for this chapter: 1. An electric current heats a 225 g copper wire from 20.0 °C to 40.0 °C. How much heat was generated by the electric current? (ccopper = 0.093 cal/gm-deg)
225*0.093*(40-20) = 418.5 cals
Submitted: 4 years ago.
Category: Homework
Expert:  Ryan replied 4 years ago.
Hi,

Thank you for requesting me.

I'll be happy to help. Please post the questions at your convenience, and let me know when the cut-off time is.

Thanks,

Ryan
Customer: replied 4 years ago.
The amount of heat necessary to raise the temperature of 1 gram of water by 1°C is
Question 1 options:
 a) 1 joule b) 1 watt c) 1 Newton d) 1 calorie
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## Question 2(1 point)

When John walks barefoot across hot wooden coals, he is relying on wood’s
Question 2 options:
 a) good conduction b) poor conduction c) low specific heat capacity d) low radiation
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## Question 3(1 point)

The relation f ~ T tells us that high temperature sources emit electromagnetic waves of
Question 3 options:
 a) high frequency b) low frequency c) long wavelength d) high penetrating power
Save

## Question 4(1 point)

Heat comes to Earth from the Sun by a process of
Question 4 options:
 a) conduction b) convection c) radiation d) conduction and convection, though radiation is greater
Save

## Question 5(1 point)

Climate temperature changes for land masses surrounded by water are normally
Question 5 options:
 a) less b) more c) about the same with other factors being the same d) none of the above
Save

## Question 6(1 point)

When air rapidly expands, its temperature normally
Question 6 options:
 a) increases b) decreases c) remains unchanged d) is unaffected, but not always
Save

## Question 7(1 point)

Water turns to steam at a temperature of
Question 7 options:
 a) 100°C b) 273 K c) both of these d) none of these
Save

## Question 8(1 point)

Water changes from a liquid to a solid at temperature of
Question 8 options:
 a) 0°C b) -273 Kelvin c) 0 Kelvin d) -273°C
Save

## Question 9(1 point)

The amount of heat transferred to a system can be measured in
Question 9 options:
 a) watts b) kilograms c) calories or joules d) calories only
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## Question 10(1 point)

Water has a high specific heat capacity, which means that water
Question 10 options:
 a) requires a lot of energy in order to increase in temperature b) gives off a lot of energy in cooling c) absorbs a lot of energy for a small increase in temperature d) all of these
Save

## Question 11(1 point)

Energy radiated by a hot object is carried in
Question 11 options:
 a) thermal energy b) sound waves c) electromagnetic waves d) both sound and electromagnetic waves
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## Question 12(1 point)

Which of these is the largest amount of energy?
Question 12 options:
 a) 1 calorie b) 1 joule c) 1 Calorie d) all are the same
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## Question 13(1 point)

When a solid is changed to the liquid phase, the solid
Question 13 options:
 a) releases energy b) absorbs energy c) expands d) none of these
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## Question 14(1 point)

Which of these temperatures could result from mixing a container of water at 20°C with one at 24°C?
Question 14 options:
 a) 19°C b) 22°C c) 24°C d) more than 24°C
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## Question 15(1 point)

Which of the following emit radiant energy?
Question 15 options:
 a) ice cubes b) the Sun c) Earth d) all of these and every object
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## Question 16(1 point)

When a liquid is changed to a gas, the liquid
Question 16 options:
 a) releases energy b) absorbs energy c) expands d) none of these
Save

## Question 17(1 point)

Radiant energy emitted by Earth has the name
Question 17 options:
Save

## Question 18(1 point)

Temperature is generally proportional to a substance’s
Question 18 options:
 a) vibrational kinetic energy b) average translational kinetic energy c) rotational kinetic energy d) thermal energy
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## Question 19(1 point)

A high temperature source radiates relatively
Question 19 options:
 a) long wavelengths b) low frequencies of radiation c) short wavelengths d) none of these
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## Question 20(1 point)

When heat is added to a bucket of 20°C water, there is an increase in
Question 20 options:
 a) temperature only b) thermal energy only c) temperature and thermal energy d) neither temperature nor thermal energy
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45 minutes

Expert:  Ryan replied 4 years ago.
Hi,

Ok, thanks,

Ryan
Customer: replied 4 years ago.
20 minutes left
Customer: replied 4 years ago.
11 minutes
Expert:  Ryan replied 4 years ago.

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Ryan, Engineer
Category: Homework
Satisfied Customers: 8653
Experience: B.S. in Civil Engineering
Customer: replied 4 years ago.
Thanks!! I missed #10 and #18. Ended up with a 90! I am all good with that! Thank you so much!! It does not tell me what the correct answers are. I will be adding a bonus!
Expert:  Ryan replied 4 years ago.
Hi,

Thank you for the accept and the bonus. Both are greatly appreciated.

As much as I hate being wrong about anything, I'm glad you are happy with the results.

Thanks again,

Ryan

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