Water help: Could someone please check my physics homework? - Help.com

Could someone please check my physics homework?

! Due in a few days!

1. What would be wrong if water had a lower specific heat?
*a. The temperature would decrease more rapidly when water gives up energy.
b. Ponds would be less likely to freeze.
c. Water would readily be cooled to the freezing point.

2. Which statement is wrong?
*a. When the same amount of heat produces different changes in temperature in two sub-stances of the same mass, we say that they have different specific heat capacities.
b. Different substances have different thermal properties due to differences in the way energy is stored internally in the substances.
c. Adding the same amount of heat to two different objects will produce the same in-crease in temperature.
d. Each substance has its own characteristic specific heat capacity.
e. Temperature measures the average kinetic energy of random motion, but not other kinds of energy.

3. If the air in your room is in thermal equilibrium, which of following is wrong?
a. The molecules of the air have the same average kinetic energy.
b. Different parts of your room have the same average temperature.
c. The molecules of the air have the same average speed.
*d. The molecules of the air exchange energy with each other at all times.

4. Iceland, so named to discourage conquest by expanding empires, is not at all ice-covered like Greenland and parts of Siberia, even though it is close to the Arctic Circle. The average winter temperature of Iceland is considerably higher than in the regions at the same latitude in eastern Greenland and central Siberia. What explains this?
a. Neither is true.
b. Iceland is below sea level.
*c. The climate of Iceland is moderated by the surrounding water.
d. Both are true.

5. What do you say about the temperature of water at the bottom of Niagara Falls?
a. the same as the temperature at the top
b. much lower than the temperature at the top
c. a little lower than the temperature at the top
d. It’s impossible to predict without a measurement.
*e. a little higher than the temperature at the top
f. much higher than the temperature at the top

6. In your room there are things such as tables, chairs, other people, and so forth. Which of these has a temperature greater than the temperature of the air?
a. tables, chairs and other people
*b. people
c. tables
d. chairs
e. All are wrong

This open post was written 11 months, 2 weeks ago | V/U/S: 1,127, 6, 0 | Edit Post | Leave a reply | Report Post


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lucif offline Verified User (1 year, 3 months) Long Term User Shouts: 7 #
An Unknown Location | 11 months, 2 weeks ago (11 hours, 4 minutes after post)

1. The mercury or any other form of liquid thermometer measuring, is also heated by solar heat, that subjects the thermometer more profoundly then the air surrounding it. So a little higher.

2. Considering which kind of energy? Potential, kinetic, chemical, or just mass.?
mass-wise an iceberg, chemically seen a laptop.

3. b

4. b

5….

these are thermodynamics assignements.
Do your homework yourself…

Quote this reply Report this reply to moderators
Help me with: GRR!
ss_army offline Verified User (2 years, 8 months) Long Term User Shouts: 0 #
An Unknown Location | 11 months, 2 weeks ago (13 hours, 15 minutes after post)

help, not just answers

Quote this reply Report this reply to moderators

ss_army closed this post.

ss_army edited this post 11 months, 2 weeks ago. Read the previous text »

need help with physics again please!!!

1. How does the temperature of a thermometer outdoors on a sunny day compare with the temperature of the air?
a. All are wrong.
b. A little lower
c. Much lower
d. The same
e. A little higher

2. Which of the following has the greatest amount of internal energy?
a. a cup of cold water
b. a pencil
c. an iceberg
d. a laptop

3. Consider the following statement:
Water has a high specific heat capacity.
a. It’s not true.
b. It’s always true. A watermelon stays cool
for a longer time than sandwiches when both
are removed from a cooler on a hot day.
c. It’s true only if water is not mixed with
other substances; for example, milk would
have low specific heat.

4. What would be wrong if water had a lower specific heat?
a. The temperature would decrease more rapidly when water gives up energy.
b. Making tea would be much faster.
c. Ponds would be less likely to freeze.
d. Water would readily be cooled to the freezing point.

5. Which statement is wrong?
a. When the same amount of heat produces different changes in temperature in two sub-stances of the same mass, we say that they have different specific heat capacities.
b. Different substances have different ther-mal properties due to differences in the way energyis storedinternallyin the substances.
c. Adding the same amount of heat to two different objects will produce the same in-crease in temperature. d. Each substance has its own characteristic
specific heat capacity.
e. Temperature measures the average ki-netic energy of random motion, but not other kinds of energy.

6. If the air in your room is in thermal equilib-rium, which of followingis wrong?
a. The molecules of the air have the same
average kinetic energy.
b. Different parts of your room have the same average temperature.
c. The molecules of the air have the same average speed.
d. The molecules of the air exchange energy
with each other at all times.

7. Iceland, so named to discourage conquest by
expanding empires, is not at all ice-covered
like Greenland and parts of Siberia, even
though it is close to the Arctic Circle. The
average winter temperature of Iceland is con-
siderably higher than in the regions at the
same latitude in eastern Greenland and cen-
tral Siberia.
What explains this?
a. Neither is true.
b. Iceland is below sea level.
c. The climate of Iceland is moderated by
the surrounding water.
d. Both are true.

8. What do you say about the temperature of water at the bottom of Niagara Falls?
a. the same as the temperature at the top
b. much lower than the temperature at the top
c. a little lower than the temperature at the top
d. It’s impossible to predict without a mea-surement.
e. a little higher than the temperature at the top
f. much higher than the temperature at the top

9. At what common temperature will a block of
wood and a block of metal both feel neither
hot nor cold to the touch?
a. At room temperature
b. At the freezing point
c. When the temperature of the blocks is higher than the temperature of your hand
d. When the temperature of the blocks is lower than the temperature of your hand
e. When the temperature of the blocks is the same as the temperature of your hand

10. In your room there are things such as tables, chairs, other people, and so forth. Which of these has a temperature greater than the temperature of the air?
a. tables, chairs and other people
b. people
c. tables
d. chairs
e. All are wrong.

ss_army reopened this post.

ss_army edited this post 11 months, 2 weeks ago. Read the previous text »

Could someone please check my physics homework?! Due in a few days!

1. What would be wrong if water had a lower specific heat?
*a. The temperature would decrease more rapidly when water gives up energy.
b. Ponds would be less likely to freeze.
c. Water would readily be cooled to the freezing point.

2. Which statement is wrong?
*a. When the same amount of heat produces different changes in temperature in two sub-stances of the same mass, we say that they have different specific heat capacities.
b. Different substances have different thermal properties due to differences in the way energy is stored internally in the substances.
c. Adding the same amount of heat to two different objects will produce the same in-crease in temperature.
d. Each substance has its own characteristic specific heat capacity.
e. Temperature measures the average kinetic energy of random motion, but not other kinds of energy.

3. If the air in your room is in thermal equilibrium, which of following is wrong?
a. The molecules of the air have the same average kinetic energy.
b. Different parts of your room have the same average temperature.
c. The molecules of the air have the same average speed.
*d. The molecules of the air exchange energy with each other at all times.

4. Iceland, so named to discourage conquest by expanding empires, is not at all ice-covered like Greenland and parts of Siberia, even though it is close to the Arctic Circle. The average winter temperature of Iceland is considerably higher than in the regions at the same latitude in eastern Greenland and central Siberia. What explains this?
a. Neither is true.
b. Iceland is below sea level.
*c. The climate of Iceland is moderated by the surrounding water.
d. Both are true.

5. What do you say about the temperature of water at the bottom of Niagara Falls?
a. the same as the temperature at the top
b. much lower than the temperature at the top
c. a little lower than the temperature at the top
d. It’s impossible to predict without a measurement.
*e. a little higher than the temperature at the top
f. much higher than the temperature at the top

6. At what common temperature will a block of wood and a block of metal both feel neither hot nor cold to the touch?
a. At room temperature
b. At the freezing point
c. When the temperature of the blocks is higher than the temperature of your hand
d. When the temperature of the blocks is lower than the temperature of your hand
*e. When the temperature of the blocks is the same as the temperature of your hand

7. In your room there are things such as tables, chairs, other people, and so forth. Which of these has a temperature greater than the temperature of the air?
a. tables, chairs and other people
*b. people
c. tables
d. chairs
e. All are wrong

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