1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alinara [238K]
3 years ago
11

What did physicist James Joule's famous paddle wheel experiment demonstrate?

Physics
2 answers:
Vinvika [58]3 years ago
8 0

Answer:

that the initial gravitational potential energy of the masses transformed into kinetic energy of the paddles and then to thermal energy in the water

Explanation:

Joule was one of the foremost scientists to opine that one form of energy could be converted into other forms. In the famous "paddle wheel" experiment he used a falling weight to pull a string that turned a paddle wheel submerged in a bucket of water. It was discovered that the mechanical energy released by the falling weight was converted into heat energy by the paddle wheel. Joule then measured the amount of heat energy absorbed by the water by recording the temperature of the water before and after the paddle wheel began moving . He discovered that the increase in water temperature was directly related to the amount of kinetic energy released.

PilotLPTM [1.2K]3 years ago
7 0

<u>Answer </u>

A. that the initial gravitational potential energy of the masses transformed into kinetic energy of the paddles and then to thermal energy in the water


<u>Explanation</u>

James Joule allowed some water to fall from a height of 1 foot. the water would turn a paddle wheel at the bottom causing a temperature of water to raise.

The height form which the water fell, mass and the temperature of water was measured and used to calculate mechanical equivalent of heat.

From the choices given the best answer is A. that the initial gravitational potential energy of the masses transformed into kinetic energy of the paddles and then to thermal energy in the water.

You might be interested in
You are wearing earbuds or headphones to listen to your music but your family members can hear it as well. They tell you that it
allsm [11]

If it’s loud enough for your family to hear it, it’s best you turn it down. It could cause permanent damage to your ear drums if it’s loud enough and you could start to lose your hearing. So if your family were to tell you to turn it down, you should probably just turn it down!

5 0
3 years ago
If a rock sample has a mass of 1.17 g and a volume of 0.33 cm3, what type of rock is it?
Marat540 [252]

The correct answer is diamond

5 0
3 years ago
Read 2 more answers
1. Which of the following states would likely get hit by both hurricanes and tornadoes? (Points : 1)
bogdanovich [222]
I would have to say Texas because, obviously, its on the coast, and because I know for a fact Oklahoma is VERY prone to Tornadoes and I also know Dallas (and surrounding areas) has a few tornadoes a year:)

I hope I helped:)
  
<span />
5 0
3 years ago
Read 2 more answers
A skater extends her arms, holding a 2 kg mass in each hand. She is rotating about a vertical axis at a given rate. She brings h
Usimov [2.4K]

Explanation:

It is known that relation between torque and angular acceleration is as follows.

                    \tau = I \times \alpha

and,       I = \sum mr^{2}

So,      I_{1} = 2 kg \times (1 m)^{2} + 2 kg \times (1 m)^{2}

                       = 4 kg m^{2}

      \tau_{1} = 4 kg m^{2} \times \alpha_{1}

     \tau_{2} = I_{2} \alpha_{2}

So,      I_{2} = 2 kg \times (0.5 m)^{2} + 2 kg \times (0.5 m)^{2}

                     = 1 kg m^{2}

 as \tau_{2} = I_{2} \alpha_{2}

                   = 1 kg m^{2} \times \alpha_{2}        

Hence,     \tau_{1} = \tau_{2}

                  4 \alpha_{1} = \alpha_{2}

            \alpha_{1} = \frac{1}{4} \alpha_{2}

Thus, we can conclude that the new rotation is \frac{1}{4} times that of the first rotation rate.

8 0
3 years ago
Which of the following type of personal debts is usually considered wise and justified? A. credit card purchases of luxuries tha
NeTakaya

Answer:

C. Money to pay off other debts and interest

3 0
3 years ago
Read 2 more answers
Other questions:
  • - Blank - is the process of the messenger RNA molecule copying the genetic code from the DNA molecule in the nucleus.
    13·1 answer
  • Why do electric field lines explain why like charges repel and opposite charges attract?
    13·1 answer
  • Help awnser need experts​
    5·1 answer
  • Tim puts his spare change in a jar each day when he comes home. When the jar is full he separates the coins and takes them to th
    15·1 answer
  • A 36,287 kg truck has a momentum of 907,175 kg • . What is the truck’s velocity
    15·2 answers
  • What is the resultant force of the free body diagram?
    9·1 answer
  • A photon with a frequency of 5.48 × 1014 hertz is emitted when an electron in a mercury atom falls to a lower energy level. Iden
    14·1 answer
  • The sun's energy is stored in fossil fuels. true or false.
    9·1 answer
  • What is the energy contained in a 1.30 m3 volume near the Earth's surface due to radiant energy from the Sun
    6·1 answer
  • The diagram below shows a model of the Earth's orbit around the Sun.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!