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
mart [117]
3 years ago
6

Uest1. State Newton's law of cooling.​

Physics
1 answer:
garik1379 [7]3 years ago
6 0

Answer:

Newton's law of cooling states that the rate of heat loss of a body is directly proportional to the difference in the temperatures between the body and its surroundings. The law is frequently qualified to include the condition that the temperature difference is small and the nature of heat transfer mechanism remains the same. As such, it is equivalent to a statement that the heat transfer coefficient, which mediates between heat losses and temperature differences, is a constant. This condition is generally met in heat conduction (where it is guaranteed by Fourier's law) as the thermal conductivity of most materials is only weakly dependent on temperature. In convective heat transfer, Newton's Law is followed for forced air or pumped fluid cooling, where the properties of the fluid do not vary strongly with temperature, but it is only approximately true for buoyancy-driven convection, where the velocity of the flow increases with temperature difference. Finally, in the case of heat transfer by thermal radiation, Newton's law of cooling holds only for very small temperature differences.

When stated in terms of temperature differences, Newton's law (with several further simplifying assumptions, such as a low Biot number and a temperature-independent heat capacity) results in a simple differential equation expressing temperature-difference as a function of time. The solution to that equation describes an exponential decrease of temperature-difference over time. This characteristic decay of the temperature-difference is also associated with Newton's law of cooling

You might be interested in
A conical container of radius 6 ft and height 18 ft is filled to a height of 11 ft of a liquid weighing 64.4 lb divided by ft cu
prisoha [69]

Answer:

Hello there, please see explanations for step by step answer.

Explanation:

Radius 6 ft and

Height 18 ft is filled to a height of 11 ft of a liquid weighing 64.4 lb divided by ft cubedlb/ft3.

How much work will it take to pump the contents to the​ rim.

See attached documents for clear solvings and further step by step explanations

4 0
3 years ago
The movement of water into the atmosphere as it changes from a liquid to a gas is called _____.
nekit [7.7K]
Evaporation . Because it drys up and turns into gas
5 0
3 years ago
Read 2 more answers
Which action would be most likely to cause hearing loss?
Archy [21]
If you dont wear protection while shooting a rifle it will damge your hear
4 0
3 years ago
Read 2 more answers
Attempt 3 of 2
Wewaii [24]

Answer:

mass.

Explanation:

other physical factors are changeable but the mass of a particular substance is always constant.

6 0
3 years ago
A swimming pool is 4.0 m in depth; a swimmer at this depth feels discomfort in the ear. Calculate the net force on a 0.50-cm-dia
Mashcka [7]

The net force on a 0.50-cm-diameter eardrum is mathematically given as

F= 0.76969 N

<h3>What is the net force on a 0.50-cm-diameter eardrum?</h3>

Generally, the equation for Pressure is  mathematically given as

P = ρgh

Therefore

P= 1000*9.8*4

P= 39200 Pa

Where

A= pi*(0.005/2)^2

Generally, the equation for Net force is  mathematically given as

F = PA

F= 39200 *( pi*(0.005/2)^2)

F= 0.76969 N

In conclusion, The net force is

F= 0.76969 N

Read more about Pressure

#SPJ1

5 0
1 year ago
Other questions:
  • 18. What do you call a change in state from a liquid to a gas?
    13·2 answers
  • Which statement best describes an atom? (2 points)
    6·2 answers
  • A pickup truck has a width of 79.0 in. If it is traveling north at 42 m/s through a magnetic field with vertical component of
    12·1 answer
  • Match each media portrayal with the type of behavior the media portrayal is
    14·1 answer
  • Observer A, who is at rest in the laboratory, is studying a particle that is moving through the laboratory at a speed of v=0.8c
    15·1 answer
  • Which of the following is true about scientific knowledge?
    7·1 answer
  • As our Sun exhausts its supply of hydrogen, it will cool down by 1000 to 2000 Kelvin. But it will also become about 100 times br
    9·1 answer
  • Two people are trying to pull a 5-kilogram block in opposite directions. The first person pulls to the right with a force of 25
    13·1 answer
  • PLS ANSWER FAST WILL GIVE BRAINLY!!!!
    9·1 answer
  • What can be correctly concluded from this experiment?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!