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3 years ago

What must be true about two objects if heat is flowing between them?

Physics

1 answer:

netineya [11]3 years ago

8 0

Answer:

The objects must be different temperatures.

Explanation:

For heat to flow between two objects, heat must be flowing between them. The thermal gradient allows for the flow of heat. Heat is a form of energy that is dissipated from one place to another based on temperature difference.

Temperature is the degree of hotness or coldness of body. It is power by heat energy between two bodies.

Heat generally flows from a body at high temperature to one at low temperature. When thermal equilibrium is established and both bodies have the same temperature, heat will stop to flow.

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Please help me with this question guys.

katen-ka-za [31]

Answer:

The average speed is 22.2 km/h

Explanation:

Average Speed

Given an object travels a total distance d and took a total time t, then the average speed is:

$\displaystyle \bar v=\frac{d}{t}$

The mailman first drives d1=7 km at v1=15 km/h. The time taken to drive is:

$\displaystyle t1=\frac{d1}{v1}=\frac{7}{15}=0.467\ h$

Then he drives d2=7 km at v2=43 km/h taking a time of:

$\displaystyle t2=\frac{d2}{v2}=\frac{7}{43}=0.163\ h$

The total time is

t=0.467 h + 0.163 h = 0.63 h

The total distance is

d = 7 km + 7 km = 14 km

The average speed is:

$\displaystyle \bar v=\frac{14}{0.63}=22.2\ km/h$

The average speed is 22.2 km/h

7 0

2 years ago

In which general compass traction is this hurricane moving

Ksenya-84 [330]

Answer:

It looks like its moving north.

Explanation:

3 0

3 years ago

Write atleast name of five devices which work under the principles of physics

Colt1911 [192]

You could say almost anything.
For example:
phones,
cars,
computers,
clocks,
hydraulics,
bicycles,
the hadron collider,
Planes,
and so on.

3 0

3 years ago

Read 2 more answers

(will give brainliest to whoever is first and gives reason) A mass is spun in a circle with a frequency of 40Hz. What is the per

Blizzard [7]

Answer:

$\huge\boxed{T = 0.025\ seconds}$

Explanation:

Given:

Frequency = f = 40 Hz

Required:

Time period = T = ?

Formula:

$\sf T = 1 / f$

Solution:

T = 1 / 40

T = 0.025 seconds

$\rule[225]{225}{2}$

Hope this helped!

4 0

3 years ago

A 10.0-kg animal is running at a rate of 3.0 m/s. What is the kinetic energy of the animal?

Ilya [14]

Kinetic energy is calculated by using formula:

Ek = 1/2*m*v^2

Now we replace values of mass and speed in this formula.

Ek = 1/2*10*3^2 = 45.0J

When you have a formula and all variable values are given in the text of question just replace variable values in equation and find the final value.

4 0

3 years ago