PHYSICS HIGH SCHOOL

If a cup of coffee is at 90°C and a person with a body temperature of 36'C touches it,how will heat flow between them​

Answers

Answer 1
Answer:

Answer:

the heat always transfers from high temperature to low temperature body without aid of any external energy to this law the heat transfers from cup of coffee to the person body until both bodies reaches to the equilibrium state    

Explanation:

Related Questions

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00 s. (a) How long is the truck in motion? (b) What is the average velocity of the truck for the motion described?
A Boy throws a pebble into the center of the pond. A floating leaf near the waters edge oscillates ( moves up and down ) two complete cycles in one second as water waves move past the leaf. The waters wavelength is 10 meters. What is the waves velocity?
Displacement vectors A, B, and C add up to a total of zero. Vector A has a magnitude of 1550 m and a direction of 25.6° north of east. Vector B has a direction of 41.0° east of south, and vector C has a direction of 35.1° north of west. Find the magnitudes of vector B and vector C.
An electromagnetic wave traveling through a vacuum has a wavelength of .15 meter. What is the period of this electromagnetic wave?
If the sun rises at 5 am and sets at 6 pm, what is the length of the day? a) 11 hours b) 12 hours c) 13 hours d) 24 hours

How are kyanite crystals formed

Answers

It occurs as detrital grains in sedimentary rocks. It forms under extreme pressure.

The angle between the two vectors A=3i^+4j^​+5k^ and B=3i^+4j^​−5k^ will be: a. 90 degree b. 0 degree . 60 degree d. 30 degree

Answers

Answer:

Both vectors have the same X and Y components therefore

the angle between the two vectors is zero

(B) is correct

A particle moves in a straight line with constant speed of 4 m/s for 2 s, then with 6 m/s for 3 s. The average speed of the particle in the given time interval be v. Find [v].(where, [ ] is step integer function)

Answers

Answer:

Explanation

Total time, T=2+3=5 s

Total distance, D=4×2+6×3=26 m

Thus, average speed=D/T=26/5=5.2

Thus, [x]=5

Which astronomer spent 20 years plotting the positions of the planets

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Answer

Tycho Brahe

Explanation

Tycho Brahe who was born on 1546. He was an astronomer.Tycho Brahe spent 20 years in plotting the positions of the planets and he was among those astronomers who helped in giving the  heliocentric model of the universe..
That was Tycho Brahe, and I thought it was actually more years than that.

Explain why dissolving is a physical change

Answers

It's a physical change because it is changing from one matter to another.
because the kinetic energy start to decrease, for example if we put sugar in a high temperature tea and we shake it what will happen to the sugar will the kinetic energy increase or decrease, it will probably decrease, just like us the people when we enter a cold room and we have a hot temp.

The mc002-1.jpgHrxn of formation of carbon dioxide is negative. Which statement is true?

Answers

When the formation of carbon dioxide is negative, it means that it releases heat to the surroundings. When it releases heat to the surroundings, the reaction is exothermic.
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