Which method is used to deliver heat in most central heating systems?

Physics

2 answers:

Wewaii [24]3 years ago

5 0

Theu use convection currents to blow the air aroubd the house

inessss [21]3 years ago

4 0

The right answer is B. hope this helps you :)

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A solid, uniform sphere of mass 2.0 kg and radius 1.7 m rolls without slipping down an inclined plane of height 5.3 m. what is t

inn [45]

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4 years ago

As the temperature increases the number of effective collisions between reacting particles in a chemical reaction

Reil [10]

Answer: option A) initially increases, then decreases.

Justification:

The increase of the rate of effective collisions among particles as the temperature increases is explained by the collision theory in virtue of the increase of the kinetic energy.

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8 0

3 years ago

Prove that.. please help

GaryK [48]

$\large{ \boxed{ \bf{ \color{red}{Universal \: law \: of \: gravitation}}}}$

Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them. The forces along the line joining the centre of the two objects.

❍ Let us consider two masses m1 and m2 line at a separation distance d. Let the force of attraction between the two objects be F.

According to universal law of gravitation,

$\large{ \longrightarrow{ \rm{F \propto m_1 m_2}}}$