A. The average kinetic energy of their particles is the same.
Explanation:
The temperature of an object is proportional to the average kinetic energy of its particles, following the relationship:
where
is the average kinetic energy of the particles
k is the Boltzmann constant
T is the absolute temperature
From this relationship, therefore, we see that the average kinetic energy of the particles in a substance depends only on its temperature: therefore, since the two pieces of iron have same temperature, they also have same average kinetic energy.
Carbon2 hydrogen hydroxide oxygen V carbon dioxide 4 H2O three
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,
Also,
Combining both, We will get
Or, We can write it as,
Where, G is the constant of proportionality and it is called 'Universal Gravitational constant'.
☯️ Hence, derived !!
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Speed of Ferry is towards North with magnitude 6.2 m/s
Here if we assume that North direction is along Y axis and East is along X axis then we can say
Now a person walk on ferry with speed 1.5 m/s towards east with respect to Ferry
so it is given as
also by the concept of relative motion we know that
now plug in all values in it
now if we need to find the speed of the person then we need to find its magnitude
so it is given as