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Shashwat Singh 5 years ago
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Yogita Ingle 5 years ago
Yes magnitude of a physical quantity change with change in system of units.
If Length = 14 km. here magnitude is 14 and unit is km
As we know 1 km = 1000 m.If we change kilo meter to meter. then 14 km = 14000 m.
So here magnitude is 14000 and unit is meter. So if we change unit then magnitude also changes.
Posted by Shashwat Singh 5 years ago
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Yogita Ingle 5 years ago
A system of units in which derived units are obtained from a set of fundamental or base units by way of simple multiplication or division or both such that no numerical factors comes up is called coherent system of units, e.g., S.I.
Posted by Shashwat Singh 5 years ago
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Yogita Ingle 5 years ago
Astronomical unit is the average distance between the earth and the sun. It is near 1.5 x 1015 m Light year the distance traveled by light in one year. whereas 1 parsec is about 3.26 Light year
Posted by Shashwat Singh 5 years ago
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Yogita Ingle 5 years ago
One parsec is defined as the distance at which an arc of length one astronomical unit subtends an angle of one second of an arc .
1 parsec = 3.08 x 1016m.
Posted by Shashwat Singh 5 years ago
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Yogita Ingle 5 years ago
A light year is a measure of distance and not of time and is equal to the distance travelled by light in one year. It is equal to 9.461 x1012km.
Posted by Shashwat Singh 5 years ago
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Shashwat Singh 5 years ago
Yogita Ingle 5 years ago
Astronomical unit is the unit of length. It is the mean distance of the earth from the sun. 1 AU = 1.496 x 1011 m.
Posted by ᵐꜞᔆᔆ᭄ Qᴜᴇᴇɴ✿࿐꧂ : ꨄ︎•, 5 years ago
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Sia ? 4 years, 5 months ago
A quantitave estimation taken to analyze all of the requirements which must be fulfilled for any production process to take place. For instance, the requirements of the machine, the method of calculating the labor as well as the main method used to determine the standard costs are all known as the physical standards.
Posted by Har Har Mahadev 🙏 5 years ago
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Posted by Kajal Vishwakarma 5 years ago
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Yogita Ingle 5 years ago
If the initial velocity is doubled, Then the stopping distance become 4 times.
From the third equation,
{tex}v^2=u^2-2as{/tex}
{tex}u^2= v^2+2as{/tex}
From this equation distance (s) is directly proportional to u^2.
Posted by Vasuki Priya 5 years ago
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Yogita Ingle 5 years ago
A steradian is the SI unit of solid angle.It can be defined as the solid angle substended at a center of an unit, sphere by a unit area on its surface.For a general sphere of radius r, any portion on its surface with area A=
Vasuki Priya 5 years ago
Posted by Athmapriya P 5 years ago
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Gaurav Seth 5 years ago
Real World Examples Of Inelastic Collision
- The ball is dropped from a certain height and it is unable to rise to its original height.
- When soft mudball is thrown against the wall, will stick to the wall.
- The accident of two vehicles
- A car hitting a tree.
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Shashwat Singh 5 years ago
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Gaurav Seth 5 years ago
Speed after 25 s = 180 km/h = 180 ×(5/18) m/s = 50 m/s
From equation v = u + a t , we get acceleration. where v is final speed, u is initial speed which is zero because
the car strats from rest, a is acceleration and t is time taken to attain the final speed.
hence v = a t or 50 = a×25 or acceleration a = 50/25 = 2 m/s2 .
distance travelled, S = (1/2)a t2 = (1/2)×2×25×25 = 625 m
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