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lora16 [44]
3 years ago
15

Different between si unit and derived unit​

Physics
1 answer:
Anastaziya [24]3 years ago
6 0

Answer:

There are seven base SI units corresponding to different parameters and are considered independent of each other. Derived units are derived from these 7 base units. Derived units are dependent on the base units and are not independent of each other. For example, let us derive the SI units for force. By Newtons Second Law of Motion, the force is same as the product of mass and acceleration of a body. that is, force = mass x acceleration. Also, acceleration is defined as the rate of change of velocity. And velocity is defined as the rate of change of displacement. Thus, force = mass x acceleration = mass x dv/dt = mass x dt2 Mass has SI units of kg, distance is measured in m and t has the SI unit of second. Thus, Sl unit of force is kg.m/s^2 (also known as Newton).

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A 20.0 kg suitcase is raised 3.0 m above a platform. How much work is done on the suitcase?
Lisa [10]

Answer:

600

Explanation:

m=20

g=10m\s2

h=3m

we have

w=m*g*h

=20*10*3

=600joule

3 0
4 years ago
You throw a tennis ball straight up (neglect air resistance). It takes 7.0 seconds to go up and then return to your hand. How fa
sattari [20]

Answer:

Velocity of throwing = 34.335 m/s

Explanation:

Time taken by the tennis ball to reach maximum height, t = 0.5 x 7 = 3.5 seconds.

Let the initial velocity be u, we have acceleration due to gravity, a = -9.81 m/s² and final velocity = 0 m/s

Equation of motion result we have v = u + at

Substituting

             0 = u - 9.81 x 3.5

             u = 34.335 m/s

Velocity of throwing = 34.335 m/s

6 0
4 years ago
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strojnjashka [21]
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7 0
3 years ago
In a Young's double-slit experiment, a set of parallel slits with a separation of 0.114 mm is illuminated by light having a wave
elena-14-01-66 [18.8K]

Answer:

a) 2232nm

b) 2511nm

Explanation:

a) To find the path difference Δl you use the following formula:

\Delta l=m\lambda

m: order of a bright fringe

λ: wavelength of light = 558nm

for m=4:

\Delta l=(4)(558nm)=2232nm

b) The path difference for the case of destructive interference you have:

\Delta l=(m+\frac{1}{2})\lambda

m: order of a dark fringe

for m=4:

\Delta l=(4+\frac{1}{2})(558nm)=2511nm

7 0
3 years ago
Who is isac newten.gggggggg
dezoksy [38]

Answer:

mathematician, physicist, astronomer, theologian and author.

Explanation:

Greatest mathematician and the most influential scientist of all time.

5 0
3 years ago
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