All categories

3 years ago

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).

You might be interested in

Derive an equation Ta=1.44T1/2

ivann1987 [24]

Answer:

To derive an equation you must indicate the variable you want to solve for.
Here we have tension of an object A and Tension 1.
Two variables or unknown are given hence we cannot derive any other equations.

8 0

3 years ago

A well-insulated electric water heater warms 131 kg of water from 20.0°C to 51.0°C in 31.0 min. Find the resistance (in Ω) of it

Nookie1986 [14]

Answer:

Explanation:

Heat required to warm the water from 20 degree to 51 degree

= mct

= 131 x 4150 x ( 51 - 20 )

= 16853150 J

Power of heating element

= v² /R

Heat generated in 31 min

= (v² / r ) x 31 x 60 = 16853150

r = (240 x 240 x 31 x 60) / 16853150

6.35 ohm

In this case heat required will change so time will also change

Heat required =

131 x 4150 x ( 100-51 )

= 26638850 J

If time required be t hour

Energy consumed

Power x time

= (v² / r ) x t x 60 = 26638850

t = 26638850 x 6.35 / (240 x 240 x 60 )

= 48.95 h

Heat required to evaporate water at 100 degree

= mass x latent heat

= 131 x 2260000

= 296060000 J

Total heat required

= 296060000 + 26638850 + 16853150

= 339552000 J

time required = 339552000 x 6.35 / (240 x 240 x 60 )

= 623.88 h .

3 0

3 years ago

The _________ of a line is defined as its rise divided by its run.

Alexeev081 [22]

Answer:

This is the definition of slope.

Step-by-step explanation:

The formula for slope is:

m(slope) = (y2 - y1)/(x2 - x1)

This shows the difference in y, which is rise, divided by the different in x, or run.

3 0

4 years ago

Read 2 more answers

How many cubic feet are in 6,117 ounces

lesya692 [45]

6.388 or 6.388468 cubic feet..

not sure

4 0

3 years ago

What is the best explanation of work?

Margarita [4]

Answer:

Work done by the force acting on a body is defined as the product of force and displacement of the body in the direction of the force.  It is a scalar quantity. Force acting on the body must produce a displacement for the work is to be done by the force. Thus, for the work to be done, the following conditions must be fulfilled:

A force must be applied and the applied force must produce a displacement in any direction except perpendicular to the direction of the force.

Mathematically,

$work = force \times \: displacement$

( in the direction of force)

i.e W= F•D

The SI unit of force is Newton (N) and that of displacement of a metre (M). So the unit of work is Newton metre(Nm) which is joule (J).

Thus, one joule work is said to be done when one Newton force displaces a body through one metre in its own direction.

Hope this helps...

Good luck on your assignment..

3 0

3 years ago

Different between si unit and derived unit​

Different between si unit and derived unit