STANDARD TIME

Question 1

What are the two required aspect for standard time?

Answer 1

The two required aspect of standard time are:

1. It is required to know the time of the day so that the event of the day will be ordered in sequence.

2.Itis also required to know what time or period an event has lasted

Question 2

What are the phenomenon For a substance that can measure time?

Answer 2

1. Any phenomenon that repeat itself in a regular periodic Pattern can be used to measure time.
2. The measurements consists of counting and recitations as time proceeds.

Question 3

What are the examples of systems that repeat itself with time in a regular fashion?

Answer 3

1. Oscillations of simple pendulums(used the in making of pendulum walled clock)
2. Rotation of earth on its axis (one complete rotation gives a day)1/86400 of a mean polar day.
3. Oscillation of coiled spring (used in making mechanical watches)
4. Oscillation of quartz crystal(used in making most electronics watches)

Question 4

unit for length

Answer 4

Meter

Question 4

What are the reasons behind the slightly period of rotation of earth time to time?

Answer 4

1. Total friction between water and land.
2. Motion of the winds
   3.Melting of ice located in the pole
3. Shifting. Earth’s plates

Question 4

What is the standard unit for mass?

Answer 4

Kilogram

Question 4

centi gives?

Answer 4

10^-2

Question 4

units for time

Answer 4

seconds

Question 4

milli gives ?

Answer 4

10^-3

Question 4

Pico gives

Answer 4

10^-12

Question 4

deci gives?

Answer 4

10^-1

Question 5

Nano gives?

Answer 5

10^-9

Question 5

Fanto

Answer 5

10^-15

Question 5

atto

Answer 5

10^-18

Question 5

S.i unit of force?

C.G.S unit of force?

Answer 5

Newton

Dyne

Question 5

The relations between Newton and Dyne is

Answer 5

1N = 10^5 Dyne.

Question 5

S.i unit of Momentum is

Answer 5

Newton second

Question 5

micro gives?

Answer 5

10^-6

Question 5

The CGS unit of Momentum is

Answer 5

Dyne second

Question 5

three fundamental quantities are

Answer 5

mass, length and Time
MLT

Question 5

Relation between NS and DS

Answer 5

1NS = 10^5DS

Question 5

S.I unit and CGS unit of energy is?

Answer 5

Joules and erg respectively

Question 5

The relations between Joules and Erg is...

Answer 5

1J = 10^7Erg

Question 5

The SI and CGS unit of power is

Answer 5

Watt/js^-1 and Erg/s-1

Question 5

Relations between Js^-1 and Erg/s^-1

Answer 5

1JS^-1=10^7Erg/S^~1

Question 6

1Wt is

Answer 6

10^7Erg

Question 6

Dimensionless quantities includes

Answer 6

angle,specific gravity, refractive index, velocity ratio, mechanical advantage, relative permeability, dielectric constant, coefficient of expansivity and tesile strain