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hysics, forces can be described by fields that mediate interactions between separate objects.

Later, Einstein and others attempted to construct a unified field THEORY in which electromagnetism and gravity WOULD emerge as different aspects of a SINGLE fundamental field.

Hope it helps..

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ong>Answer:

signal is an electromagnetic or electrical current that carries data from one system or network to another. In electronics, a signal is OFTEN a time-varying voltage that is also an electromagnetic wave carrying information, though it can take on other forms, such as current. There are two main types of signals used in electronics: analog and digital signals. This article discusses the corresponding characteristics, uses, advantages and disadvantages, and typical applications of analog vs. digital signals. Analog Signal An analog signal is time-varying and generally bound to a range (e.g. +12V to -12V), but there is an infinite number of values within that continuous range. An analog signal uses a given property of the medium to convey the signal’s information, such as electricity moving through a wire. In an electrical signal, the voltage, current, or frequency of the signal may be varied to represent the information. Analog signals are often calculated responses to changes in light, sound, temperature, position, pressure, or other physical phenomena. When plotted on a voltage vs. time graph, an analog signal should produce a smooth and continuous curve. There should not be any discrete value changes (see Figure 1).

Figure 1: Analog Signal

Digital Signal A digital signal is a signal that represents data as a sequence of discrete values. A digital signal can only take on one value from a finite set of possible values at a given time. With digital signals, the physical quantity representing the information can be many things:

Variable electric current or voltage

Phase or polarization of an electromagnetic field

Acoustic pressure

The magnetization of a magnetic storage media

Digital signals are used in all digital electronics, including computing equipment and data transmission devices. When plotted on a voltage vs. time graph, digital signals are one of two values, and are usually between 0V and VCC (usually 1.8V, 3.3V, or 5V) (see Figure 2).Analog Electronics Most of the fundamental electronic components — resistors, capacitors, inductors, diodes, transistors, and operational amplifiers (op amps) — are all inherently analog components. Circuits built with a combination of these components are analog circuits (see Figure 3).

Figure 3: Analog Circuit

Analog circuits can be complex designs with multiple components, or they can be simple, such as two resistors that form a voltage divider. In general, analog circuits are more difficult to design than digital circuits that accomplish the same TASK. It would take a designer who is familiar with analog circuits to design an analog radio RECEIVER, or an analog battery charger, since digital components have been adopted to simplify those designs. Analog circuits are usually more susceptible to noise, with “noise” being any small, undesired variations in voltage. Small changes in the voltage level of an analog signal can produce significant errors when being processed. Analog signals are commonly used in communication systems that convey voice, data, image, signal, or video information using a continuous signal. There are two basic kinds of analog transmission, which are both based on how they adapt data to combine an input signal with a carrier signal. The two techniques are amplitude modulation and frequency modulation. Amplitude modulation (AM) ADJUSTS the amplitude of the carrier signal. Frequency modulation (FM) adjusts the frequency of the carrier signal. Analog transmission may be achieved via many methods:

ong>Answer:

Turns into pink colour

a) List out the acids in the above table.

b) What is the nature of the solution which gives pink colour with Phenolphthalein

solution ?

C) List out the NEUTRAL solutions in the above table

d) Name the strongest acid and the strongest base among the GIVEN solutio

HELLO,

Here,

F - focal length

V - image distance

u - object distance

and also, I have no idea why there is height of the object mentioned as there is no USE in this SUM as far as my knowledge.

anyways have a great day!!!

: )

______________________________

a = 9.8 m/s

u = 10 m/s

v = 0 m/s

s = v²-u² / 2a

 = - 100 m²/s² / 19.6 m/s²

 = 5.10 m

ong>Answer:

A MATERIAL at a certain temperature does not have all of its particles at the same energy. ... Just because we can ASSIGN a single NUMBER to the temperature of an object that is in thermal equilibrium does not mean that EVERY ATOM of the material is moving with the same energy because of the nature of averaging.

Advertising helps a business to earn profits by enabling more people to KNOW about the products and services and thus resulting in more sales. The CONSUMERS on the other hand will never get to know about the products and services if they are not advertised.

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ong>Answer:

Mass of the BODY =10 kg

Initial velocity u=4 m/s

Final velocity v=8 m/s

Time t=2s

a) Momentum before force acts p

1

=m×u=10×4=40kg.m/s

b) Momentum after force acts p

2

=m×v=10×8=80kg.m/s

c) GAIN in momentum PER second =

2

40

=20kg.m/s

d) ACCELERATION a=

t

v−u

=

2

8−4

=2m/s

2

Force =m×a=10×2 =20N

rong>The WHITE powder of Plaster of Paris on mixing it with water changes to gypsum and sets in as a hard solid mass. DUE to this REASON Plaster of Paris should be stored in AIR tight container because air contains moisture this moisture can cause the setting of plaster of Paris into hard mass gypsum.

ong>Answer:

Not ANSWERED in this PART : 10

6. If Numerical aperture is

0.26, REFRACTIVE index is 1.5 and

core diameter is 100 pm, then

refractive index of cladding is

ong>Answer:

a) LAW of conservation of momentum .

EXPLANATION:

in the jet plane the jet plane move FORWARD and the GASES move out of NOZZLES go in backward direction. so they cancel the effect of each other.and momentum remains conserve.

:ᴛʜᴇ ʟᴀʀɢᴇsᴛ ᴡᴀᴛᴇʀ ʀᴇsᴇʀᴠᴏɪʀ ɪs ᴛʜᴇ ᴏᴄᴇᴀɴ ᴛʜᴀᴛ ᴄᴏɴᴛᴀɪɴs 97.3% ᴏғ ᴀʟʟ ᴡᴀᴛᴇʀ ᴏɴ ᴇᴀʀᴛʜ. ᴛʜᴇ ɴᴇxᴛ ʙɪɢɢᴇsᴛ ʀᴇsᴇʀᴠᴏɪʀ ᴏғ ᴡᴀᴛᴇʀ ᴀʀᴇ ɢʟᴀᴄɪᴇʀs ᴀɴᴅ ᴘᴏʟᴀʀ ɪᴄᴇ ᴛʜᴀᴛ ᴄᴏɴᴛᴀɪɴ ᴊᴜsᴛ ᴏᴠᴇʀ 2% ᴏғ ᴛʜᴇ ᴀᴠᴀɪʟᴀʙʟᴇ ᴡᴀᴛᴇʀ ᴀɴᴅ ɪs ғʀᴇsʜ ᴡᴀᴛᴇʀ. ʀᴇsᴇʀᴠᴏɪʀs, ʟᴀᴋᴇs, ᴘᴏɴᴅs, ʀɪᴠᴇʀs ᴀɴᴅ ᴄᴀɴᴀʟs ᴄᴏɴᴛᴀɪɴ 0.36 % ᴏғ ғʀᴇsʜ ᴡᴀᴛᴇʀ. ᴛʜᴜs ᴛʜᴇ ᴄᴏʀʀᴇᴄᴛ ᴀɴsᴡᴇʀ ɪs ᴏᴘᴛɪᴏɴ ᴄ.

Explanation:

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Its out of brain.

Explanation:

ABE ENGREJI KI AULAD GUJARATI NAHI AATI KYA?

I HOPE it will be HELP full for you

ong>Answer:

The harnessed NUCLEAR energy is RELEASED in nuclear reactions. In the case of nuclear FISSION, an ATOM divides into two or smaller or lighter atoms. ... Nuclear fusion occurs when two or more atoms join or fuse together to form a large or heavy atom.

Thank U tnx dene ke leye

ong>Answer

There is need of 3 MOLECULES of sulphuric acid to complete neutralization of two molecules of aluminum hydroxide

HOPE IT WILL HELP YOU ;-)

ਤਮਾ ਦੀ ਕਿਰਪਾ ਗੁਰਮੁੱਖਾਂ ਉੱਤੇ ਹੁੰਦੀ ਹੈ|

ong>ANSWER:

because TIME is INDEPENDENT and distance is depended. time GOES on if distance is not their but if distance is covered it is covered in certain time. that's why distance is taken on y axis while DISPLACEMENT on x axis

ong>Answer:

(i)in series,5ohm resistor will be hot.

Because in series connection current has only one path to flow.Since current and resistance are directly PROPORTIONAL to heat (H=I^RT) and current is constant in this case,so OBVIOUSLY heat depends on resistance.Since resistance is more for 5ohm,more heat will be developed on it.

(ii)In parallel,3ohm will be HOTTER than 5ohm.

This is because in parallel connection,current has many paths to flow.So obviously current will TAKE the path that has less resistance.(current can flow easily through a path that has less resistance,that's why)So it will flow through the 3ohm resistor.Again,as resistance , current and heat are directly proportional.More current means more heat.So 3ohm will be hot.

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D is the right REQUIRED answer of this QUESTION

en:

A body enters in the gravitational FIELD of the earth from external atmosphere.

To find:

Potential energy of the earth body system ?

Calculation:

LET mass of body be m and mass of earth be M, radius of earth be r and height be h :

So, body enters gravitational field of earth from infinity and comes to LIE at a height h from earth surface.

• So, the potential energy will be equal to the potential DIFFERENCE multiplied with the mass of the body.

So, FINAL answer is:

ong>Answer:

different...cause when U mix two matters...it became more then it was..so just LIKE that when u mix two reactants the PRODUCT weight BECOMES more..

ong>Answer:

When Sulphur BURNS in the PRESENCE of OXYGEN , it REACTS with oxygen and FORMS a Sulphur dioxide ,Which is Acidic in Nature.

ong>Explanation:

The positive IONS are called cations that is METALS and the NEGATIVE ions that are called ANIONS nonmetals

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When the MAGNESIUM metal burns it reacts with oxygen FOUND in the air to form Magnesium Oxide. ... After it burns, it forms a white powder of the magnesium oxide. Magnesium GIVES up two electrons to oxygen atoms to form this powdery PRODUCT. This is an exothermic reaction

ANSWER :- 1

Mass of salt = 50 g

Mass of water = 320 g

Mass of SOLUTION = 320 + 50

ㅤㅤㅤㅤ‎‎‎‎ㅤㅤㅤ= 370 g

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ

ㅤ‎‎‎‎ㅤㅤㅤ━━━━━━━━━━━━━━━━━━━━

Answer :- 2

• Boron, SILICON, germanium etc.

ㅤ‎‎‎‎ㅤㅤ━━━━━━━━━━━━━━━━━━━━━

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ

Answer :- 3

• Physical Change because no new SUBSTANCE is formed.

ㅤ‎‎‎‎ㅤㅤ━━━━━━━━━━━━━━━━━━━━━

ong>Answer:

In a single SLIT diffraction experiment, if the WIDTH of the slit is made double the original width, then the size of the central diffraction band reduces to half and the intensity of the central diffraction band increases up to FOUR TIMES.

2000

Explanation:

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15000 N

Explanation:

GIVEN: mass = m = 300kg

ACCELERATION = a = 50m/s2

therefore, force = F = ma

= 300 × 50

= 15000N

liquid FUELS I guess

please spare me if it's WRONG

ong>Answer:

i) (C) the car is MOVING with uniform acceleration

ii) (A) acceleration

iii) (C) parabola

iv) (A) displacement

tried my BEST to explain, hope its HELPFUL!

Explanation:

i) As it is velocity-time graph, it shows how velocity is changing with time. Acceleration is rate of change of velocity. As is a straight LINE, it is uniform acceleration.

ii) same explanation as (i)

iii) position-time graph gives us velocity. so according to this situation, velocity is changing uniformly. so, we GET a parabola for s-t graph

iv) area under velocity-time graph always gives us 'displacement' (velocity= displacement/ time)

ong>ANSWER:

mass----

1) mass NEVER can be zero.

2) mass does not change according to location.

weight-----

1) weight increase or decrease with higher or lower gravity.

2) weight VERIES according to location.

ong>Answer:

1(C). 10N

2(a) 0

3(a) tennis ball

4(b)INERTIA of the motion

5(b) UNBALANCED FORCE

DONT know

Explanation:

SRY... ND thx for points

ong>ANSWER:

multiple reflection is the principle behind working of KELEIDOSCOPE

ong>ANSWER:

c.The change in acceleration takes place over a LONG duration.

Explanation:

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3.3

Explanation:

Eeq=E1/2R1+E2/R2+E3/2R1

----------------------------------

1/2R1+1/R2+1/2R1

=2/2+4/2+4/2

-------------------

1/2+1/2+1/2

=5/3

-------

2

= 10

-------

3

=3.3

speed of SOUND is the DISTANCE travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,235 km/h; 1,125 ft/s; 767 mph; 667 kn), or a kilometre in 2.9 s or a mile in 4.7 ss

Welcome to BRAINLY Dude ;)

ong>Answer:

(i)To hear a distinct ECHO, the time INTERVAL between the original sound and the reflected one must be at least 0.1 s. (ii) For HEARING distinct echoes, the MINIMUM distance of the obstacie from the SOURCE of sound must be 17.2 m.

wjuehsnsiusb sjusvbsn snsusnsjhs NUB sjshbsj SORRY

ong>ANSWER:

spherical wave

Explanation:

Due to the large distance between SUN and earth, the spherical wave STARTING from sun will BECOME plane wave on earth surface

ong>Answer:

OPTION (C) is correct

10 NEWTON

I LOVE you too I will not SAY

ong>Answer:

A figure of speech is a word or phrase that possesses a separate meaning from its literal definition. It can be a METAPHOR or simile, designed to make a COMPARISON. It can be the repetition of alliteration or the exaggeration of hyperbole to PROVIDE a dramatic effect.

sufficient?? but AP ne bohut kam answer kia hein.. islie..

Youth is the time of life when one is young, and often means the time between childhood and adulthood (maturity). It is also defined as "the appearance, FRESHNESS, vigor, spirit, etc., CHARACTERISTIC of one who is young".