Explore topic-wise InterviewSolutions in Current Affairs.

ong>Answer:

friction force causes lot of LOSSES in general up keep and wear and TEAR of machinery so it CONSIDERED as a evil but almost all crucial task cannot be carried out without the presence of friction so it considered as a necessary evil of friction

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I THINK YOU ARE STUDYING GRADE 8 MY TEACHER COMPLETED THIS CHAPTER YESTERDAY IN ONLINE CLASS SO IT IS HELPFUL FOR YOU

ong>Answer:

The REFRACTIVE index of many MATERIALS (such as glass) varies with the WAVELENGTH or color of the light USED, a phenomenon known as dispersion. This causes light of different colors to be refracted differently and to leave the prism at different angles, CREATING an effect similar to a rainbow.

ong>Answer:

6.0555

Explanation:

options GLAT h ok fine

kutto mil GYA NA answer chli niklo dawfa ho JAAO

5m/s, INELASTIC COLLISION

I didn't KNOW the answer ☺️ SORRY

usrrusosruosrisr87krssriits0oidoousrdtr8o

acceleration

Explanation:

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ong>ANSWER:

Buoyancy is the force that causes objects to FLOAT. Buoyant Force is the UPWARD force exerted by a fluid that opposes the weight of an OBJECT

ong>Answer:

HEY MATE HERE'S YOUR ANSWER

Explanation:

It is either above or below the base line of the main SCALE, in which case the screw gauge is said to have a zero ERROR. It can be both positive and negative. It is accounted by subtracting the zero error (with sign) from the observed reading in order to get the correct reading.

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2.0555

Explanation:

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all is d CORRECT answer

ong>Answer:

Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in PARALLEL COMBINATION to the same battery, the electric power CONSUMED will be.

Explanation:

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this is very DIFFICULT QUESTION...

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ong>Answer:

First of all we have to WRITE the dimensional formula of JOULE. Let N1 be the number of joule and n2 be the number of erg. On dividing both sides by [M₂¹L₂²T₂⁻²].

Explanation:

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The pascal (SYMBOL: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ULTIMATE tensile strength. It is defined as one newton per square metre. It is named after the French polymath Blaise Pascal.....★彡

SORRY I can't UNDERSTAND this language sorry

0..........OBVIOUSLY there will be no FORCE

hkxhdhydud

Explanation:

vxhxhdgdgdg

The principal of thrusts in physics are unification and reduction. in unification, DIVERSE phenomena of nature are expressed in few terms of laws and concepts. for example,the law of gravitation. It explains FALLING of objects on earth,PLANETARY MOTION, motion of moon, etc.

Explanation:

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ong>ANSWER:

ANSWER

(a) To stretch the bow, the archer applies a FORCE that causes a change in its shape.

(b) The force applied by the archer to stretch the bow is an example of muscular force.

(c) The TYPE of force responsible for a change in the state of motion of the arrow is an example of a contact force..

(d) While the arrow moves towards its target, the forces acting on it are due to GRAVITY and that due to friction of air.

Line of sight (LoS) is a type of PROPAGATION that can transmit and RECEIVE data only where transmit and receive stations are in view of each other without any SORT of an obstacle between them. FM radio, microwave and SATELLITE transmission are EXAMPLES of line-of-sight communication..

ong>ANSWER:

the h

Explanation:

the HORIZONTAL axis will be UCOS THETA

SHM is extremely IMPORTANT for JEE. Although you won't be seeing direct questions from the chapter, the concepts taught will be useful in solving problems related to ELECTROSTATICS, gravitation, rotational mechanics ETC,.

ᴘʀɪɴᴄɪᴘʟᴇ ᴏғ ʜᴏᴍᴏɢᴇɴᴇɪᴛʏ sᴛᴀᴛᴇs ᴛʜᴀᴛ ᴅɪᴍᴇɴsɪᴏɴs ᴏғ ᴇᴀᴄʜ ᴏғ ᴛʜᴇ ᴛᴇʀᴍs ᴏғ ᴀ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴇϙᴜᴀᴛɪᴏɴ ᴏɴ ʙᴏᴛʜ sɪᴅᴇs sʜᴏᴜʟᴅ ʙᴇ ᴛʜᴇ sᴀᴍᴇ. ᴛʜɪs ᴘʀɪɴᴄɪᴘʟᴇ ɪs ʜᴇʟᴘғᴜʟ ʙᴇᴄᴀᴜsᴇ ɪᴛ ʜᴇʟᴘs ᴜs ᴄᴏɴᴠᴇʀᴛ ᴛʜᴇ ᴜɴɪᴛs ғʀᴏᴍ ᴏɴᴇ ғᴏʀᴍ ᴛᴏ ᴀɴᴏᴛʜᴇʀ

ᴀᴘᴘʟɪᴄᴀᴛɪᴏɴs ᴏғ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴀɴᴀʟʏsɪs

ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴀɴᴀʟʏsɪs ɪs ᴀ ғᴜɴᴅᴀᴍᴇɴᴛᴀʟ ᴀsᴘᴇᴄᴛ ᴏғ ᴍᴇᴀsᴜʀᴇᴍᴇɴᴛ ᴀɴᴅ ɪs ᴀᴘᴘʟɪᴇᴅ ɪɴ ʀᴇᴀʟ-ʟɪғᴇ ᴘʜʏsɪᴄs. ᴡᴇ ᴍᴀᴋᴇ ᴜsᴇ ᴏғ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴀɴᴀʟʏsɪs ғᴏʀ ᴛʜʀᴇᴇ ᴘʀᴏᴍɪɴᴇɴᴛ ʀᴇᴀsᴏɴs:

ᴛᴏ ᴄʜᴇᴄᴋ ᴛʜᴇ ᴄᴏɴsɪsᴛᴇɴᴄʏ ᴏғ ᴀ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴇϙᴜᴀᴛɪᴏɴ

ᴛᴏ ᴅᴇʀɪᴠᴇ ᴛʜᴇ ʀᴇʟᴀᴛɪᴏɴ ʙᴇᴛᴡᴇᴇɴ ᴘʜʏsɪᴄᴀʟ ϙᴜᴀɴᴛɪᴛɪᴇs ɪɴ ᴘʜʏsɪᴄᴀʟ ᴘʜᴇɴᴏᴍᴇɴᴀ

ᴛᴏ ᴄʜᴀɴɢᴇ ᴜɴɪᴛs ғʀᴏᴍ ᴏɴᴇ sʏsᴛᴇᴍ ᴛᴏ ᴀɴᴏᴛʜᴇʀ

ʟɪᴍɪᴛᴀᴛɪᴏɴs ᴏғ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴀɴᴀʟʏsɪs

sᴏᴍᴇ ʟɪᴍɪᴛᴀᴛɪᴏɴs ᴏғ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴀɴᴀʟʏsɪs ᴀʀᴇ:

ɪᴛ ᴅᴏᴇsɴ’ᴛ ɢɪᴠᴇ ɪɴғᴏʀᴍᴀᴛɪᴏɴ ᴀʙᴏᴜᴛ ᴛʜᴇ ᴅɪᴍᴇɴsɪᴏɴᴀʟ ᴄᴏɴsᴛᴀɴᴛ.

ᴛʜᴇ ғᴏʀᴍᴜʟᴀ ᴄᴏɴᴛᴀɪɴɪɴɢ ᴛʀɪɢᴏɴᴏᴍᴇᴛʀɪᴄ ғᴜɴᴄᴛɪᴏɴ, ᴇxᴘᴏɴᴇɴᴛɪᴀʟ ғᴜɴᴄᴛɪᴏɴs, ʟᴏɢᴀʀɪᴛʜᴍɪᴄ ғᴜɴᴄᴛɪᴏɴ, ᴇᴛᴄ. ᴄᴀɴɴᴏᴛ ʙᴇ ᴅᴇʀɪᴠᴇᴅ.

ɪᴛ ɢɪᴠᴇs ɴᴏ ɪɴғᴏʀᴍᴀᴛɪᴏɴ ᴀʙᴏᴜᴛ ᴡʜᴇᴛʜᴇʀ ᴀ ᴘʜʏsɪᴄᴀʟ ϙᴜᴀɴᴛɪᴛʏ ɪs ᴀ sᴄᴀʟᴀʀ ᴏʀ ᴠᴇᴄᴛᴏʀ.

ong>ANSWER:

MICRO WAVE ,. Y RAYS , X RAYS .....

ong>Answer:

1/Rp = 1/1 + 1/2 + 1/3

LCM = 6

1/Rp = (6 + 3 + 2) / 6

1/Rp = 11/6

Rp = 6/11

Rp = 0.54 ohm

Therefore, combined resistance is 0.54 ohm.

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ong>Answer:

Curves 1 and 2 correspond to SIMILAR materials while curves and 4 REPRESENT different materials, since the value of stopping potential for 1,2 and 3, 4 are the same,For the given frequency of the incident radiation, the stopping potential is independent of its intensity

So, the pairs of curves (1 and 3) and (2 and 4) correspond to different materials but same intensity of incident radiations.

acceleration due to gravity does not depend on the MASS of the object.

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जब अमोनिया और क्लोरीन की अधिकता होती है, तो नाइट्रोजन और अमोनियम क्लोराइड बनते हैं।

आशा है कि यह उत्तर आपकी मदद करेगा।

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Rotation around a fixed axis or about a fixed axis of revolution or MOTION with respect to a fixed axis of rotation is a special CASE of rotational motion.

Explanation:

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ong>Answer:

Before we get into finding series solutions to differential equations we need to determine when we can find series solutions to differential equations. So, let’s start with the differential equation,

p(x)y″+q(x)y′+r(x)y=0

This time we really do mean nonconstant coefficients. To this point we’ve only dealt with constant coefficients. However, with series solutions we can now have nonconstant coefficient differential equations. Also, in order to make the problems a little nicer we will be dealing only with polynomial coefficients.

Now, we say that x=x_{0} is an ordinary point if provided both

\frac{{q\left( x \right)}}{{p\left( x \right)}}\,\,\hspace{0.25in}{\mbox{and}}\hspace{0.25in}\frac{{r\left( x \right)}}{{p\left( x \right)}}

are analytic at x=x_{0}. That is to say that these two quantities have TAYLOR series AROUND x=x_{0}. We are going to be only dealing with coefficients that are polynomials so this will be equivalent to saying that

p\left( {{x_0}} \right) \ne 0

for most of the problems.

If a point is not an ordinary point we call it a singular point.

The basic idea to finding a series solution to a differential equation is to assume that we can write the solution as a power series in the form,

\begin{equation}y\left( x \right) = \sum\limits_{n = 0}^\INFTY {{a_n}{{\left( {x - {x_0}} \right)}^n}} \label{eq:eq2}\end{equation}

and then TRY to determine what the a_{n}’s need to be. We will only be ABLE to do this if the point x=x_{0}, is an ordinary point. We will usually say that \eqref{eq:eq2} is a series solution around x=x_{0}.

Let’s start with a very basic example of this. In fact, it will be so basic that we will have constant coefficients. This will allow us to check that we get the correct solution.

ong>Explanation:

Let us consider a ball projected at an angle θ with respect to horizontal x-axis with the INITIAL velocity u .

The point O is called the point of projection, θ is the angle of projection and OB = horizontal range. The total time TAKEN by the particle from reaching O to B is called the time of flight.

Now,

(a). The total time of flight is

Resultant displacement is zero in Vertical direction.

Therefore, by using equation of motion

s=ut−

2

1

GT

2

gt=2sinθ

t=

g

2sinθ

(b). The horizontal range is

Horizontal range OA = horizontal component of velocity × total flight time

R=ucosθ×

g

2usinθ

R=

g

u

2

sin2θ

(c). The maximum height is

It is the highest point of the trajectory point A. When the ball is at point A, the vertical component of the velocity will be zero.

By using equation of motion

v

2

=u

2

−2as

0=u

2

sin

2

θ−2gH

H=

2g

u

2

sin

2

θ

Hence, this is the REQUIRED solution

ong>Answer:

R=P=[P2+Q2+2PQcosθ]1/2

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0Q+2Pcosθ=0......{1}

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0Q+2Pcosθ=0......{1}LET the angle between resultant of 2P and Q be α

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0Q+2Pcosθ=0......{1}let the angle between resultant of 2P and Q be αtanα=Q+2Pcosθ2Psinθ

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0Q+2Pcosθ=0......{1}let the angle between resultant of 2P and Q be αtanα=Q+2Pcosθ2Psinθfrom EQUATION 1

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0Q+2Pcosθ=0......{1}let the angle between resultant of 2P and Q be αtanα=Q+2Pcosθ2Psinθfrom equation 1tanα=∞→α=90

R=P=[P2+Q2+2PQcosθ]1/2Q2+2PQcosθ=0Q+2Pcosθ=0......{1}let the angle between resultant of 2P and Q be αtanα=Q+2Pcosθ2Psinθfrom equation 1tanα=∞→α=90

ELECTROMAGNETIC FORCE

ong>ANSWER:

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1/R= 1/R1+1/R2+1/r3+1/r4

1/R=1/1+1/4+1/16+1/64

1/R= 1+0.25+0.625+0.152

1/R=1/ 1.3277

1/R=1.3277ohms

ong>ANSWER:

I don't understand the QUESTION

EXPLANATION:

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25m/sec

Explanation:

Given

DISTANCE =100m

TIME =4sec

Average SPEED =Distance /Time

=100/4

=25m/sec

ong>Answer:

N

2

(g)+O

2

(g)⟶2NO(g)+heat

Initially 5 7 0

at EQUILIBRIUM 5−0.1 7−0.1 0.1

So,

K

C

=

[N

2

][O

2

]

2

[NO]

2

⇒K

C

=

(5−0.1)(7−0.1)

2

[0.1]

2

⇒K

C

=4.28 mol/L

Total VOLUME is 1.5L.

SINCE it's travelling in the same direction for the entire duration of its journey, the total displacement of the car is simply the distance from the starting point.

In the first part of its journey, the car travelled for 35 minutes at a speed of 85 km/h. Convert the time from minutes to hours to get

35

min

⋅

1 h

60

min

=

0.5833 h

This means that the car covered

0.5833

h

⋅

85 km

1

h

=

49.6 km

The car stops, then continues along its current direction, COVERING 130 km in 2 hours. The total displacement of the car will THUS be

d

total

=

49.6

+

130

=

179.6 km

The average velocity is simply the total dispalcement divided by the total time of travel. In your case, the total time will be

t

total

=

0.5833 h

+

0.25 h



= 15 min

+

2 h

=

2.833 h

The average velocity is

¯

v

=

179.6 km

2.833 h

=

63.4 km/h

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not know

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Explanation:

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Explanation:

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ong>ANSWER:

EARTH

Explanation:

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ong>Answer:

sinA = AC/CB

1/2 =45/CB

CB = 90

average speed = TOTAL distance/ time TAKEN

AV = 90/7

average speed = 12.85 m/s

ight-angled prism is a better reflector because light incident on its HYPOTENUSE is TOTALLY REFLECTED, without absorption of light. On the other hand, in case of a PLANE mirror, there is a possibility of partial absorption of light.

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k.e. = 1/2mv^2

density = mass/volume

mass = density×volume or d×v

velocity = a/t where a is acceleration and TIME is t

so KE = 1/2×d×v×v/t