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B.. INCREASES

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ong>Answer:

Let the heat produced be H, the current through the wire be I, the resistnce be R and the TIME be t.

H=i^2RT

Explanation:

The heat produced in conducting wire is given by joules law as,

H=I^2RT

i ) The amount of heat produced in current conducting wire, is proportional to the square of the amount of current that is FLOWING through the CIRCUIT, when the electrical resistance of the wire and the time of current FLOW is constant.

ie H∝I

2

(when R, t are constant)

II) Heat generated due to the flow of current is proportional to the time of current flow, when the electrical resistance and amount of current flow is constant.

ie H∝t (when I,R are constant)

III) The amount of heat produced is proportional to the electrical resistance of the wire when the current in the circuit and the time of current flow is constant.

ie H∝R (when I, t are constant)

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ƦƊƖƠƓƦƛƤӇƳ ƖƧ an INSTRUMENT for RECORDING HEART MUSCLE ACTIVITY, such as an electrocardiograph.

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a PARTICLE covers one fourth of its DISTANCE with speed v and remaining three fourth with speed 2v. the average speed of particle is:1.8/5v,2.3/2v,3.4/3v,4.7/5v.

Explanation:

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ong>Answer:

GRADUATED cylinder

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ong>Answer:

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Explanation:

SPEED 1 = 30km/hr             ------1

speed 2 = 50km/hr            ------2  

time 1 = 15 mins                  -------1

time 2 =30 mins                 -------2

now first we CONVERT mins to hr

time 1 = 15 mins =0.25hr

and time 2 = 30 mins = 0.5 hr

now we CALCULATE the distance i.e

speed1 = distance1 / time1  ------3

speed 2 = distance 2 / time 2    -------4

therefore  distance in the 3rd and 4th cases will be 7.5km and 25 km respectively

now we calculate the average speed which is

average speed = TOTAL distance travelled / total time taken

therefore, total distance =7.5 km +25km=32.5km

and total time = 0.25+0.5=0.75hr

average speed = 32.5/0.75 = 43.3333km/hr

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ABCD FIND answerhih7ohyivyiv8y

THIS IS THE CORRECT ANS .

Explanation:

100% correct ans. OKK

1000×10/4= 250 ×10×0.3=30×25=750Pa

EMERGENT is the answer to your QUESTION

ong>Answer:

VOLUME of cube = Volume of the cuboid

a

3

=100×80×64

a

3

=512000

a=80 CM

Surface area = 6A

2

=38400 cm

2

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PARTICLE is moving along the x-axis with its cordinate with time 't' given by

. Another particle is moving along the y-axis with its coordinate as a FIGUREunction oFIGURE time given by y(t)=

At t=1 s, the speed oFIGURE the4 second particle as measured in the FIGURErame oFIGURE the FIGUREirst particle is given as

. Then V (in m//s)

ong>Answer:

partly purified copper with a blistered surface formed during smelting.

Explanation:

BLISTER copper is refined by stirring MOLTEN impure metal with green logs of WOOD because such a wood LIBERATE hydrocarbon GASES (like CH4).

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ong>ANSWER:

the OPPOSING force WORKING on an body when any other force is applied

en:

A bar magnet having magnetic length 10cm and POLE strength 7.5 Am.

To FIND:

Magnitude of magnetic field at a DISTANCE of 10 cm from magnet.

Calculation:

General EXPRESSION for magnetic field intensity on the AXIS of a magnetic dipole is given as:

Putting available values in SI unit:

So, final answer is:

In CLASSICAL electromagnetism, magnetization or magnetic POLARIZATION is the vector field that expresses the density of PERMANENT or induced magnetic dipole moments in a magnetic material. ... Net magnetization results from the RESPONSE of a material to an external magnetic field.

rong><U>Answer :

➥ The Speed acquired by a bus = 12 m/s

➥ The Distance TRAVELLED by a bus = 720 m

Given :

➤ Intial velocity of a bus = 0 m/s

➤ Acceleration of a bus = 0.1 m/s²

➤ Time required by the bus = 2 min

To Find :

➤ Speed required by a bus = ?

➤ Distance travelled by a bus = ?

Required Solution :

According to the given question given that Initial velocity of a bus is 0 m/s because the bus STARTING from rest, acceleration is 0.1 m/s² and Time taken by a bus is 2 min.

✒ To find the Speed acuired by a bus and Distance travelled by a bus, first we need to convert the time taken by a bus, minute into second, after that we will find the Speed acuiredquired by a bus and Distance travelled by a bus.

◈ Time taken = 2 min

→ Time taken = 2 × 60

→ Time taken = 120 sec

Now, we have Intial velocity, Acceleration, and Time taken by a bus.

• Intial velocity of a bus = 0 m/s
• Acceleration of a bus = 0.1 m/s²
• Time taken by a bus = 120 sec

We can find Final velocity of a bus by using the first equation of motion which says v = u + at.

Here,

• v is the Final velocity in m/s.
• u is the Intial velocity in m/s.
• a is the Acceleration in m/s².
• t is the Time taken in second.

✎ So let's calculate Final velocity (v) !

⇛ v = u + at

⇛ v = 0 + 0.1 × 120

⇛ v = 0 + 12

⇛ v = 12 m/s

║Hence, Speed acquired by a bus is 12 m/s.║

We can find Distance travelled by a bus by using the second equation of motion which says s = ut + ½ at².

Here,

• s is the distance in m.
• u is the Intial velocity in m/s.
• t is the Time taken in second.
• a is the acceleration in m/s².

✎ So let's find Distance travelled (s) !

⇛ s = ut + ½ at²

⇛ s = 0 × 120 + ½ × 0.1 × 120²

⇛ s = 0 + ½ × 0.1 × 120²

⇛ s = 0 + ½ × 0.1 × 14400

⇛ s = 0 + 1 × 0.1 × 7200

⇛ s = 0 + 1 × 720

⇛ s = 0 + 720

⇛ s = 720 m

║Hence, the Distance travelled by bus is 720 m.║

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ong>ANSWER:

post this in hindi or english

Explanation:

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weight of an object on moon is EQUAL to 1/6th of weight of object on EARTH

ong>Answer:

.[5] PHYSICS is one of the most fundamental SCIENTIFIC disciplines, and its main goal is to UNDERSTAND how the universe BEHAVES.

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er:R = mgcos theta--------- e.g. 2. where mu = COEFFICIENT of limiting friction. This is EQUAL to the tangent of the ANGLE of repose between TWO surfaces in contact.

Explanation:

here force is required

COEFFICIENT of friction=F/W

or F= Coefficient of friction × weight

since W=mass×gravity cos theeta

now F= 5×9.8 cos 37

ans: 39N

not UNDERSTAND ur question

its gravitational force is ACTION but what REACTION

ong>EXPLANATION:

Reflection, ABRUPT change in the direction of propagation of a wave that strikes the boundary between different mediums. At LEAST part of the ONCOMING wave disturbance remains in the same medium. Regular reflection, which FOLLOWS a simple law, occurs at plane boundaries.

Two main types of reflection are often referred to – reflection-in-action and reflection-on-action. The most obvious difference is in terms of when they happen

ong>Answer:

A constitution is an aggregate of fundamental PRINCIPLES or established precedents that constitute the legal basis of a POLITY, ORGANISATION or other type of ENTITY and COMMONLY determine how that entity is to be governed

D) at the focus

Explanation:

sun(object) is at infinity . WHENEVER the object is at infinity the image will be formed at the focus in a concave MIRROR.

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what is this???????????????????????

• gvsxbnvhhnninbfhhsf bbjbsxxfcedkmva theuhcxh HABIT

ong>ANSWER:

f(X)= E^xsinx

derivative of f(X) is

d/dx (uv) = u d/dx(V)+V d/dx (u)

e ^x d/dx (SINX) + sinx d/dx (e^x)

e^xcosx+sinxe^x

e^x(cosx+sinx)

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ong>Answer:

The RATE of change - ROC - is the speed at which a variable changes over a specific period of time. ROC is often used when speaking about momentum, and it can generally be expressed as a ratio between a change in one variable relative to a corresponding change in another; GRAPHICALLY, the rate of change is represented by the slope of a line. The ROC is often illustrated by the Greek letter delta.

Rate of change is used to mathematically describe the percentage change in value over a defined period of time, and it represents the momentum of a variable. The calculation for ROC is simple in that it TAKES the current value of a stock or index and divides it by the value from an earlier period. Subtract one and MULTIPLY the resulting number by 100 to give it a percentage representation.

Rate of change is an extremely important financial concept because it allows investors to spot security momentum and other trends. For example, a security with high momentum, or one that has a positive ROC, normally OUTPERFORMS the market in the short term. Conversely, a security that has a ROC that falls below its moving average, or one that has a low or negative ROC is likely to decline in value and can be seen as a sell signal to investors.

Rate of change is also a good indicator of market bubbles. Even though momentum is good and traders look for securities with a positive ROC, if a broad-market ETF, index, or mutual fund has a sharp increase in its ROC in the short term, it may be a sign that the market is unsustainable. If the ROC of an index or other broad-market security is over 50%, investors should be wary of a bubble.

All non-zero digits are considered SIGNIFICANT. For example, 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4, and 5). ZEROS appearing between two non-zero digits (trapped zeros) are significant. Example: 101.12 has five significant figures: 1, 0, 1, 1, and 2.

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× p×g

P = 2×1000×10

P =20000 PA

MIGHT be ture

Explanation:

ong>Answer:

WHENEVER two electrons are paired TOGETHER in an orbital, or their total spin is 0, they are diamagnetic electrons. Atoms with all diamagnetic electrons are called diamagnetic atoms. A PARAMAGNETIC electron is an unpaired electron. An atom is considered paramagnetic if EVEN one orbital has a net spin.

ong>Answer:

First law

In an inertial frame of reference, an object EITHER remains at rest or CONTINUES to move at a constant VELOCITY, UNLESS acted upon by a force.

Second law

In an inertial frame of reference, the vector sum of the forces F on an object is EQUAL to the mass m of that object multiplied by the acceleration a of the object: F = ma

ong>EXPLANATION:

The centripetal force, the ACTION, is balanced by a reaction force, the centrifugal ( center-fleeing ) force. The two forces are EQUAL in magnitude and opposite in direction. The centrifugal force does not act on the body in motion; the only force ACTING on the body in motion is the centripetal force.

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R1 is the first angle of refraction FORMED when the ray enters the first surface and R2 is the SECOND angle of refraction formed when the ray strikes the second surface of prism.

Explanation:

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ong>Answer:

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e molecular FORCE of ATTRACTION is STRONGEST in SOLIDS ,more energy is REQUIRED to break this force of attraction.

ong>Answer:

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hmm.... question is SIMPLE u just NEED to read it carefully..... hope this ll HELP uu

ong>Answer:

Answer:

it takes the same AMOUNT of time which  is 10s (if AIR resistance is negligible)

Explanation:

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Explanation: