Explore topic-wise InterviewSolutions in Current Affairs.

ong>ANSWER:

HI everyone I have to MUCH WORK so bye

ACCELERATION DUE to gravity does not depend on the MASS of the object

ong>Answer:

true.

The World Health ORGANIZATION (WHO) in 1997 declared obesity as a major public health problem and a global epidemic. In general, a body mass index of 25 kg/m2 or greater is considered overweight and 30 kg/m2 or greater is considered OBESE.

ong>Answer:

Toppr

Question

A total charge Q is DISTRIBUTED uniformly into a spherical volume of radius R . Find the electrostatic energy of this configuration.

Answer · 2 votes

Given a total charge Q is distributed uniformly into a spherical volume of radius R . We have to find the electrostatic energy of this configuration.For this we use the formula, the electrostatic energy Vo = INT ε02E^2dl where, ε 0 = permeability of free space E = electric field dl = Volume element For this the electric field can be easily found from GAUSS' Theorem to be, E = Q4piε0 × rR^3 & (rR) The TWO intergrals needed are: int0^R (rR^3)^2 4pi r^2dr = 4pi5R intR^∞ (1r^2)^2 4pi r^2dr = 4piR So, we obtain Vo = int0^∞ ε02E^2 4pi r^2dr [dτ = 4pi r^2dr] So, Vo = ε02 (Q4piε0)^2 ( 4pi5R + 4piR ) Vo = 35 14piε0 Q^2R = 320 Q^2piε0R

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ong>Answer:

Sputnik 1

(/ˈspʌtnɪk, ˈspʊtnɪk/; "Satellite-1", or "PS-1", Простейший Спутник-1 or Prosteyshiy Sputnik-1, "Elementary Satellite-1")[5] was the first artificial Earth satellite.[6] It was LAUNCHED into an elliptical LOW Earth orbit by the USSR on 4 October 1957 as PART of the Soviet space program. It orbited for three weeks before its batteries died and then orbited silently for TWO months before it fell back into the atmosphere on the 4th January 1958.

ong>Answer:

A is the CORRECT I THINK so not sure

SORRY

Explanation:

I don't UNDERSTAND what you want

SO sorry

ong>Answer:

A MICROSECOND is equal to 1000 nanoseconds or 10^-6 SECONDS

ong>ANSWER:

Option 3 all objects.

Explanation:

HOPE IT HELPS YOU. HAVE A NICE DAY.

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• m = 8kg
• r = 10cm = 0.1
• ω = 5r/s
• τ = 0.01Nm
• t = 10 sec

• Change in ANGULAR momentum
• Change in Kinetic energy

▪I = MOMENT of Inertia

I = 1/2 mr²

I = 1/2 × 8 × (0.1)²

I = 4 × 0.01

▪ Angular acceleration, ɑ = τ/l

ɑ = 0.01 / 0.04

Final anglular velocity,

ω2 = ω1 + ɑt

ω2 = 5 + 0.25 × 10

ω2 = 5 + 2.5

_____________________________

→ So, change in Angular momentum,

dL = L2 - L1

dL = I ( ω2 - ω1 )

dL = MR²/2 ( ω2 - ω1 )

dL = 8 × 0.1² / 2 ( 7.5 - 5 )

dL = 8 × 0.1² / 2 ( 2.5 )

dL = 8 × 0.01 /2 ( 2.5 )

dL = 0.008 /2 × 2.5

dL = 0.04 × 2.5

→ So, change in Kinetic energy,

KE = KE2 - KE1

= 1/2 Iω2² - 1/2 Iω1²

= 1/2 I (ω2² - ω1² )

= MR²/2×2 (ω2² - ω1² )

= 8 × 0.1²/4 ( 7.5² - 5² )

= 8 × 0.001 / 4 ( 56.25 - 25 )

= 0.02 × 31.25

SHORT Distance RUNNING

)=limh→0f(X+H)−f(x)h. f'(x)=limh →0(x+h)2−x2h. f'(x)=limh→0x 2+2xh+h2− (x2)h. f'(x)= limh→0h (2X+h)h. f'(x)=limh→0(2x+h). f'(x)=2x.

the resistance=5×3=15 OHM

ong>ANSWER:

The Milky Way's bulge — a bulbous, 10,000 light-year-wide region of stars and dust POPPING out of the galaxy's spiral DISC — is thought to CONTAIN some of the oldest stars in the galaxy.

ong>Answer:

ANWER IN THE PIC

I HOPE IT HELP U

PLS MARK ME BRAINLIST

Momentum = Force x Velcoity

This is the PHYSICAL quantity

Explanation:

ong>Answer:

acceleration=1.6 MILES PER SECOND ²

n,

• radius of curvature,

• distance between the rails,

• speed of the train,

LET

There would be no SIDE pressure against the rails when the train moves along the rail with MAXIMUM SAFE speed, which is given by,

Then the ANGLE of elevation will be,

Then the elevation of outer rail will be given by,

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• A series LCR circuit in which R=3 ohm ,L=25 MH and C = 800 uF a sinusoidal a.c voltage of peak value 250 V is applied.

• Frequency at which resonance occurs.

• Current in the circuit at resonant condition.

A circuit containing LCR, L = indicator, C = Capacitor, R = Resistor

It is CONNECTED to AC supply.

• R=3 ohm

• L=25 mH = 25 ×

• C = 800 uF = 800 ×

• Peak value 250 V

a.) Frequency at which resonance occurs.

➝ Resonant frequency =

=

➝ =

➝ f = 1/2π× 25 × × 800 ×

➝1/ 20000 ×

➝1/ 2 ×

➝ 1/2 ×

➝ =

➝ 2.5 × RAD s-¹

b.) Current in the circuit at resonant condition

➝ I =

➝ I =

I = 83.34 A

ong>Answer:

By convention,the charge on glass rod or cat's fur is CALLED positive and that on plasticrod or SILK is termed NEGATIVE. If an OBJECT possesses an electric charge, itis SAID to be electrified or charged. When it has no charge it is said to beneutral.

please mark as brainliest

6.75 km is the answer.

this is CORRECT answer my FRIEND

SORRY I don't KNOW okkkkkkkkkkkkkkk

ong>EXPLANATION:

The force is DIRECTLY proportional to the product of their MASSES and inversely proportional to the square of the distance between them. In equation form, this is F=GmMr2 F = G mM r 2 , where F is the magnitude of the gravitational force. ... Newton's law of GRAVITATION applies universally.

ong>Answer:

The force of Friction between the TYRES and the road PROVIDES the necessary centripetal force to a car TAKING a turn on a level road.

⊂(ο･㉨･ο）⊃⊂(ο･㉨･ο）⊃⊂(ο･㉨･ο）⊃

ong>Explanation:

DISPLACEMENT be s m.

time = t s

initial VELOCITY(U) = 0 m/s

s = UT + 1/2 × g × t^2

=> s = 0 + 1/2 × 9.8 × t^2

=> s = 4.9 t ^2

so avg velocity = total displacement ÷ total time = 4.9 t^2 / t = 4.9 t m/s

MOTION, in physics, change with time of the position or ORIENTATION of a body. Motion ALONG a line or a curve is called translation. ... In both cases all points in the body have the same VELOCITY (directed speed) and the same acceleration (time rate of change of velocity).

resistance of tungsten is high and resistance is directly proportional to heat. when resistance increases heat ALSO increases that's why tungsten starts glowing when ELECTRIC CURRENT is passed through it.

ou have ever used a compass (either the traditional mechanical one or the one built in your Smartphone), then you know it always points north. If you suspend a refrigerator magnet, it will also point north. This suggests that there is a magnetic field all around us generated by the earth under your feet!

The earth’s magnetic field extends MILLIONS of KILOMETRES into outer space and looks very much like a bar magnet. The earth’s SOUTH magnetic pole is actually near the North Pole and the magnetic north pole is in Antarctica! This is why a compass magnet’s north pole actually points north (north and south poles attract). The Earth’s magnetic field extends far and wide but is very weak in TERMS of field strength. A mere 40,000 nT compared to a refrigerator magnet which has a strength of 10

The Earth’s magnetic field extends far and wide but is very weak in terms of field strength. A mere 40,000 nT compared to a refrigerator magnet which has a strength of 107 nT!

1,06,312

Theory of Earth’s MAGNETISM

There is one theory that explains how the earth’s magnetism is caused:

Dynamo effect: The earth gets its own magnetic field lines because of the presence of the metallic fluids that are present at the outer core as well as in the inner core. The outer core consists of molten iron, while the inner core has the solidified elements.

y NAME is VAIBHAV and the ANSWERS in 4

Given,

Power = 23W

Potential Difference = 220V

Cost of 1kWh = RS. 0.8

Energy spent in a DAY by using the lamp for 6 hours = [Power*Time]/1000

= [23*6]/1000 kWh

= 138/1000 kWh

= 0.138 kWh

Energy spent in 105 days = [0.138*105] kWh

= 14.49 kWh

Total Cost = Rs. [14.49*0.8]

= Rs. 11.592

The Cost of Lamp after 105 days will be Rs. 11.592

I HOPE this HELPS.

FRICTIONAL force

please mark as BRAINLIEST

ong>ANSWER:

ANSWERING the question by tomorrow

Explanation:

please MARK it as BRAINLIEST

2 A

EXPLANATION:

GIVEN:-

RESISTANCE in A = 5 Ω

Resistance in B = 5 Ω

Resistance in C = 5 Ω

Voltage = 10 V

To find:-

CURRENT (I) through resistor C

Solution:-

∴ The current through resistor C is

ong>Answer:

2 SECONDS

Explanation:

time taken to TRAVEL half DISTANCE = 4/2 = 2 seconds

athematics, informal LOGIC and argument mapping, a lemma (plural lemmas or lemmata) is a generally minor, proven proposition which is used as a stepping STONE to a LARGER result. ... The word "lemma" derives from the Ancient GREEK λῆμμα ("ANYTHING which is received", such as a gift, profit, or a bribe).

ong>Answer:

Mark me as BRAIN list if u wanted..

THANKS...

K hfdkk,ylk5ijeth vOtfjsurqitlgs4iwiszgsosdirddgcufyoei5bx

FORCE can be defined as a push or a pull on any object.A force has both MAGNITUDE and DIRECTION

,making it vector quantity

define light?

The natural agent that stimulates sight and makes things visible

define plasma?

The colorless fluid part of BLOOD ,lymph or milk, in which corpuscles or fat globules are suspended

ong>ANSWER:

There are nearly 100 DIVISIONS in a screw gauge.

Generally, the 0th division of main scale COINCIDES with the 0th division of CIRCULAR scale when base line is BROUGHT together with the circular scale line.

pls mark me brainliest

ong>ANSWER:

SORRY yaar answer mujhe nahin pata

hockey is the INTERNATIONAL game of india

ce the excess pressure due to SURFACE tension is inversely proportional to its radius, it follows that smaller the BUBBLE, greater is the excess pressure. ... As a result, the smaller bubble SHRINKS and the larger one swells.

ong>ANSWER:

Assertion: If a gas CONTAINER in motion is SUDDENLY stopped, the temperature of the gas rises. Reason: In given PROCESS, the kinetic energy of ordered mechanical motion is converted into the kinetic energy of RANDOM motion of gas molecules.

ong>ANSWER:

T - mg = ma -(1)

2MG - T = 2ma -(2)

Explanation:

from equation (1) and (2) we GET, a = g/3

Put the value of 'a' in equation (1)

T - mg = mg/3

T = mg/3 + mg

T = 4 mg/3

2X(x³)+2x(-7X)+2x(4)+4(x³)+4(-7x)+4(4)=2x⁴-14x²+8+4x³-28x+16=2x⁴+4x³-14x²-28x+24

️

Friction STOPS THINGS from sliding apart. If there was no friction everything would slide to the lowest point. It would be impossible to climb up anything. ... With no friction the only possible movement would be falling to a lower point under gravity.

uestion Given :

• Derive an expression for the difference in tensions at highest and lowest point for a particle performing vertical circular motion.

✠ Required Solution :

• At DIAGRAM :

• ⇒ T - mgCosθ = mv²/ R ( centrifugal force)

• ⇒ T = mv²/ R - mgCosθ

✯ At Highest Point :

• ( θ = 180° , Cos180° = -1 )

• ⇒ T min = mv²/R - MG

• For string not to be sla.ck

• ⇒ T min > 0 ( looping to loop)

• ⇒ mv²/R - mg > 0

• ⇒ V = √ rg

✯ At Lowest Point :

• ⇒ ( Cos180°= +1 , θ = 0 )

• ⇒ Tmax = mv²/R + mg ____ (eq1)

• Apply conservation of energy

• ⇒ 1/2 mv² ± 1/2 mv² + mg (2r)

• ⇒ 1/2 mv² > 1/2 mv² + mg (r2)

• ⇒V ²/2 > 5gr /2

✠ V = √ 5gr ( min velocity required)

• Putting equation (2) in (1)

• ⇒ Tmax = m (5gr) /r + mg

• ⇒ Tmax = 6 mg

✯ At Middle Point :

• By law of conservation of energy

• ⇒ Tm = TL

• ⇒ 1/2 mv² + mg(r) = 1/2 mv²

• ⇒ 1/2 mv² > m(√5gr) ² - mgr

• ⇒ 1/2 mv² > 5mgr/ 2 - mgr

• ⇒ 1/2mv² > 3mgr/2

• ⇒ Vm = √ 3 great

• ⇒ T > m ( 3gr) /r + mg cosθ

• ⇒ T > 3 mg

✠ Note :

• ⇒ Required Diagram is in attachment :D

_____________________________

ong>Explanation:

According to the parallelogram law of vector addition if two VECTORS act along two adjacent sides of a parallelogram(having magnitude equal to the length of the sides) both POINTING AWAY from the COMMON vertex, then the resultant is represented by the diagonal of the parallelogram passing through the same common vertex .