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ong>ANSWER:

This formula is used to find the average speed of a PARTICLE if it covers equal distance with VELOCITIES v1 and v2

Explanation:

refer the picture

At the mean position, the total ENERGY in simple harmonic motion is purely kinetic and at the extreme position, the total energy in simple harmonic motion is purely potential energy.

Explanation:

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ong>Answer:

The Galileo's law of odd numbers states that the distances traveled are PROPORTIONAL to the squares of the elapsed times. In other WORDS, in equal successive PERIODS of TIME, the distances traveled by a free-falling body are proportional to the SUCCESSION of odd numbers(1, 3, 5, 7, etc.).

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ong>Explanation:

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.

ong>Answer:

Vadeihna. the following is a bit of a 2, I will not sure about that I am GOING through the post office. I have to go to the following? MOTION of the PROPELLER of a flying

ong>ANSWER:

answer is (C) in the tangent of the BODY

432 KM is the ANSWER of this QUESTION

ong>Answer:

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And Happy HOLI in

ADVANCED Dear !

Given :

• Mass of silver = 100G
• c = 0.056 cal/(g °C)
• Temperature change = ∆T = 10°C

To find :

HEAT required

Formula used :

Q = m × c × ∆T

Here,

• Q = Heat required
• m = mass
• c = Specific heat capacity
• ∆T = Change in temperature

Solution :

Q = m c ∆T

➝Q = 100g × 0.056 cal/(g °C) × 10°C

➝ Q = 100 × 10 × 0.056 cal

➝ Q = 1000 × 0.056 cal

➝ Q = 56 cal

ANSWER : 56 cal

ong>Answer:

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ong>Answer:

if you FIND it helpful then PLEASE MARK me as a BRAINLIST..

ong>Answer:

A boat moves relative to water with a velocity half of the RIVER flow velocity. If the angle from the direction of flow at which the boat must MOVE relative to stream direction to minimize drift is n2π , then FIND n .

ong>Answer:

tungsten wire

Incandescent light bulbs consist of an air-tight GLASS ENCLOSURE (the envelope, or bulb) with a filament of tungsten wire INSIDE the bulb, through which an ELECTRIC current is passed.

Explanation:

ong>Answer:

FORCE- In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its VELOCITY, i.e., to accelerate. Force can ALSO be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.

sunlight- Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet LIGHT. On Earth, sunlight is scattered and FILTERED through Earth's atmosphere, and is obvious

air- The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere

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ong>ANSWER:

True

Explanation:

Yes the acceleration due to GRAVITY at the centre of the Earth is ZERO because at the centre of the Earth the body is equally attracted in all directions due to the mass of the Earth.

ong>ANSWER:

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ong>Answer:

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Explanation:

v² = 2eV / m.

U = 60

m = 1/3

Explanation:

lens formula = 1/f = 1/u + 1/v

1/u = I/f - 1/v

1/u = 1/30 - 1/20

1/u = 20-30/600

1/u = 10/600

u = 60

m = v/u

= 20/60 = 1/3

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i'm SORRY no UNDERSTAND

• Cultural: Religion or cultural significance increases the population density of certain PLACES. DUE to this religious CITY like Varanasi, Jerusalem and VATICAN City are densely populated. Economic: population distribution increases in areas which provide BETTER economic opportunities.

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They will not HIT the ground

Explanation:

because they are in VACUUM

e catching a fast moving CRICKET ball, a fielder in the ground gradually pulls his hand BACKWARD because by doing this, he INCREASES the time in which the VELOCITY of ball will become zero. Thus, the rate of change of momentum will be large and less FORCE will be exerted by the ball on the hand of the fielder

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ong>Answer:

Laws of RESISTANCES in parallel:

Laws of resistances in parallel:(i) Voltage across each resistance is same and is equal to the APPLIED voltage.

Laws of resistances in parallel:(i) Voltage across each resistance is same and is equal to the applied voltage. (ii) TOTAL current = Sum of the currents through the INDIVIDUAL resistances.

Laws of resistances in parallel:(i) Voltage across each resistance is same and is equal to the applied voltage. (ii) Total current = Sum of the currents through the individual resistances. (iii) Currents through various resistances are INVERSELY proportional to the individual resistances.

By the property of similar triangle, we have

AB / DE = BC /DC = AC /AE

4 / 3 = BC / 4.8 = AC / 4.2

⇒ BC=6.4 and AC=5.6

HENCE CA=5.6cm,DA=6.4cm  

ong>Answer:

Snell's law, in optics, a relationship between the path TAKEN by a ray of light in crossing the boundary or surface of separation between two CONTACTING substances and the refractive INDEX of each. This law was DISCOVERED in 1621 by the Dutch astronomer and mathematician Willebrord Snell (ALSO called Snellius).

artificial RIPENING if fruit

ong>Answer:

A Fresnel Biprism is a thin double prism PLACED base to base and have very small refracting ANGLE ( 0.5o). This is equivalent to a single prism with one of its angle nearly 179° and other TWO of 0.5 o each. ... Monochromatic light through a NARROW slit S falls on biprism , which divides it into two components.

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ong>Answer:

Thomson

During the 1880S and '90s scientists searched cathode RAYS for the CARRIER of the electrical properties in MATTER. Their WORK culminated in the discovery by English physicist J.J. Thomson of the electron in 1897.

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ong>Answer:

V= volume of cylinder, r = radius of cylinder l = LENGTH of cylinder. cm, S = value of 1 Main scale division , N = Number of vernier divisions. ... Length (or) diameter of Cylinder = Main scale READING (a) cm + ( n*L.C ) cm

Explanation:

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ong>ANSWER:

there are MANY types example is Hubble TELESCOPE it is largest ONE

Answer:

EXPLANATION:

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ong>Explanation:

Hii actually I like Matsuda his cute , handsome , and ALSO want to help in Kira investigation but no one pay attention on him .

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i like L in death NOTE LIVE action drama

person who did L action is Kento that guy is AWESOME

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what does the WORD 'Jodi' MEAN

ong>Answer:

The reason the rays appear to have a DIVERGING SHAPE is because of perspective, and the fact that these truly parallel rays of light are land closer to us than their point-of-origin, way back at the bottoms of the clouds. ... That's simply what it LOOKS like when you view parallel lines as they recede away from you.

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distance: 500m = 0.5km

time = distance/SPEED

= 0.5/70

= 0.000714 hours (APPROXIMATELY)

= 25.714 SECONDS.

115 MM will be your ANS!!

ong>ANSWER:

Don't know anyways GOOD morning have a nice day

strong>SOLUTION :-

• Understanding the Figure ::

Here in this figure, the light ray passes from atmosphere into rain drops and then comes out with dispersed colours showing the beam of colours.

• Real Phenomenon : Either Total Internal Reflection or Internal Refraction ::

Actually the real process happening there is Internal Reflection not Total Internal Reflection. For Total Internal Refraction, the angle of the refracted ray from the atmosphere to the water drop, should be more than the critical angle. But here that isn't happening. Even in Total Internal Reflection after getting reflected back from the raindrop's surface, whole of the light get's reflected back in the direction it entered. Here the light ray is reflected in opposite direction.

You know why this change is occuring ?

Actually some of the light energy get's diffused making the speed of light change and thus the direction also changes. But in case of Total Internal Reflection, whole of light energy get's transmitted back.

In case of Internal Reflection only the left light energy get's transmitted. That's why it get's reflected only internally in the rain drop.

• Role of Total Internal Reflection ::

Actually the approximity of the diffusion of some light energy, is very less and the angle difference required for Total Internal Reflection is also less. When we go on studying the cases of Internal Reflection, we have different cases which aren't based on the concept of CLASS 10. Thus for the convenience of the students, it is taken to be Total Internal Reflection by the NEGLIGENCE of the differences. But according to Ray Optics of class 12, it is made to understand the real phenomenon here.

In real, Total Internal Reflection isn't involved in Rainbow Formation.

• About the given diagram ::

The given diagram is exactly correct because the ray of light is clearly and correctly shown in this. Also there is proper marking of direction of the ray of light and also correct angle and phenomenons.

• Formation of Rainbow ::

Rainbow formation takes place due to three phenomenon that is Refraction, Dispersion and Internal Reflection. When the ray of light strikes the rain drop it refracts and thus enters in the rain drop. This CAUSES change in it's speed due to difference in refractive index. Then it suffers dispersion which MAKES the bands of colours visible. This forms the colours of the rainbow. Then this band strikes the back surface of the raindrop and reflects internally in the raindrop facing internal reflection. And then we finally it refracts backs coming out of the raindrop as a band of seven colours which is visible to the different organisms.

Current is the amount of charge passing through a conductor in a particular interval of time.

So according to the definition, the formula for the current is:

I = Q/t

I = 2 A and t = 1 sec

Therefore,

Q = I*t

Q = 2*1 = 2 C

One electon consists of a charge of 1.6*10^-19 C. Then the number of electrons passing would be:

Q = N*e

n = Q/e

n = 2/(1.6*10^-19) = 1.25*10^19 electrons

24 OMEGA is the CORRECT answer as it is highest

ong>ANSWER:

Explanation:

POLITICS is the set of activities that are associated with making decisions in groups, or other forms of POWER relations between individuals, such as the distribution of resources or status.The purpose of our major is to deepen knowledge and UNDERSTANDING of one of the most powerful FORCES operating on people, communities and corporations today, namely government and politics in the USA and around the world. This knowledge and understanding is valuable for all citizens.

ong>ANSWER:

I can help you after I REACH in your STD

ong>Answer:

Magnitude of the VELOCITY of particle is 8 m/s

Explanation:

Position : R=4sin(2πt)i^+4cos(2πt)j^

Velocity: v=4×2πcos(2πt)i^−4×2πsin(2πt)j^

ACCELERATION: a=−4(2π)2sin(2πt)i^−4(2π)2cos(2πt)j^=−(2π)2R

∴ acceleration is along −R

Magnitude of velocity: ∣v∣=(4×2πcos(2πt))2+(−4×2πsin(2πt))2=(8π)2SIN2(2πt)+COS2(2πt)=8π

Magnitude of acceleration : ∣a∣=∣−(2π)2R∣=4π2∣R∣=16π2=

4(8π)2=Rv2

Rx=x=4sin(2πt)

Ry=y=4cos(2πt)

Rx2+Ry2=x2+y2=42

⇒ the path of the particle is a circle of radius

ong>Gravity: P>

➟ The gravitational force of earth is known as gravity i.e., gravity is the force by which earth pulls a body toward it's centre.

➟ The acceleration produced in a body DUE to force of gravity is known as acceleration due to gravity. Acceleration due to gravity is denoted by “g”. And g's value is 9.8 m/s².

➣ Acceleration due to gravity is independent of shape, mass and size of the mass of the body.

➟ Gravitation- Every body attract other body by a force called force of gravitation.

➣ Newton's law of gravitation- The force of gravitational attraction between two points bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. Considering two points are PLACED at a distance The force of gravitational attraction between them,

Here is constant called universal gravitational constant. The value of G is

Additional information:

♛ Work - If a body get displaced when a force acts on it, work it said to be done. Work is measured by the product of force and displacement of the body along the DIRECTION of force. If a body get displaced by S when a force F act's on it, then the work W =

[Where, ∅ denotes angle between force and displacement]

If both force and displacement are in the same direction, then W = FS.

Work is a scaler quantity and it's SI unit is joules.

♛ Energy = Capacity of doing work by a body is called it's energy. Energy is a scaler quantity & it's SI unit is Energy developed in a body due to work done on it is called mechanical energy. Mechanical energy is of two types –

• Potential energy
• Kinetic energy

➜ Potential energy = The capacity of doing work developed in a body due to it's position or configuration is known as potential energy like, ⑴ energy of stretched or compressed string ⑵ energy of spring in a watch ⑶ energy of water collected at a height.

PE of a body is the gravitational field of earth is

[Where, m denotes mass , g denotes acceleration due to gravity and h denotes height of the body from the surface of the earth].

➜ Kinetic energy = Energy posses by a body due to it's motion is called kinetic energy of the body. If a body of mass is moving with speed then kinetic energy of body is

[Where, m denotes mass and v denotes speed].

Rєlαtíσn вєtwєєn mσmєntum αnd kínєtíc єnєrgч –

[Where, p = momentum = mv]

×0.056cal/g. ∘C×10∘C=56

STATEMENT (d) is incorrect

becouse toys are MADE up of thermoplastic .