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Radioactive Decay Law: In a radioactive MATERIAL, it is found that the radioactive DECAYS per UNIT time are DIRECTLY proportional to the total number of nucleiof radioactive compounds in the sample.

The Planck constant (denoted h, ALSO CALLED Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.

First recognized in 1900 by Max Planck, it was conceived as the proportionality constant between the minimal increment of energy, E, of a hypothetical ELECTRICALLY charged oscillator in a cavity that contained black body radiation, and the frequency, f, of its associated electromagnetic wave. In 1905, the value E, the minimal energy increment of a hypothetical oscillator, was theoretically associated by Albert EINSTEIN with a "quantum" or minimal element of the energy of the electromagnetic wave itself. The light quantum behaved in some respects as an electrically NEUTRAL particle, as opposed to an electromagnetic wave. It was eventually called a photon.

In simple LANGUAGE FLOW of CHARGED particles.In a conductor its Electrons, in an ELECTROLYTE its ions and so on....

SPEED is a Scalar Quantity

∴ CHANGE in DIRECTION does not affect Speed

So a body CHANGING its direction may possess UNIFORM speed if it is not accelerated

Hey
Let the UNKNOWN COMPONENT be x.
Therefore,
65 ²= 25² + x²
x = √(65² - 25²)
x = √(4225 - 625 )
x = √3600
x = 60 answer.

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what is the QUESTION

By enumeration

Therefore MINIMUM WHOLE value of Y is 0

If we CONSIDER Integers it will be positive

We KNOW that,

1 Watt hour = 3600 JOULES

=> 250 units = 250 Watt hour

=> 250 Watt HOUR = 250 * 3600 = 9,00,000 Joules.

Hence 250 units CONSUMED 9,00,000 Joules of ENERGY on that month.

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The difference between ordinary and special moment resisting FRAMES are as under;

(i) Ordinary Moment Resisting Frames are the frames that are unable to fulfill the special DETAILING requirements for ductile behaviour.

(ii) Special Moment Resisting Frames are the frames that are able to fulfill the special detailing requirements for ductile behaviour.

They are corelated in such a way as the LIGHT is known as ELECTROMAGNETIC radiation the electromagnetic SPECTRUM divide into VIBGYOR when passed through prism

U=18 km/h


=5m/S
v=0m/s
t= 2.5s

as we know retardation is NEGATIVE accleration
acceleration =CHANGE in velocity



a=-2 m/s^2




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Newton's first LAW state that if a body is in rest it will REMAIN in the state of rest and if it is MOVING it will remain moving with same SPEED in same direction until an EXTERNAL force is applied in it

1cm=10mm
hence 0.2cm=0.2×10=2mm

ACTIN and MYOSIN are the PROTEINS helping in MUSCULAR Movements

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Its that ANSWER TRUE

The ATMOSPHERE exerts PRESSURE on everything

Thus every object has to exert a pressure to avoid getting crushed

That is why if we go to the moon or space we need to wear pressure SUITS (the pressure there is different)

The bottle's pressure is provided by the fluid inside it either the air or water

Therefore when we remove air using VACCUM Pump the bottle gets crushed

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The relative permeability of iron compared to AIR is about 200. Thus, introduction of iron core will magnify the inductance by 200 times compared to air core. In other words , inductance will INCREASE 200 times......

The rate constant goes on INCREASING as the temperature goes up, but therate of increase falls off quite RAPIDLY at higher temperatures. A catalyst willprovide a route for the REACTION with a LOWER activation energy. ... And the rate constant k is just one factor in the rate equation.

I THINK so it is not USED in ARITHMETIC

Binoculars
telescope
peephole

Yes

Explanation:

SPHYGMOMANOMETER is the INSTRUMENT for MEASURING BLOOD PRESSURE.

Answer:

2m/s

Explanation:

AVERAGE speed

3m/s + 1m/s

4m/s /2

2m/s

Handles can be made up of any materials. Mostly, the handles are made up of wood and plastic. Metals are also for making handles earlier times. Therefore, the heat CONDUCTIVITY of handles made up of plastic and wood will be very LESS and thus, it makes it comfortable for the person to hold the utensil or whatever the handle is put on , whereas , the heat conductivity of handles made of metals are very strong which makes it difficult to handle for a person with bare hands as our body too, is a GOOD conductor of heat and electricity.

EXPLANATION:

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Angular Velocity = Angle ( in RADIANS ) / Time

Angle for ONE HOUR DISTANCE covered by minute hand = 2π radians.

Minutes = 60 minutes = 3600 seconds

=> Angular velocity = 2π radians / 3600 seconds

=> Angular Velocity = π / 1800 Radians / second

=> Angular velocity = 180° / 1800 = 0.1 ° per second.

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A PARTICLE is projected at an ANGLE theta with horizontal from ground.The SLOPE(m) of the trajectory of the particle varies with time (t) as

y=a-bx

In his periodic table, Mendeleev arranged the elements by atomic weight (relative atomic mass) Nowadays, we arrange the elements according to atomic NUMBER, but that information was not available in 1869. 1869 was the year that Russian chemist Dmitri Mendeleev (1834- 1907) published his Periodic "System" of the elements. Acc ording to the .org website www.rsc.org/education/ Other people, like Londoner John Newlands, Frenchman Alexandre Béguyer de Chancourtois, and German JuliusLothar Meyer made important contributions to the first Periodic Table but the main credit goes to Mendeleev." Here's a picture of a SHAGGY Mendeleev looking like a mad scientistlist the elements left to right in rows according to mass, and also from top to BOTTOM in columns according to their properties. Mendeleev wasn't deterred by the poor quality of the data at that time. . Only about 50 elements were known In some cases, their relative atomic masses were miscalculated There were gaps where some elements were MISSING- not yet discovered . The atomic mass isn't a gooelements to get out of place But Mendeleev was convinced that listing the elements according to their properties in columns would create a "double entry" table with their atomic masses going across in rowS. Therefore, when the use of atomic mass instead of atomic number incorrectly located odine before tellurium, he knew ENOUGH to switch them anyway because of the properties of iodine. Another mathematical difficulty placed beryllium between carbon and nitrogen, wherethere was no space for it. Mendeleev simply changed the math in order to get beryllium into its correct slot in the periodic table. Most important was Mendeleev's predictions of elements as yet unknown. There were gaps in the table he created, but not only did he correctly predict that elements would be discovered that filled those gaps, he also predicted their properties. Three such predictions were proved correct in Mendeleev's lifetime, and two other elements that he predicted were foundHere is a color-coded periodic table that is useful and also quite beautifu.

The examples for the translatory motion are: 
A man running 
A bus MOVING 
A DOG WALKING 
A ship sailing 
Moving of a ball. Translatory motion

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(a) true

(B) true

(C) true

(d) false

(e) true

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An object travels equal DISTANCE in equal interval of time is called UNIFORM motion
an object travels UNEQUAL distance in equal interval of time is called NON uniform motion 3 ans

Tension = Centripetal FORCE

Centripetal Force = Mass x Velocity^2 / Radius

Mass cannot CHANGE and radius is KEPT CONSTANT

So, velocity has to change

Velcoty change =2

Since its Velocity squared answer is √2 times 5 R.P.M

=5√2 R.P.M

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ANSWER ⇒ There is ACCURATELY no point on the sphere that has the velocity vector POINTING in the vertical direction.

In Practical measurements, At the points very NEAR to the point which is in contact at the instant has a nearly vertical velocity with a very SMALL magnitude.

Just at the contact point, when the velocity becomes true vertical, its magnitude becomes zero.

Hence, we can not say that a vertical velocity.

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Answer with Explanation ⇒

According to the question, each OBJECT has the same radius, THUS the total torque on each of them will be same. Thus, the angular acceleration will be GIVEN by the 

Formula :-

                  α =Γ/I.

Thus from this relation we can SAY that the object with minimum 'I' will be having the maximum angular acceleration.

Now, Let us see the value of 'I' for the given objects ⇒

Hollow sphere = (2/3)mr²

Solid Sphere = (2/5)mr²

Disc = 1/2 mr²

Ring = mr²

From this we can observes that the minimum 'I' of them is for the solid sphere. Thus, the solid sphere will take the smallest time to cover a given length.

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The permittivity of free space (a vacuum) is a PHYSICAL constant equal to approximately 8.85 x 10-12 farad per meter (F/m). It is SYMBOLIZED o. In general, permittivity is symbolized and is a constant of proportionality that exists between ELECTRIC DISPLACEMENT and electric field intensity in a GIVEN medium.

The gravity at the surface of the Moon is about 1/6 that is EARTH. So a 30 kg (ignoring that kg is a unit of MASS not a weight FORCE) mass would ‘weigh’ 1/6 (30) or 5 kg. Note that the mass of the OBJECT doesn’t change.

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