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20×2.5=50m ................

By the formula ,

s = ut + (1/2) at2

by replacing the values,

H = 0(T) + (1/2) (10) (T2)

H = 5T2

.

Therefore,

POSITION of the ball at T/3 secs = (1/2) (10)(T/3)2

=5T2 / 9 = H/9

.

Hence at T/3 secs the ball is H/9 meters from TOP of the tower.

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Answer:

EXPLANATION:

N=N'/(2^n),where n is number of half LIFE,N' is concentration after n half lives

Apply this formula, you will GET the answer.

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⭐. The speed of light is constant in vaccum for all colours , but it depends on the wave length of light when it passes through a medium.

⭐. We know that refractive index of a medium depends on wavelength of light

⭐. When white light passes through a medium , each colour selects its least time path and we have refraction of different colours to different extents.

⭐. This results in seperation of colours , producing a spectrum.

⭐. It has been experimentally found that refractive index decreases with an increase in wavelength.

⭐. In VIBGYOR , red colour has longest wavelength and voilet colour has shortest wave length . The refractive index of red is low , hence it suffers low deviation.

Given,
initial velocity (u) = 20m/s
Final velocity (v) = 0. ( As bullet come to rest after striking to wall )
Distance TRAVELLED (S) = 5cm = 0.05m
Now,
Using third equation of motion,

v² = u² + 2as

0 = 20² + 2× 0.05 *a

a = -400/0.1

a = -4000m/sec²
Note:- NEGATIVE SINGS shows that BODY has a retardation and its SPEED is decreasing.

Answer:

EXPLANATION:

Magnitude of 4A=4*2.7=10.8 UNITS due EAST, HOPE you understood.

1. The resultant force is determined by the direction of the forces.
2. If the forces are in OPPOSITE direction, we add the forces to GET the resultant force. In this case the resultant force will be 16 Newton.
3. If the forces are in the same direction we get the DIFFERENCE of the forces and in this case the resultant force is 4 Newton.
4. If the forces are PERPENDICULAR, the resultant force will be the hypotenuse of the right angled formed. The resultant force will be 11.66 N.

E) UNIT of gravitational FIELD strength is Newton/kg or m/sec2. Dimension formula is [M0 L1 T-2]. F) As the distance (r) increases, gravitational field strength decreases. ... E = = g, it is clear that the intensity of gravitational field at any place is EQUAL

When cotton is burnt -
1) It burns completely.
2) It doesn't PRODUCE any odour.

When NYLON is burnt -
1) It STARTS melting.
2) It PRODUCES odour while burning.

Speed=Distance/ Time
Speed=(1000/100)m/s
Speed=10m/s

Velocity= Displacement/Time
Velocity =(1000/100)m/s east
Velocity =10m/s east.


Hope it HELPS you.....

Acceleration:9.8m/s(because of GRAVITY)
Velocity:0m/s(because,it STOPS there for a while)
HOPE this ANSWER HELPS you.

Here......
INITIAL velocity=18kmph=5m/s.
final velocity=10m/s.

we KNOW v=u+at.
so 10=5+5a
a=1m/s^2.

we have
distance=ut +1/2at^2
so
distance=5+1/2(1)(5^2)
=5+12.5=17.5m

Voltage Regulation, in GENERAL, is defined as change in magnitude of Secondary Terminal Voltage per UNIT Rated Secondary Terminal Voltage when LOAD at a given Power Factor is reduced to zero while maintain the Primary Voltage constant.

The change in magnitude of Secondary Terminal Voltage with loading of Transformer is because of Primary and Secondary leakage IMPEDANCE. The magnitude of this change in voltage depends on the load current, load power factor, total leakage reactance and total resistance of Transformer.

As the consumer need their terminal voltage to be within a prescribed limit, the Voltage Regulation of a Distribution Transformer shall be less i.e. GOOD. For better Voltage Regulation of a Distribution Transformer, it is quite important that their leakage impedance shall be less.

If a position vector is given then you can find it's velocity but SIMPLY DIFFERENTIATING it with RESPECT to time. You have time (t) in the position vector.

THETA=© ;

r= a Cos(©*t) i + a Sin(©*t) j ;

(dr/dt)= V (velocity);

V= a [ {-Sin(©*t) * ©} + {Cos(©*t) * ©} ] ;

V = a*© {Cos(©*t) — Sin(©*t)} ;

Velocity will be

a* theta ( cos (theta t) — sin(theta t) )

Application of refraction of light is a TOOL which helps us in understanding the basic concepts about the refraction of light and its application. First of all let us understand the basics of refraction of light and then we will study about application of refraction of light.

GENERALLY refraction of light occurs when the waves travel s from one medium to another medium, with some refractive index and it generally enters other medium at oblique angle. There are various phenomenon’s associated with the refraction. Refraction of light has a MAJOR scope in case of optics and in the field of technology. For example, lens uses the basics of refraction of light to form an image of an object for various purposes, such as magnification. The other example is prism which also uses refraction to form a spectrum or band of colors from incident RAY of light. In optical illusion and mirage, refraction generally plays a big role.

Various scientific things have been explained with the help of refraction. Day to day phenomenon’s are also explained with the help of refraction. One example which we are most familiar is ‘Twinkling of stars’. This phenomenon is explained in this way. The atmosphere which is blanket of earth actually consists of various layers of varying densities. It is because of change in temperature and pressure. The phenomenon is when the ray o f light enters into the layers of continuously increasing densities they are being refracted because of change in medium. In this complete process, ray of light follows curve path and hence it reaches to us. But because of the wind and currents, the density of the layer continuously increases and hence in turn the density of each layer goes on changing from layer to layer. And because of this at very small interval of time, the position of the image of start keeps on changing, and hence it ultimately produces the TWINKLE effect. This is all based on the concepts of refraction.

The same principle can be used to explain the apparent sunrise or sunset. The basic concepts of refraction are used to describe the complete process. The other applications of refraction are as follows:

1) Spear fishing, in which spear fisherman use a smart trick to catch the prey. The spear fisherman generally aims at a point below where the fish seems to be. This is because light actually changes its direction from one medium to another of different densities. This change is basically known as refraction.

2) Bending of stick in water. In water, a stick engrossed in water generally appears bent and small when viewed at an angle from above. This is also because the rays of light actually travel from water medium to air medium and hence in bend away from the normal at the surface.

3) A coin appears raised in water. The same explanation exists.

From above discussion we have seen that refraction of light has been used to understand the scientific facts in almost all fields. This is all about application of refraction of light

The formula for average speed = total distance/total time.
let the time TAKEN is t hours.

so distance TRAVELED in FIRST t/2 hours.
=40×t/2=20t.

distance traveled in second t/2 hours.
=60(t/2)=30t.

so total distance=20t +30t=50t km.

average speed=50t/t=50kmph

I can't understand you QUESTION...
if you are ASKING that how many chromosomes are present in dog is
Dogs, which are under the species Canis lupus familiaris, are known to have a TOTAL of 78 chromosomes (2n).

u = o m/s

v = 72 km/h = 72*5/18 m/s

= 20 m/s

t = 5 MIN = 5*60 s

= 300 sec

a) a = ?

As v = u + a t

so, 20 = 0 + a * 300

so, a = 20/300 = 1/15 m/s^2

= 0.0667 m/s^2

b) s = ?

As 2as=v^(2)-u^(2)

so, 2* 0.0667 * s = 20^2 - 0

so, s = 400/ 0.1333 m

= 3000.075 m

Which SECTION of an ESSAY INCLUDES the REFERENCES?
Introduction
Body
Conclusion
Bibliography

What is the QUESTION

A CAR TRAVELS a distance of 100KM at a uniform speed of 40km/h.
Time TAKEN to travel 100km=distance/speed = 100/40=5/2=2.5 hour
It travels NEXT 125km at a uniform speed of 50km/h.
Time taken to travel 125km=distance/speed = 125/50=5/2=2.5 hour
Total distance travelled=100+125=225km
Total time taken=2.5+2.5=5.0hour
Average speed =
Total distance covered/Total time taken=
225/5=45km/h
Therefore, average speed of the car is 45km/h.

It is MADE up of copper because it is a GOOD conductor of HEAT and ELECTRICITY

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Press.=force/area
=35N/7metre SQUARE
=5PA

We KNOW that
2 pi r = n LAMBDA
600 × 10 ^ -6 = 2 lambda
Lambda = 300 * 10^-6
Potential V = h^2/ 2mq(lambda)^2
P = (6.63*10^-34)^2/ 2 *9.1×10^-31 × 1.6×10^-19 ×(600*10^-9)^2
P= 1.675×10^-5 V

As per me it's answer is 160.
as because by USING the formula of MAXIMUM range as R=u²/g.

1N=10^-7dyne
1dyne =1/10^-7N

There are two tyoes of MIRRORS concave and CONVEX type of mirrors
convex mirrors has the FOCAL LENGTH equal to infinity

Hii...♥···♥····♥
this is ua answer ------>

In cgs, the ENERGY density contained in a magnetic field B is
(1)
and in MKS is given by
(2)
where
is the PERMEABILITY of free space.
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It was GIVEN by the GREAT ISAAC NEWTON

Heat is TRANSFERRED in all MATTERS EXCEPT VACCUM (d)point

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HERE IS UR ANSWER.............

When the average DISTANCE is equal to average DISPLACEMENT..........the average velocity becomes same................

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GREASE and OIL are TYPES of LUBRICANTS

Basic MEASUREMENT are grams for weight , litre for CAPACITY, METRE for distance $ DGREE for temperature

In an INDUCTION STOVE is a very GOOD EXAMPLE

a. work done=F*d=29*10*sin53*4 =928 J

b. if HORIZONTAL then ALSO same............

this is because PRESSURE under water is really GREAT which can crush their bodies. so they wear SPECIAL suits which maintain normal air pressure inside the suit which prevents their bodies from GETTING crushed in deep water.

In ORDER to know why voltage is kept constant for input characteristics and CURRENT is kept constant for output characteristics in CE mode, first we have to know the hybrid parameters and its model.

The hybrid parameters are generally used to determine amplifier characteristic parameters such as voltage gain, input and output RESISTANCE etc. We have already know that amplifier characteristic parameters MAY be determined by using current gain and VALUES of other circuit components. Hybrid methods had the following advantages:

Value of circuit components are easily available and

The procedure followed is quite simple and easy to understand.

Let train A is moving ALONG positie x axis with vel = +V

train B along NEGATIVE x axis = -U

vel of train A with respect B is = V-(-U) = V+U

let S be distance

S=(V+U)3

S=(V + U + U/2)2.5

=> S= (V+3/2U)2.5

get v and u in TERMS of S

then APPLY S=(V-U)t    (now V along and u in same direction v=V-U)

and find t

may be answer 30/4 SECS