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The VELOCITY at which a body revolves about ANOTHER body, the MINIMUM velocity required to place or maintain a satellite in a given orbit.

THANKS

V²=u²+2as
u=0
s=5m
a=10m/s²
v²= 0+2(10)(5)
v²= 100
v= 10m/s

momentum = MASS × velocity
m=500g
m=0.5KG
p=0.5×10
p= 5kg m/s

1. SHADOWS of objects just opposite to the source.
2. REFLECTION : During reflection ANGLE of incident ray is EQUAL to angle of REFLECTED ray.

★Power of a LENS is the degree of convergence of divergence of light rays achieved by a lens.

**Lens L1 : f1

= +10 cm ; Convex lens

**Lens L2 : f2

= +20 cm ; Convex lens

**Lens L3 : F3

= -10 cm ; Concave lens

★Lens L2 will FORM a virtual and magnified image of an object placed at 15 cm from the

convex lens because concave lens can never form virtual and magnified image of an object and convex lens form such image only when the object is placed between the optical centre and principle focus of the convex lens

MAY THIS HELP U MY FRND!!!!❤️❤️

HII friend,

# ANSWER- 67.5 m

# EXPLAINATION-

# Given-

speed of SOUND in H2 gas = 1350m/s

we KNOW that lower limit of audibility frequency = 20Hz

(Audibility = 20Hz to 20000Hz)

# Solution-

For a sound wave,

Speed = frequency × wavelength

Wavelength = speed/frequency

Wavelength = 1350/20

Wavelength = 67.5m

- Wavelength of sound wave through hydrogen gas at lower limit of audibility is 67.5m.

Hope I was useful...

Electroplating is the METHOD to transfer one ' s METALLIC layer into other ...we would carry out electroplating of copper by the PROCESS CALLED * electrolysis * .

Maximum mass that the scale can read, M = 50 kg

Maximum displacement of the spring = Length of the scale, L = 20 cm = 0.2 m

Time period, T = 0.6 s

Maximum force exerted on the spring, F = Mg

where,g = acceleration due to gravity = 9.8 m/s2

F = 50 × 9.8 = 490 N

∴spring constant, k = F/l = 490/0.2 = 2450 N m-1.

Mass m, is SUSPENDED from the balance  

∴WEIGHT of the body = mg = 22.36 × 9.8 = 219.167 N

Hence, the weight of the body is about 219 N.

At 30 cm awoy from the mirror .
here f=15 so at 2f hi=ho .
HENCE 2f is 30CM.

Answer :-

MOMENTUM is conserved for the system

Pm = PM

( in opposite directions )

mV1 = (m+M) V2

k.E = 1/2 mv^2 ( M' ,= m + M )

so,

√2KmM = √2Km'M'

Km / KM' = M'/m

= KM' = m/ (m+M) ×Km ---------------(I)

Now kinetic energy will be Changed in potential energy

CHANGE in potential energy = MG (r-R) ------(II)

using equation (I) and (ii)

1/2 MV^2 = m/ ( m+m )×(mg (r-R))

V^2 = 2m^2g (r-R) / M ( m+M)

V^2 = 2×10×1.1-.1 / 2×3

=> V = √10/3 Ans.

=============

@GauravSaxena01

Firstly, we have to draw the pulse wave (see ATTACHED diagram).

If HAND passes 6 times from the mean position in one second, then we know that string CREATES 3 wave lengths (λ) or 3 cycles after 1 second.

That means frequency (F) of the wave is 3 Hz.

Now we can use below equation to calculate the value of wave length.

V = fλ (V = velocity of the wave)

λ = V/f

  = (3m/s)/3 = 1 m

If λ = 1M, the point which have 3m distance is located at no.(6) (in the diagram).

to reach its upper extreme ----> have to travel 3λ/4 distance

time to travel 3λ = 1 second

time to travel λ = 1/3 seconds

time to travel 3λ/4 = (1/3) * (3/4) seconds

                               = 1/4 seconds = 0.25 seconds

Answer :0.25 seconds

H2+CuO ----- CU(OH2)

no work is DONE because force applied is PERPENDICULAR to gravity

w = f s cos 90

= f s 0

= 0

Brass an ALLOY of copper and zinc (Cu,Zn).

Bronze an alloy of copper and TIN(Cu,SN).

Let us assume that , if the level of narrow tube goes down by then, WIDER tube goes up by
then, volume DECREASES in CASE of narrow tube = volume increases in case of wider tube

Let RADIUS of narrow tube is r
then, radius of wider tube is 4r

so,

.......(1)

now, pressure at point A = pressure at point B


because specific DENSITY , s =
so,

A MAN climbing on a hill possess both energy because POTENTIAL energy is an stored energy and KINETIC energy is an energy TAHT a man has because of its motion.

your sourrounding should be GOOD and no TIME PASS

The DIRECTION of MAGNETIC field at any location on the Earth's Surface is commonly specified in terms of a 3-dimensional vector.

We use a compass first to DETERMINE the direction of Magnetic North.

The angle of the magnetic north relative to the true north is called the Declination or the Variation.

When we are FACING the Magnetic North, the angle that field makes with the Horizontal is called the Inclination or Magnetic dip.

The Intensity of this field is proportional to the FORCE it exerts on a magnet.

Kindly see the ATTACHMENT.

Radius of gyration or gyradius REFER to the distribution of the components of an object AROUND an axis. In TERMS of mass moment of inertia, it is the perpendicular distance from the axis of rotation to a POINT mass (of mass, m) that gives an equivalent inertia to the ORIGINAL object(s) (of mass, m)

Hii dear,

You have posted incomplete question. I have seen similar question somewhere.

# Complete question-
In a closed ORGAN pipe of length 105 centimetres standing waves are setup corresponding to 3rd OVERTONE. What distance from the closed end a PRESSURE NODE is formed?

# ANSWER- 45 cm

# Explaination-

# Given-

L=105cm

# Formula-

For closed organ pipe with length L,

3rd overtone is given by,

λ=4L/7

From closed end pressure node is formed at 3λ/4.

3λ/4 = 3×4L / 7×4

3λ/4 = 3L/7

3λ/4 = 3×105/7

3λ/4 = 45cm.

Hope that was useful...

# Answer-

2√2 CM

# Solution-

SHM along a line of 8cm HENCE maximum displacement (amplitude) on each side will be 4 cm.

We have to find the displacement x for which kinetic energy=potential energy

Total energy(E)= potential energy+ kinetic energy.

Hence potential energy = kinetic energy =(1/2)E=(1/2)(1/2)kA^2

where, k is FORCE constant and A is amplitude.

Next, potential energy at displacement x is(1/2)kx^2.

Therefore

(1/2)kx^2=(1/2)(1/2)kA^2

x=A/√2

We have A=4cm

x=4/√2

x=2√2 cm

KE=PE when displacement from mean is 2√2 cm.

Equivalent RESISTANCE of resistors in SERIES : R = R1 + R2 + R3 + ...

Answer:

In physics, motion is the change in the position of an object over time. Motion is MATHEMATICALLY described in terms of displacement, distance, velocity, acceleration, speed, and time. The motion of a body is OBSERVED by attaching a frame of reference to an OBSERVER and measuring the change in position of the body relative to that frame.

If the position of an object is not changing relatively to a given frame of reference, the object is SAID to be at rest, motionless, immobile, stationary, or to have a constant or time-invariant position with reference to its surroundings. As there is no absolute frame of reference, absolute motion cannot be determined.[1] Thus, everything in the universe can be considered to be in motion.[2]:20–21

Motion applies to various physical SYSTEMS: to objects, bodies, matter particles, matter fields, radiation, radiation fields, radiation particles, curvature and space-time. One can also speak of motion of images, shapes and boundaries. So, the term motion, in general, signifies a continuous change in the positions or configuration of a physical system in space. For example, one can talk about motion of a wave or about motion of a quantum particle, where the configuration consists of probabilities of occupying specific positions.

The main quantity that measures the motion of a body is momentum. An object's momentum increases with the object's mass and with its velocity. The total momentum of all objects in an isolated system (one not affected by external forces) does not change with time, as described by the law of conservation of momentum. An object's motion, and thus its momentum, cannot change unless a force acts on the objects.

(a) No, the amount of salt and SUGAR dissolved in water will not be the same
at the same TEMPERATURE.

(b) On COOLING the content of the beakers, crystals of salt and sugar will appear. This is because solubility of a SOLID decreases with decrease in temperature

F=force

M=mass of the object

A=accleration

F=M*A

here SINCE ACC is DUE to gravity REPLACE A by g

so F=M*g

⭐hey mate!⭐

_________________________________________________________

ENERGY possesed DUT to the motion of the body is called KINETIC ENERGY

[K.E = 1/2MV^2 =P^2M =1/2PV]

✓✓. Rest and motion are referential state so,

K.E will DEPEND upon the location of observer.

Hope it will HELP you..

#phoenix

30 × 30 × 10^-4 × H × g = 21.6

Let h = the DEPTH of immersion then

H= 24

Answer- c)24

intensity after first POLARISER = 32/2 = 16 W m-2

let angle between 1st and 2nd polariser is THETA so intensity = 16 {cos(theta)}^2

angle between 2nd and 3rd = 90-theta

so intensity   3 Wm-2 = 16 {cos(theta)}^2 * { cos (90-theta)}^2

3 = 4 { 2COS (theta) * sin(theta) }^2

3/4 = { sin (2*theta)}^2

squrt(3) / 2 = sin (2*theta)

sin 60 = sin (2*theta)

2*theta = 60

theta = 60/2 = 30 degree

angle is of 30 degree between first two polarisers.

In some cases we cannot see vibration it is because we know that sound is a mechanical energy BABE PRODUCING by the vibrating object it is a form of energy and energy can be visible to us this is why we can't see sound as WELL as vibration MADE by it

卄乇ㄚ 千尺丨乇几ⅅ


⊙ It is defined as 1 mole.


⊙ It's value is



⊙ It is NAMED after the scientist Amego AVOGADRO.

i) The mirror USED by Sunita is Concave mirror as she GETS her image of face   as erect and enlarged.

Only concave mirrors can PRODUCE virtual  and erect image when object is placed in between POLE and FOCUS.

ii) As a distant object which is regarded as placed At infinity,  image is formed well defined and sharp at 35cm.

hence focal length of the mirror is 35cm.[ Because concave mirror will form image at focus when object is placed at infinity.]

Ciliary muscles is responsible forpower of ACCOMMODATION in eyes.accommodation of eyes is nothing but the ability of the eye to change its focal length to concentrate on MANY THINGS. ciliary muscles which CONTROL the largening and shortening of lens,HELP for it

Sometimes you MAY find that although the liquid CONDUCTING YET the bulb does not GLOW. This can be because :-
1.It can be that the liquid's conductivity is that much low that it doesn't make the bulb glow.
2. It can also be that the bulb is fuesed.
If it was helpful then pls mark as brainlist.......

Loudness DEPENDS on AMPLITUDE of the vibrating BODY so when amplitude increases loudness ALSO increases.
pitch depends on frequency of the vibrating body so when frequency increases pitch also increases.

The LIFE on EARTH will be DESTROYED.

Answer C is the ri8 one

HOPE it helps you !!

But m sorry to say you that it's clearly SEEN in your pic

M sorry for that

Hope you UNDERSTAND!!✌✌

ANSWER:

ýèß þhè àñßwèŕ ìß þhè ßàmè àß àbòvè

The defet of his vision is the student is suffring from hypermetromia when he is suffering when he is sitting on FIRST DESK and miuopa when he is on LAST desk

We know there are usually three types of heat used in everyday life to understand physical phenomena.
Heat , LATENT heat of FUSION and latent heat of vaporisation.

Q = mS∆T , when substance doesn't change its PHASE , then it must be change their temperature. then, this temperature is directly proportional to supplied heat .

so, when we supply heat to ice , ice increase there remember from - T to 0°C .
you can see variation of temperature and heat in graph .

when substance change its phase at constant temperature is used new terms e.g,. latent heat. ice at 0°C change into water at this temperature. heat supplied to ice is known as latent heat of fusion.
here , in case of charging phase , heat is independent on temperature.
so, graph is parallel to x axis as shown in figure.

now, if we supply heat to water, temperature of water increase . then, again heat is directly proportional to temperature.

now, I think you understand how we plot graph of ice between heat and temperature.

ANSWER:

ITZ OPTION 3)..................

ANSWER:

THE AVERAGE VALUE of AC is0.637

ANSWER:

your ANWER is all of the above