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No, Average SPEED of a moving body never be zero.
Because average speed =distance/time

and we KNOW that distance TRAVELLED by a moving body cannot be zero.
so average speed never be zero.

BUT AVERAGE VELOCITY CAN BE ZERO.

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We KNOW that:
E=GM/r²
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In Newton 3RD law EVERY action there is EQUAL and opposite REACTION in the Newton's third law if ONE object exert a force on another body then we get same strength but in the opposite reaction

Yes.
Since the gravity AFFECT and FORCES the vertical component of the PROJECTILE only and not the horizontal ONE, HENCE there is 0 force acting on the horizontal component of velocity

That's why it is constant.

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yes, a BODY can be in STATE of rest as well as in motion at the same time. A PERSON moving in bus is in state of motion with respect to the OBSERVER outside the bus i.e. on the road,but he is in state of rest with respect to the observer TRAVELLING in the same bus

Rowing a boat
a man walking on the ground
a PERSON is MOVING FORWARD during swimming

the ANSWER is B) CANDELA

Water KEPT in the cup will not EVAPORATES fast because it has LESS surface AREA than does the water kept in which will EVAPORATE faster as it has more surface area than a cup

By EQUATION of MOTION

The ratio of the quantum CHARGE CARRIERS to the NUMBER of photons is TERMED as quantum efficiency.

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You must USE SIN i÷ wind formula

Impulse is defined as the change in momentum. It is vector QUANTITY and DIRECTED along the direction of force. It's SI unit is Ns. It is measured as the PRODUCT of average force and time.

I vector = F vector t

M=12kg
g=10
w=mg
=12×10
= 120 NEWTON

22500j/g of ENERGY is RELEASED

When a photon hits the METAL surface, the photon's energy is absorbed by an ELECTRON in the metal. ... FURTHERMORE, the kinetic energy of the photoelectrons was proportional to the light FREQUENCY. The relationship between photoelectron kinetic energy and light frequency is shown in graph (a) below.

Eye of a cyclone- eye of he cyclone is that PART from which the cyclone ORIGINATE . TORNADO - it is a type of air which originate on earth surface and it moves in high speed and tornado is RAPIDLY rotating column of the air that is in contact with both the surface and the cloud

At BOTTOM PARTICLE will be in ground
and at top of the graph it will THROWN to up

Yes, THEORETICALLY mass INCREASES as the velocity of an OBJECT is increases.

however such speed could NEVER be attained

this result comes from

mass of moving body = mass in rest / sqrt (1 - (v^2 / c^2 ) )

No.. refractive power depends on the medium. so it is not affected by HEIGHT or DEPTH of medium generally. however during very hot and cold days a mortgage is seen on roads and in air due to slight change in temperature of different layers of air particles. Refractive of a medium SLIGHTLY CHANGES with temperature.
as we go deeper in some liquid medium, then optical density increases with pressure so, refractive power may also change. the change is negligible for practical purposes however.

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Your QUESTION are not COMPLETED

Gamma ray burst is a source of a particular type of cosmic rays.

Cosmic rays are high-energy particles arriving at EARTH from sources that lie outside it. What exactly is "high energy" in this definition is not well DEFINED. Practically any stable particle can be a cosmic ray. Thus you may have photons (gamma rays), electrons, protons, nuclei, neutrinos... 

The most common type of cosmic rays detected on Earth are actually protons. It has to do with the fact, that a high energy proton can TRAVEL very large distances without losing significant energy. High energy electrons relatively easily lose energy in collisions with CMB photons (reverse Compton scattering). Highest energy gamma rays can also collide with visible photons, or even microwave background and produce electron-positron pairs. These effects reduce the DISTANCE from which those types of cosmic rays can reach us. Neutrinos could be abundant, but are difficult to detect, mostly they pass the Earth without any interaction. This leaves protons and light nuclei as the main component of cosmic rays detected on Earth.

Be warned, that sometimes the name "cosmic rays" is used for particles that are detected on the surface of the Earth. The majority of those particles are actually muons that have been produced in the Earth's atmosphere by collisions between high energy cosmic rays and nuclei of atmospheric GASES,  so they are not of cosmic origin, they are just secondaries

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He covered 6.5 round in 2 minute and 10 sec i.e. 130 sec

now
》total distance covered is---->> 6•5×2pi R
》displacement is ------->> 200 m

☆ average SPEED = distance / TIME
= 6•5×2pi R / 130
= 6•5×2pi×100 / 130
= 10pi m/s

☆ average velocity = displacement / time
= 200/130
= 1.53 m/s

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M/kg2 in CGS = CM / g2
1 M = 100 cm
1kg2 = 10^6 g2

M/kg2= 100cm/1000000g2
M/kg2 = cm/g2 * 10^-4
30m/kg2 = 30*10-4 cm/g2
=0.003cm/g2

Le H is the maximum height. LET h is the height above the ground at which both P.E and K.E are equal

∴ T e at the point p = K.E + P.E

⇒ K.E = mgH - mgh = mg [H - h]

∴ P.E / K.E = mgh/mg[HH]

As K.E = P.E

∴ h / H - h = 1, H – h = 2h …(1)

When the body is projected upwards with VELOCITY u it reaches a maximum height H

∴ H = u2/ 2g

When the body is projected vertically upwards with double the velocity then it reaches a maximum height H1

∴ H = (2u)2/2g = 4u2/2g = 4H………..(2)

∴ The ratio of P.E and K.E at the same point ‘P’ = P.E / K.E = mgh/mg[H1-h]

∴ P.E / K.E = h/4[2h]-h

= 1/7

Or, 1:7

Hope this helps you buddy :)

ACCORDING to the question,

WIEGHT of the body = 1500 units.

area = 500 SQUARE units.

Now, we know the basic formula for CALCULATING Pressure i.e. Pressure is Force per unit area P = F / A; where P = Pressure on the object, F = Force, A = Area on which force acts.

So, you may think the value of force isn't given. But the most important point is the weight is acting downwrads and creating the force vertically downwards.

Thus Force = 1500 units. Area = 500.

Therefore, Pressure = 1500 / 500 = 3 units. (Ans)

Wind are SLOW moving air
storm are fast moving air
cyclone are LOW air PRESSURE belt SURROUNDED by high air pressure

HEY MATE!.......HERE IS UR ANSWER.........


♧SHARP knife cuts better because it CATCHES less friction on a sharp edge than it would on a blunt one.

♧it catches less friction on a sharp edge than it would on a blunt one. it makes it glide through faster, with less resistance caused by the force of friction.

♧you're also less likely to slip and CUT yourself on a properly sharpened knife, because the finer edge on it ALLOWS for better stability after the first couple milimeters of depth.


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NEGATIVE to POSITIVE DIRECTION

Weight is ALSO known as force bcoz W = mg. and F = mg . so

P = F/A
20000 = W/0.04
20000*0.04 = W
800N = W

A ray will come and REFLECT and. RETURN with same ANGLE is CALLED law of reflection...

The NAIL needs to be driven into something to be effective. To drive a nail into something, it must EXERT sufficient pressure on what it's trying to go into. Pressure is FORCE over AREA, so by having a point on one end, the area is minimized, so that LESS force is required to drive the nail in.

So EHAT is the QUESTION?

So.. where is the QUESTION?

The most important topics are
1) magnetic FIELD lines and its properties
2) right hand thumb rule (Maxwell's corkscrew rule)
3) CURRENT carrying solenoid
4) Fleming's right hand rule
5) electric motor
6) Fleming's LEFT hand rule for induction current
7) electric GENERATOR

Hii
yes when we SPEAK the VOCAL CORDS vibrate
hope this HELPS you

YES, there is no REASON they cannot be PARALLEL.

HEYA MATE,

HERE IS UR ANSWER.

Thanks for ASKING this QUESTION.

In non-uniform circular motion an object is MOVING in a circular path with a varying speed. Since the speed is changing, there is tangential acceleration in ADDITION to normal acceleration. So there is a uniform circular motion in a circular path.

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