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Answer:

answer is as:

total DISTANCE =20

total TIME= 3

speed=distance /time

therefore:= s=d/t

20/3= will be the answer.

after cancelling CHECK WHETHER the answer is correct or not. as Im not SURE about the answer.

Dear MAHIMA,

◆ ANSWER -

Distance sparrow flew = 125 miles

● Explanation -

Here, length of TRAINS is not given, so that must be assumed negligible.

Trains are moving at same speeds, thus they will crash in the midpoint of TRACK i.e. 200/2 = 100 miles.

Time taken by each train to reach midpoint is -

t = 100 / 40

t = 2.5 h

Sparrow is flying from the time trains start till trains crash. i.e. 2.5 h.

Distance travelled by sparrow in this time -

s = 50 × 2.5

s = 125 miles

Thus, the sparrow flew for about 125 miles.

Thanks for asking..

ANSWER:

The machine which measure MONOCHROMATIC BEAM is called Wavemeter

Answer:

answer is as:

Explanation:

FORCE and FRICTION CAUSES magnetic field

ANSWER:

2×0.7×0.8×10^3

1120 is the answer

Answer:

The MIRROR is the CONVEX MIRROR ..

these mirror are use in the side mirror of a vehicle for the SAFETY propose.

in this mirror the object reflected is closer then the ACTUAL distance between the object and the mirror.

#HOPE IT'S HELPFUL TO U

#BRAINLY

Hi

Explanation:

1.26g/cm^2tokg/m^2​ GRAM centimeter² = 1.26 X 10-7 KILOGRAM meter²

Please MARK me BRAINLIST ✌️

Explanation:

Previous condition,

R =Resisitivity *l/A

Now, L=2l

A=A/2 because length is INVERSELY proportional to A.

New R =Resistivity*2l/A/2=4(Resistivity*L/A)

Thus, resistance inreased four TIMES .

Resistivity is CONSTANT until and UNLESS temrature changes

Answer:

ADVANTAGES OF CONECTING ELECTRICAL APPLIANCES PARALLEL ARE==

1) DEVICES CN HAVE SEPERATE ON /OFF SWITCHES

2)DIFFERENT DEVICES CN HAVE DIFFERENT AMT. OF CURRENT ACCORDING TO THEIR NEEDS

3) IF 1 DEVICE IS DAMAGED IT WILL NOT AFFECT OTHER..

a=kx

u=0

v=v

u=0

t=0

also

a=dv/dt

dv/dt=kx

dv=kxdt

integrating

v-u=kxt

v=kxt

hope this HELPS

ANSWER:

because IRON WHEEL do not GET grip as compared to rubber wheel s

cos30=sin60=√3/2

cos60=sin30=1/2

hope this HELPS

ANSWER:

because FILAMENT has high RESISTANCE than LONG wire

ANSWER:

in 1687 .

EXPLANATION:

HOPE it HELPS U...

Answer:

400m

Explanation:

LET the length of BRIDGE be X m.

distance=speed×time

100+x=72×5÷18×25

100+x=500

x=500-100=400m

hope it HELPS u....

ANSWER:

1A=10^-10m

1NM=10^-9 m

so I A=10^-1m

5800A =5800×10^-1=580NM

Mark it BRAIN LEAST

answer: 2a, where a is side LENGTH of regular HEXAGON.

A particle is projected such that it touches the four vertices of a regular

hexagon of side a symmetrically placed w.rt the path of projectile. we have to find HORIZONTAL range.

do you KNOW about horizontal range, it is nothing but distance covered by particle along horizontal direction.

see diagram, it is CLEAR that horizontal distance = 2 × radius of circle

if side Length of regular hexagon is a.

then, radius of circle must be a.

Hence, horizontal range = 2a

ANSWER:the time of FLIGHT becomes square root 2 times

Answer:. It offers TEMPERATURE RESISTANCE from -450 deg F (-270º C) to 1200 deg F (650º C) in NORMAL atmosphere and from -305 deg F (-188º C) to 2400º F (1316º C) in Vacuum.

Explanation:

Answer:

TUNGSTEN offers a HIGH resistance and donot oxidize at high temperature and also don't MELT easily because its MELTING point is AROUND 3380C

ANSWER:

1 OHM will be the EQUIVALENT RESISTANCE

Answer:

The RATIO of electrostatic to GRAVITATIONAL FORCES between two PARTICLES will be PROPORTIONAL to the product of their charge-to-mass ratios.

ANSWER:

GIVE me BRAINLIEST ANS PLZZZZZZZZ

ANSWER:

it will take 180 minutes or 3hrs

pipe a can fill the TANK in 20 minutes

Pipe B can fill the tank in 30 minutes

and pipe c can empty it in 15 minutes

so EQUATION is 1/20+1/30-1/15= 1/60

1/60 of the tank will be filled in 3 minutes

so tank will be filled completely in 180 minutes or 3 hours

Refractive index:

the refractive index : the value of the constant

for a ray of light passing from air into a particular medium is CALLED the refractive index of that medium

since the refractive index is a RATIO of two similar quantities it has no unit.

refractive index of a medium gives an indication of the light BENDING ability of that medium...

the refractive index ,can also be WRITTEN as ratio of speed of light in the two media .

if answer not help you report it...

Answer:

A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and TIME scales in the physical universe.[1][2]Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in MATHEMATICAL terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of physical phenomena and the analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to RATIONALIZE, explain and predict natural phenomena.[1] Physicists can apply their knowledge towards solving practical problems or to developing new TECHNOLOGIES (also known as applied physics or engineering physics

ANSWER:

give me BRAINLIEST ans PLZZZZZZZ ans is AC

Answer:

0.75 m/s^2

Explanation:

According to the GIVEN question,

u = initial velocity = 5 m/s

v = final velocity = 10 m/s

s = DISPLACEMENT = 50 m

a = acceleration

And we are ASKED to find acceleration of the scooter.

We know,

• v^2 = u^2 + 2as

Putting the values we get,

• 100 = 25 + 2×a×50

• 100a = 75

• a = 75/100

• a = 0.75 m/s^2

Thus acceleration of the scooter is 0.75 m/s^2 .

ANSWER:

I hope it HELPS you please MARK me as brainliest and PLZZZZZZZ follow me

ANSWER:

Which LANGUAGE is this????????~

Answer:

5/4

Explanation:

GIVEN :

H=U²Sin²θ/2g

T=2Usinθ/g

now if we take the RATIO of MAXIMUM height reached to the square of flight TIME:

H/T²=U²Sin²θ/2g/4U²sin²θ/g²

=g/8

If we take g=10 m/s² then

H/T²=10/8=5/4

hope it helps.......

EXPLANATION:

Energy cannot be CREATED or destroyed. (The laws of THERMODYNAMICS state this).

In reality some charge will be transfered to dust and WATER molecules in the air but GENERALLY you can way that the positive and negative charges are constant answer equal between the glass and silk.

we know that distance is inversely proportional to displacement

therefore the GRAPH WOULD 2 parabolas.

for positive acceleration the slope of the PARABOLA will be positive and keep on increasing

whereas for negative acceleration the slope will be negative and the parabola will DECREASES in value.

awwwwwwwww G'night TC BYE ^_^

ANGLE of REFLECTION and angle of INCIDENCE REMAIN the same

Heya Mate.. ♥

Resistance :

Resistance is the hindrance to the FLOW of charge. For an electron, the JOURNEY from terminal to terminal is not a direct route. Rather, it is a zigzag path that RESULTS from countless COLLISIONS with FIXED atoms within the conducting material.

Hope it helps u ♡♡

Answer:

very low because CURRENT will ALSO flows through BULB c.

Answer:

ACCELERATION will become zero

Explanation:

so acceleration will be equal to 0 in 2nd and 3rd EQUATIONS of motion

ANSWER:

The work done on a body moving in a circular PATH is also zero. This is because, when a body moves in a circular path, then the centripetal FORCE ACTS along the radius of the CIRCLE, and it is at right angles to the motion of the body. Thus, the work done in the case of moon moving round the earth is also zero.

Explanation:

ANSWER:

HOPE it HELPS you to DRIVE

ANSWER:

YES when motion of BODY change equal AMOUNTS in equal INTERVALS of time

ANSWER:

CHECK it in GOOGLE for BETTER RESULTS

An isolated SYSTEM is that system in which no external force act on the body. Truly isolated system is not possible in the REAL world but you can consider a mixture of gases enclosed in a CYLINDER to be isolated because the molecules can exert forces on each other but there is no external force on them.

When a body is moving with uniform motion and no external force is EXERTED upon it then you can consider it as an isolated system.

A MAGNET is STRONGEST at the poles.

If any POLE has such MARKING it is the ANSWER.

To be sustainable, electricity systems must recover operating COSTS, invest for the future, provide reliable electricity and MEET environmental and social objectives. Renewable electricity generation is an essential part of a sustainable ENERGY future.

UNIFORM circular motion can be described as the motion of OBJECTIN a circle at CONSTANT speed. As object move in circle it's CONSTANTLY changing its direction in all instances the object is moving tangent to the circle

plz mark as brainlist

ANSWER:

by UNDERSTANDING each and EVERY WORD

Answer

The NUMBER of waves CONTAINED in unit LENGTH of a medium is called WAVE number.

Answer:

By using a simple needle compass

Explanation:

MAGNETISM and electric current are two aspects of the same thing they go hand in hand, Where there is current there is magnetic effect of current,A simple needle compass when taken close to the current carrying CONDUCTOR will get deflected and it's North and South direction will be changed this is due to the presence of magnetic field of the current carrying conductor when it will be taken far APART from the magnetic field of the conductor the needle will again POSITION it according to earth's magnetic poles.This shows that a current carrying conductor does have a magnetic field ASSOCIATED with it.

Answer:

ROLLING of dough into chappitis (uncooked) is reversible change and only shape is changing and there is no change in chemicla COMPOSITION however if the CHAPPATIS is cooked it MEANS it is reversible change and will not come back and due to supply of HEAT their chemical composition partially changes.