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Average SPEED = Total DISTANCE travelled / Total time taken
so, 70 = 200 / Total time taken
and, Total time taken = 200 / 70 = 2.85 hours......(1)
For the first part of the journey:
speed = 50km/h
distance = 100km
time = ?
speed = distance travelled / time taken
so, 50 = 100 / time taken
and, time taken = 100/50 = 2 hours........(2)
For the second part of the journey:
speed = x km/h (supposed)
distance = 100 km
time = ?
speed = distance travelled / time taken
so, x = 100 / time taken
and, time taken = 100/x .......(3)
Now, adding equations (2) and (3) , we get the total time taken for the ENTIRE trip:
total time taken = 2+ 100/x.....(4)
we ALREADY know that the total time taken for the trip is 2.85 hours from equation (1). So, comparing equations (4) and (1) , we get:
2+ 100/x = 2.85
100/x = 2.85 - 2
100/x = 0.85
x = 0.85*100
x = 85 km/h
Thus, the train should travel the next 100 km distance at a speed of 85 km/h.

The process by which an OBJECT or MATERIAL is magnitized by an external magnetic field
HOPE IT HELP!!!!!!
IF MY IS RIGHT THEN PLEASE MARK ME AS A BRAIN LIST!!!!!!

The most TEMPORARY SPEED which is USED can be DEFINED as AVERAGE speed

A vector is described by both directions and magnitude. ex VELOCITY, acceleration, momentum, FORCE.
a scalar quality is only described by magnitude. ex TIME, volume, SPEED, MASS, temperature.

Hii...
Here is your answer..

SOLUTION:-
UNIFORM Acceleration=0(as he STARTS from rest)
Distance=270m
Time=3sec
Acceleration=?

We'll FIND it by using equation,that is:-



Now,
Acceleration=60m/s
Final velocity after 10 sec=


So,final velocity after 10 sec is 600m

Hope it helps uh...✌️✌️✌️

Hello dear

here is your answer

radius of atom can be defined as the DISTANCE between the centre of nucleous and the OUTERMOST shell


hope it will HELP you


please MARK it as brainliest

S=d/TIME
here time is 4 SEC, SPEED is 6
therefore DISTANCE is 6×4
=24m

Let the distance between A and B be x
SPEED ¹ = 50KMPH
THEREFORE time TAKEN = x/50

return journey
speed ²=40kmph
time taken = x/40

total distance travelled =x+x=2x km
displacement =0
average speed = total distance/total time
= 2x/(x/50+x/40)
= 2x÷[ x(40+50)/200]
= 2*200/90
= 45 kmph

In first case no WORK is done since force (mg) is PERPENDICULAR to velocity(man's direction)
in second case work done will be mgh=15×2×10=300J
hence more work in second case

The HEIGHT of the TOWER is100x25=250m

Water ===> steam

●First 0 DEGREE calcious of water convert into 100 degree Celsius of water.

●Now 100 degree Celsius of water convert into 100 degree Celsius of steam. this is total phenomenon.

_____________________

NOW COME ON PROBLEM

●Heat required is GIVEN by

=> Q = (M×L1) + [M×S×(T2-T1)] + M×L2

here


●L1 = latent heat of fusion of water
=> L1 = 334 jule/gm

●L2 = latent heat of VAPORIZATION of water
=> L2 = 2230 J/g

●S = Specific heat of water
=> S = 4.186

THEN

=> Q = (15×334) + [15×4.186×(100-0)] + (50×2230)

=> Q = 5010 + 6979 + 111500

=> Q = 123489 jule _____[ANSWER]

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

DEVIL_KING ▄︻̷̿┻̿═━一

Hey there!

It's GIVEN,

A cheetah is the fastest land animal and it can achieve a PEAK velocity of 100 km per hour up to DISTANCES less less than 500 metres.

We can write 100 km as 27.78 m/s.   [100x1000/60x60]

We know,

Formula to calculate speed:

Speed (v) = Ditance/time (d/t)

∴ Time = Distance/Speed (d/v)

           = 100/27.78

           = 3.6 s

∴ The minimum time it will TAKE to get it's prey is 3.6 second.

Hope it helps You!

V=0
a=-2.5m/s*s
t=10s

v=u+a*t
0=u+(-2.5)*10
0=u+(-25)
0+25=u
25=u

Answer:

2x=20y(−30)

STEP 1: DIVIDE both SIDES by 2.

2x/2=−600y/2

x=−300y

Answer:

x=−300y

Uniform CIRCULAR motion is an ACCELERATED motion consider an object going straight with a constant SPEED it has the direction same and the magnitude of VELOCITY that is speed is same hence it is not set to be accelerated but in a circular motion however the speed of an object CHANGES its velocity get change why because its direction is changing on each instant ok and we know that the change in velocity is the acceleration

The IMAGE will be FORMED BEYOND the CENTRE of CURVATURE.

Hey palak here ☺️☺️

mark as brainlist


Pulses are the edible seeds of plants in the legume family. Pulses grow in pods and come in a variety of shapes, sizes and colors. The United Nations Food and Agriculture Organization (FAO) recognizes 11 types of pulses: dry beans, dry broad beans, dry PEAS, CHICKPEAS, cow peas, pigeon peas, lentils, BAMBARA beans, vetches, lupins and pulses nes (not elsewhere specified – minor pulses that don’t fall into one of the other categories).



Pulses include all beans, peas and lentils, such as:

baked beans.

red, green, yellow and BROWN lentils.

chickpeas (chana or garbanzo beans)

garden peas.

black-eyed peas.

runner beans.

broad beans (fava beans)

KIDNEY beans, butter beans (Lima beans), haricots, cannellini beans, flageolet beans, pinto beans and borlotti beans.❤️❤️❤️

This will happen only if the NATURE of charges are opposite and both the charges are different in their magnitudes...

If charges are like , then Electeic will never be cancel out as E direct in the same direction...it actually gets added up...E ( Electeic field) will be zero only if charges have opposite nature due to opposite nature , Direction of E will be opposite to each other...

and Charges will not be of EQUAL magnitude...If charges are equal in magnitude then E will be non zero...SEE snap

The information is acquired at the DENDRITES of the neuron.
It is CONVERTED into CHEMICAL signals at the synapse.

In that CASE the angle between the two vector is ALWAYS 120 degrees
hope this helps u
all the BEST

Heya your answer FRND!!

It's sapna here!!

___________________________________________________
Question =Define melting point ❓

Answer =The PROCESS in which a solid CHANGES by absorbing heat at a constant temperature is called melting or fusion.

Solid____melting __liquid.

The fixed temperature at which a solid changes into liquid is called melting point.
The melting point of pure ice is 0 degree census at NORMAL atmospheric pressure.
_________________________________________________

Hope it helps you
Thankq

Always keep smiling
✌️sapna

✨BE BRAINLY ✨

A = 2 CM/s^2 ; t = 3 s ; u = 0 m/s

As V = u + a t

so, v = 0 + 2×3 cm/s

so, v = 6 cm/s

Hence the velocity will be 6 cm /s after 3s from the start.

Your Answer ↓↓↓.

⇒ INITIAL velocity (u) = 0 (rest) 
⇒ Final velocity (V)= 36km/ hr 

CONVERTING km/hr to m/sec.↓

v= 36×5/18
= 10 m/s. 

Time ( t)=10s
Using ,

 v= u+at
10 = 0+ a×10

10 = 10a
a= 10/10
a= 1 m/s²

The acceleration of the scooter is 1 m/s².

^_^ ^_^
#BE BRAINLY

D=1/f
f=-25cm
1/f=1/u-1/V
1/V=1/20
Image is at 20 CM

Resistivity won't change.... i.e it will be the same (i.e. P) EVEN if the length is doubled

Because :::

The resistivity of a material depends on its "NATURE" and the "temperature" of the conductor, but "not" on its shape and SIZE.

We are not CRUSHED by the atmosphere's pressure because even our BODY exerts same and opposite pressure so it becomes equal .....

HOPE it HELPS .....

Distrance travelled=1/2×2pi×r
 =pi×r
(SINCE,the distance travelled is circumference of this semicircle)
Displacement=2r
(Since,the shortest distance b/w initial and final POINT is the diameter[d] of the CIRCLE ,d=2r)

d=2r =7*2=14m

If a body is thrown UPWARD with velocity V then the body get maximum height
H=V^2÷(2g)
where , G is the acceleration due to gravity.
as g is constant , the maximum height is proportional to V^2
let H(1)= maximum height of the 1st body
H(2)= maximum height of the 2nd body
V(1)= velocity of the 1st body
V(2)= velocity of 2nd body

then the ratio of maximum height is,
H(1)/H(2) = {V(1)^2}/V(2)^2}
= (2^2)/(3^2)
=4/9

so, H(1) : H(2)= 4 : 9

So that the friction b/ww the road and the suitcase decrease and can be shifted easy from one place to another
hop EIT HELPS U

The PHYSICAL state of WATER at 25 degree Celsius is liquid. the physical state of water at 100 degree Celsius is BOILING point of water and the physical state of water at 0 degree Celsius will MELTING point of ice

The CLINICAL THERMOMETER has a KINK in its capillary TUBE to avoid GOING back of mercury after taking back from the patients mouth.

Time = 20 min = 20×60 s = 1200 s

= 20/60 H = 1/3 h

distance= 3.2 KM = 3.2×1000 m = 3200 m

1. km/min = 3.2/20 = 0.16 km/min

2. m/min = 3200/20 = 160 m/min

3. km/h = 3.2/(1/3) = 3.2×3= 9.6 km/h

4. m/s = 3200/1200 = 8/3 m/s = 2.66 m/s

Because ACCORDING to the FIRST law of MOTION you can be INJURED dear

Because driver put BRAKE and BUSGOES REVERSE and passenger GOES forward

Thank you for asking this question.  A really easy but an interesting question to ASK. 

The biggest advantage that Alternating current has is that AC voltages can be easily and readily be TRANSFORMED to different voltage levels whether its HIGHER or LOWER. Comparing to DC current its really difficult for DC current to adapt over different voltages through a conductor. 

I hope this answer can help you in some MANNER.

F ∝ m / r^2

F1 / F2 = (m1 / M2) * (r2 / r1)^2
F2 = F1 * (r1 / r2)^2 * (m2 / m1)
F2 = F1 * (r1 / (r1/2))^2 * (m1/2 / m1)
F2 = F1 * 4/2
F2 = 2 * F1
F2 = 2 * 20
F2 = 40 N

Force of attraction will BECOME 40 N

Direction of VELOCITY and acceleration are OPPOSITE to each other.
Example: When CAR is decelerating while moving on straight path.

Hope it HELPS u.

Hey mate

tiny bits get ATTRACTED due to the FORCE of attraction b/w baloon and paper as paper have some CHARGE on its BODY which made it to attract.


Hope it helps U ^_^....

BRSINLIST ⭐⭐⭐❤❤