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151.

John is skating along a circular path. He covers 500 m in the first 10 minutes and another 400 meters in the next 5 minutes. Find his average speed. After one round what will be John’s displacement?

Answer»

ANSWER:

Jim Papadopoulos has spent a LIFETIME pondering the MATHS of bikes in MOTION. Now his work has found fresh momentum

152.

3. (a) Two forces p=5N and q=7N are acting on an object in the same direction. Calculate the net force or resultant force acting on an object. S​

Answer»

Answer:

12N

Explanation:

for same DIRECTION, the NET FORCE = a +b

therefore,net force = p+q

=5N+7N

=12N

153.

What is the unit of linear exapnsion coffecient of solid​

Answer»

The Coefficient of linear EXPANSION of the given solid is denoted as a. then for a UNIT is per degree Celsius) in the CGS and in the SI system it is per kelvin K-1.

154.

In the given circuit, B1, B2 and B; are three bulbs connected with a battery of 6 V. (a) What will happen to the glow of the other two bulbs if the bulb B2, gets fused (b) If the wattage of each bulb is 3 W, what reading will ammeter A show when all the three bulbs glow simultaneously. (c) Find the total resistance of the circuit.​

Answer»

ANSWER:

(i) The current in A

1

, A

3

will increase and in A it will be greatest as it is the total of the current FLOWING through the circuit.

The current in A

2

will be zero as the BULB is fused and the circuit breaks at that POINT.

155.

does a force acting on a body always cause a change in its state of motion ? does pressure exerted by liquid increases or decreases with depth? ​

Answer»

ANSWER:

PLZ MARK me as BRAINLEAST and FOLLOW me

156.

10 appliances of gravitational force​

Answer»

Answer:

The force that HOLDS the gases in the sun.

The force that causes a ball you throw in the air to come down again.

The force that causes a CAR to coast downhill even when you aren't stepping on the GAS.

The force that causes a glass you DROP to fall to the floor.

the application gravitational force :

The formation of stars from gravitational attraction between large MASSES of hydrogen and helium gas in outer space.

The fixation of objects and living creatures on bodies supporting or not supporting life.

Skydiving :)

157.

• Write true or false for each of the statementgiven below:1. Kilometre is a multiple of milligram.2. SI unit of time is mean solar day.​

Answer»

Answer:

1. Kilometre is a multiple of milligram. - False

  • 1. Kilometre is a multiple of Millimeter

2. SI unit of time is MEAN SOLAR day. - TRUE

EXPLANATION:

thx

158.

What is the feeling of equal understanding of defeat and victory called?​

Answer»

what is the feeling of EQUAL understanding of DEFEAT and victory ... Pyrrhic victory is the feeling of equal understanding of defeat and victory. Explanation: pyrrhic victory is a type of achievement where the PERSON who have achieved the PARTICULAR THINGS feels happy as well as head.

159.

(b) Find the net force acting in the given figure. 5N 10N 10N 5N​

Answer»

I THINK the NET FORCE will be 30N

160.

Guys please solve this urgent​

Answer»

EXPLANATION:

  1. hourglass
  2. simple HARMONIC motion
  3. TIME PERIOD of the pendulam
  4. equilibrium position
  5. distance time graph
  6. velocity

HOPE IT'S HELP YOU ✌️

161.

Two forces are acting on an object. To find the net/resultant force, the two forces are added when:a. They are acting in the opposite direction.b. They are acting in the same direction.c. Their magnitudes are equal.d. Their magnitudes are unequal.

Answer»

Answer:

Pascaline

Explanation:

Pascaline, ALSO CALLED Arithmetic Machine, the FIRST calculator or adding machine to be produced in any QUANTITY and actually used. The Pascaline was DESIGNED and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644

162.

Find 's', If u=2m/s , v=5m/s and a=10m/s²​

Answer»

ANSWER:

s= 21/20 m.

Explanation:

we \: have \\  {v}^{2}  -  {u}^{2}  = 2as \\  s =   \frac{( {v}^{2}  -  {u}^{2} )}{2a}  \\ putting \: the \: given \: values \\ s =  \frac{21}{20} m

163.

Good morning Army'sNewton's law of motion'sAnswer it fast please Sanna unnie did you get back your fri ends​

Answer»

Answer:

GOOD MORNING ARMY HAVE A BANGTASTIC DAY AHEAD BORAHE

Newton's first law states that, if a body is at REST or moving at a constant speed in a straight line, it will REMAIN at rest or keep moving in a straight line at constant speed unless it is ACTED upon by a FORCE.

164.

The mass of the body is 20 kg. If pull of gravity on mass 1 kg is 10N then find the weight of the child in a) kgf b) Newton​

Answer»

ANSWER:

a) 4000 kgf  B) 4000N

Explanation:

force acting on 1 kg body is 10N

force acting on 20 kg body is (10*20)N = 200N

weight = mass * gravity

weight = 20kg * 200N = 4000 kgf

1 kgf = 1N

so,

    4000N

165.

The density of iron is 10.2 cm⁻³.find the mass in m³of a silver block of mass 12kg​

Answer»

Usually, density will have units of

g

m

L

when dealing with a liquid or units of

g

c

m

3

when dealing with a solid.

The mass has units of grams,

g

.

The VOLUME will have units of

m

L

or

c

m

3

We are GIVEN the density and volume, both of which have GOOD units so all we have to do is rearrange the equation to solve for the mass:

d

e

n

s

i

t

y

×

v

o

l

u

m

e

=

m

a

s

s

volume

×

volume

Density

×

Volume = Mass

10.5

g

c

m

3

×

965

c

m

3

Thus, the

A

g

has a mass of

1.01

×

10

4

g

166.

Convert 300 Kelvin into Celsius scale and 10 degree Celsius into Kelvin scale​

Answer»

ANSWER:

don't EXPLANATION

Explanation:

don't explanation

167.

Sound is produced by a _______ source​

Answer»

ANSWER:

SOUND is PRODUCED by a __sound_____ SOURCE

168.

Molecules vibrate about mean position. gas liquid soild none of these​

Answer»

Answer:

solid

Explanation:

in solid the MOLECULES vibrate ABOU mean POSITION.

as solid do not have space between them and the intermolecular forces of ATTRACTION between them did not allow them to move from THIR position to molecules

169.

Write a short note on flow of heat​

Answer»

Answer:

Heat is a type of ENERGY MEASURED in joules. ... Heat flow is the movement of heat. Heat can flow in a vacuum by a process CALLED RADIATION, which is the transfer of energy through electromagnetic waves. Heat flows in solids by conduction, which occurs when two objects in contact with each other transfer heat between them.

Explanation:

HOPE U HELP THIS....

170.

Which of the following reacts with cold water vigorously? *a. carbonb. sodiumc. magnesiumd. sulphur

Answer»

Answer:

During the reaction between Na and water NaOH is formed and the reaction is EXOTHERMIC and it burns the HYDROGEN gas formed. HENCE, we could see a dancing flame of H above the surface of Na if it COMES in contact with water

171.

When an object is moving along a circular path with a uniform speed it's motion is said to be​

Answer»

Answer:

09 Uniform Circular Motion

When a body (or object) MOVES along a circular PATH, then its direction of motion (or direction of speed) keeps changing CONTINUOUSLY. When a body moves in a circular path with uniform speed (CONSTANT speed), its motion is called uniform circular motion.

172.

The respective ratios of sides of triangle having angles 30degrees,60degrees,90degrees ​

Answer»

ANSWER:

1:2:3 is your answer .

HOPE it HELPS

173.

An athlete is running with a speed of 20km/h how much distance will he cover in 45 mins​

Answer»

Answer:

15kms.

Explanation:

SPEED, s = 20 km/h

Time, t = 45 min. = 3/4 hrs.

Distance COVERED, d = s X t = 20 x 3/4 = 15kms.

174.

A wire is drawn such that its cross sectional area changes from A to A/2. The new resistance of the wire is: (a) 2 times (b) 4 times (c ) 8 times (d) 16 times​

Answer»

ANSWER:

MATHEMATICS in the SELECTIONS from you are

175.

Convert 10ms⁻¹ to km h⁻¹​

Answer»

ANSWER:

  1. CONVERT 10 MS into km
  2. Multiply 10 with 18 / 5
  3. So the ans is 36
176.

State the relation between surface tention of surface energy short answer​

Answer»

ANSWER:

The RELATION between surface tension and surface energy:

Under the ACTION of this force, the movable arm PQ moves towards AB. ... Hence, surface tension = surface energy per unit AREA. Thus, surface tension is equal to the mechanical work done per unit surface area of the liquid, which is also called surface energy.

Explanation:

mark as brainliest if it was helpful

[email protected]

177.

. Ramesh and Sneha drive from Bangalore to Mysore following the same path. They started theirjourney at the same time. If Ramesh drives with the speed of 90km/h and Sneha drives with thespeed of 25m/s. Who will reach earlier? (Show with the help of calculations)

Answer»

Answer:

Explanation:

The CV PRESENTS a full history of your academic CREDENTIALS, so the length of the document is variable. In contrast, a RESUME presents a concise picture of your skills and qualifications for a specific position, so length tends to be shorter and dictated by YEARS of experience (generally 1-2 pages).

Mark me as Brainlist plz

sorry I didn't GET it

178.

An object is moving in uniform motion. How will the three equations of motion change?

Answer»

ANSWER:

The equation of motion is derived based on the NEWTON's laws of motion. And it changes accordingly when an object changes with UNIFORM velocity. GIVEN is that object moves with uniform velocity, that is no change in velocity so there will no acceleration.

Explanation:

179.

21. Planet X is moving around the sun in a circular orbit with uniform speed. It implies that the planet is: a) at rest b) moving with no acceleration c) moving with uniform velocity d) in accelerated motion​

Answer»

ANSWER:

i2jveceeecvcw vwvwwvce W w wvwwvve jshdhbsbbddv EVDV dsshvvdvdddgbsgesggffehe GEV

180.

What is Conduction ? ​

Answer»

Answer:

Conduction is the process by which heat energy is transmitted through collisions between neighboring ATOMS or molecules. Conduction occurs more READILY in solids and liquids, where the particles are closer to together, than in GASES, where particles are further apart.

or

The process by which heat is transferred from the hot part to the cold part of the body through the transfer of energy from one PARTICLE to another particle of the body without the actual movement of the particles from their equilibrium POSITIONS is called conduction.

181.

what is stomata? friends please give some thanks to my top most following please i will return you back​

Answer»

EXPLANATION:

STOMATA are minute OPENINGS FOUND in the epidermis of leaves, stems and other plant organs. Stomata allow gases such as carbon DIOXIDE, water vapour and oxygen to diffuse into and out of the internal tissues of the plant.

182.

Mohit is driving along a straight highway with a uniform speed of 80 km/h. What is his velocity? Justify your answer.

Answer»

Answer:

speed is equal to VELOCITY in MAGNITUDE

velocity = 80 km/ hr

183.

mohit is driving among a straight path with a uniform speed of 80km/h. What is his velocity? justify ur answer​

Answer»

EXPLANATION:

Correct OPTION is

C

x+y

2xy

km/hr

Let the distance between home and school =S km

Time taken to reach school from home =

x

S

hr.

Time consumed to reach home from school =

y

S

hr

Average SPEED =

Total time taken

Total distance

=

x

S

+

y

S

S+S

=

x

1

+

y

1

2

=

x+y

2xy

km/hr.

184.

A bicycle starting from rest picks up a velocity of 50m/s over a time period of 10s .Find the acceleration of the bicycle.pls help . PLEASE DONT ANSWERE ANYTHING inappropriate

Answer»

Given :-

A bicycle starting from REST picks up a VELOCITY of 50m/s over a time period of 10S .

 ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄

To Find :-

Find the acceleration of the bicycle.

 ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄

Formula used :-

a =  \frac{<klux>V</klux> - u}{t}

 ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄

Solution :-

v = 50 m/s

u = 0

t = 10s

First,

Applying the formula.

a =  \frac{v - u}{t}

a =  \frac{(50m \: s - 0)}{10}

= a = 5m  \: s

So,

The acceleration is 5 m/s.

 ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄

Hopes, it's helpful.

ItzNobita5 ^_^

185.

Plz anyone who knows the answer help me

Answer»

EXPLANATION:

sorryyy IDK hsbdbdbdbsbdbsbbsbsbsbd

186.

A car travels a certain distance with a speed of 50 km/h and returns with a speed of 40km/h. Calculate the average speed for the whole journey.Please explain your answer.

Answer»

ANSWER:

AVERAGE speed-here the distances are equal,we have the FORMULA of finding average speed when distance is equal as V1*V2/V1+V2. if we substitute the values here we get 50*40/50+40 which gives 200/90=20/9 kmph which when CONVERTED into m/s gives 8.

Adyasha here

187.

A body starts with the initial velocity of 5 m/s and expiration of 5 m/s^2. Find the distance covered and final velocity of the body in 10 second​

Answer»

ANSWER:

s=300m

v=55m/s

Explanation:

v=u+at

v=5+5×10

v=55m/s

v²-u²=2as

55²-5²=2×5×s

s=300m

188.

A car travels a distance of 100 metre with constant acceleration and average velocity of 20 m/s.The final velocity acquired by the car is 30 m/s,the initial velocity and acceleration of the car is​

Answer»

DISTANCE (s) = 100 m

average velocity (x) = 20 m/s

final velocity (v) = 30 m/s

let initial velocity be U

average velocity = \frac{u+v}{2}

20=\frac{u+30}{2}

40 = u + 30

u = 10

so, initial velocity (u) = 10 m/s

let us take average velocity to be the speed of the car.

time = \frac{distance}{speed}

time = \frac{100}{20}

time = 5 s

let acceleration be a

a=\frac{v-u}{t}

a=\frac{30-10}{5}

a = \frac{20}{4}

a = 5 m/s²

189.

When object comes back to initial position after travelling 90m in 15 second its average velocity is

Answer»

ANSWER:

HELLO sir

Explanation:

aale AAP KESE HO

190.

Is this answer right or wrong ​

Answer»

Wrong

Answer will be , 10 JOULE

Explanation:-

CHANGE to SI unit

first change 10 CM to meter.

= 0.1m

work done= force/displacement

work done= 1/0.1

= 10 joule

191.

A car travels 180 km in 5 hours. Calculate the speed with which it travels. Also findspeed in metre/ second. pla help me with this inappropriate answers will be reported.

Answer»

EXPLANATION:

To solve for SPEED or rate USE the FORMULA for speed, s = d/t which MEANS speed equals distance divided by time.

see attachment.

192.

What force would be required to accelerate a car of mass 120 kg from  5 m/s to 25 m/s in 2 s?​

Answer»

Answer:

1200N

Explanation:

F= ma = m(∆v/t) = 120 × (25-5)/2 = 120 × 10 = 1200N

193.

How 1 dioptre= 100/cm. Plz derivate it.

Answer»

EXPLANATION:

it's a Predefined UNIT U can't DERIVE it.

194.

A piece of coal has a mass of 40 g and volume of 8 cm3. Find its density ini) C.G.S & ii) S.I systempls help pls

Answer»

Answer:

A piece of coal has a mass of 40 g and VOLUME of 8 cm^3

. FIND its density in

i) C.G.S & ii) S.I system

pls help pls

195.

when object comes back to initial position after travelling 90m in 15 second its average velocity is​

Answer»

Answer :-

Zero

Explanation :-

According to the given question, the object has travelled 90m in 15 SECONDS and came BACK to its INITIAL position.

  • Average velocity is DEFINED as the total displacement in a given TIME interval.
  • Here, displacement is equal to zero because the body has returned back to its initial position.

So, in this case

Average velocity = Displacement ÷ Time

⇒ Average velocity = 0 ÷ 15

⇒ Average velocity = 0

Hence, the average velocity is zero.

196.

A space ship is travelling at 20000m/s after 5.0sec the rocket thrusters are turned on at the 55.0 sec mark ,the ship has a velocity of 24000.0m/s what is acceleration​

Answer»

ANSWER:

OKKKK okokokokokokokokooookok

197.

Asphalt 9 leghens what you know about​

Answer»

ANSWER:

ASPHALT 9 is a VIDEO GAME ( ╹▽╹ )( ╹▽╹ )

198.

What is the answer, please help me out thank you​

Answer»

Answer:

1. The primary function of the plasma membrane is to protect the cell from its surroundings.

2. For small multicellular organisms, diffusion across the outer membrane is sufficient to meet their oxygen needs.

Explanation:

1. COMPOSED of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively PERMEABLE to IONS and organic molecules and regulates the movement of substances in and out of cells.

2. Gas exchange by DIRECT diffusion across surface membranes is efficient for organisms less than 1 mm in diameter

199.

Can you please tell which is the correct answer​

Answer»

ANSWER:

d

I THINKING so or OPTION B

200.

A car accelerates uniformly from 18 km/h to 36 km/h in 5 minutes . The acceleration is---a]1km/s²b]5m/s²c]216km/h²d]216m/s²

Answer»

EXPLANATION:

HAR Har MAHADEV