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ANSWER:

which stone should be thrown at 70 DEGREE ANGLE of 60 degree angle then only to be at that PLACE

Answer:

2. A VECTOR which is not exists

Explanation:

I am not SURE SORRY

ANSWER:

12N is the answer I THINK for this QUESTION

ANSWER:

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Answer:

45 degree

Explanation:

On SUMMATION of two vectors and angle between them we get the same as magnitude of one of the VECTOR

If we simply add 2 vectors and MULTIPLY with the cosine of the angle between them we get resultant vectors

By taking TITA as 45 degree we get the same magnitude

EXPLANATION:

statement :

Snell's LAW is DEFINED as “The RATIO of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light .

formula :

Diagram :

Answer:

Its velocity becomes u/2 after penetrating 3 cm in the block. We can CALCULATE the DECELERATION of the body USING these. Now, we can calculate the distance the body travels till it comes to REST. Therefore, the body PENETRATES 1 cm (4-3=1cm) more before coming to rest.

ANSWER:

MINUTE hand of clock is 1m long

distance covered by tip of the minute hand from 3 to 3:30 is 30m

Answer:

Magnetic INDUCTION due to infinitely long straight conductor carrying current: XY, is an infinitely long straight conductor carrying a current I(Figure).

P is a point at a distance a from the conductor. AB is a small element of length dl. θ is the angle between the current element Idl and the line joining the element dl and the point P. According to Biot-Savart law, the magnetic induction at the point P due to the current element Idl is.

dB=

4π

μ

o

r

2

Idl⋅sinθ

......(1)

AC is drawn perpendicular to BP from A.

∠OPA=ϕ, ∠APB=dϕ

In ΔABC, sinθ=

AB

AC

=

dl

AC

∴AC=dlsinθ ..........(2)

From ΔAPC, AC=rdϕ .........(3)

From equations (2) and (3),

rdϕ=dlsinθ ............(4)

Substituting equation (4) in equation (1)

dB=

4π

μ

o

r

2

Irdϕ

=

4π

μ

o

r

Idϕ

.............(5)

In ΔOPA, cosϕ=

r

a

∴r=

cosϕ

a

..........(6)

Substituting equation (6) in equation (5)

dB=

4π

μ

o

a

1

cosϕdϕ

The total magnetic induction at P due to the conductor XY is

B=

−ϕ

1

∫

ϕ

2

dB=

−ϕ

1

∫

ϕ

2

4πa

μ

o

I

cosϕdϕ

B=

4πa

μ

o

I

[sinϕ

1

+sinϕ

2

]

For infinitely long conductor,

ϕ

1

=ϕ

2

=90

o

∴B=

2πa

μ

o

I

If the conductor is places in a medium

Answer: please click on the brainlieast

THEOREM: The RATE of change of the TOTAL momentum of a system of particles is equal to the SUM of the EXTERNAL forces on the system

Explanation:

Answer:

1/2=2 /1 =3 2/3=7702939698 88 5

EXPLANATION:

This is the explanation.

Answer:

ACTUALLY there is no CIRCUT ,then for whta we should find EQUIVALENT resistance

Explanation:

All of US know that the like charges REPEL each other and unlike charges attract each other. Some work is always involved in moving a charge in the area of ANOTHER charge. What makes the charge to flow? WELL, this BASICALLY happens because of the ‘Electric Potential

Answer:

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Explanation:

the process in which energy is emitted as particles or WAVES. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and absorbed by ANOTHER body. the energy transferred by these PROCESSES.

EXPLANATION:

ANSWER is in BOOK

Answer is in book

Answer:The definition of the ampère is NOT derived from time and charge. Instead, the coulomb, as the COHERENT SI UNIT of charge is derived from the ampère and second as C = A · s. ... Even more so when we have a fundamental CONSTANT - the ELECTRONIC charge that it would seem sensible to base the unit on.

Explanation:

Answer:

Actually our RETINA have protecting layers which doesn't let our retina face any problem..

there are ciliary muscles in our eye, which helps our eye to dialate and contract.

As per ur bio plz follow me and THANK my answers ❤❤❤

(Intraocular lens (IOL): After CATARACT surgery, the cloudy lens will be replaced with an intraocular lens (IOL). The lens naturally protects the eye from almost all ultraviolet light and some BLUE light. There are types of IOL that can protect the eye and retina from blue light.)

Answer:

ME

Speed Distance Time Questions, Worksheets and Revision

Level 4 Level 5

GCSE Maths Predicted Papers

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What you need to know

Speed Distance Time

Speed is a measure of how quickly something MOVES, so it is calculated by dividing distance by time.

Make SURE you are happy with the following topics before continuing.

Rearranging formulae

Units and conversions

Speed Distance Time Formulae

Speed, distance and time are all related by the formulae,

s = \dfrac{d}{t}s=

t

d

where SS is speed, dd is distance, and tt is time. You can rearrange this formula to find the other two, for example, if we multiple both sides by tt and divide both sides by ss, we get,

t = \dfrac{d}{s}t=

s

d

So, we can calculate the time by dividing the distance by the speed.

Typically, we measure distance in metres (mm), kilometres (kmkm), or miles, and we measure time in seconds (ss), minutes (mins) or hours (hh). As a result, the units we USE to measure speed are compound units e.g m/sm/s or km/hkm/h

Explanation:

I HOPE it helps you

Answer:

always THOUGHT of current as the time DERIVATIVE of charge, dqdt. HOWEVER, I found out recently that it is the ampere that is the BASE unit.

Explanation:

I HOPE it helps you

ANSWER:

so we have to FIND HEIGHT I.e. s

s =at+1/2at^2

the BALL is going up MEANS u is 0

ANSWER:

When a horse pull a cart, the force that HELPS the horse to move FORWARD is the force exerted by the FOOT of the horse on the ground, so that the force can pull the cart.

Answer:

you can see, case (ii) ; here both the

object and the image distances are

30cm .but we know this is possible only

case when object kept at 2f,so, 2f =

30cm >f= 15cm

(b) USE LENS formula for finding incorrect

observations.

1v-1/u = 1/f

see last observation (v)

u =-15

f +15

then, 1/v = 1/15 - 1/15 = 0 = 1/co =>V = o

but v 70cm is given HENCE, observation

(v) is wrong.

(c) obviously case 3, in this case size

of image is equal to size of object due

to image distance distance is equal to

object distance from pole.

EXPLANATION:

हैप्पी जी लकी जी सो ₹100 हफ्ते के लकी जी सो सॉरी जयति जयति है

Answer:

anything which occupies space and has mass is CALLED MATTER all the things which we see AROUND us is method example a table CHAIR all are MADE up of matter

Explanation:

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ANSWER:

vlc c to if dj oucffgguokufdddfujgxy the human RIGHT this is the CONNECTION between the human right this is the connection between the human right this is the connection between the human right this is the connection dy ☺️ the TWO parents and questions or if dj of a boot the r ydu the two parents to be a good but I have to do the needful for

Answer:

122.5 m

Explanation:

Given Initial velocity of ball, U=49 m/s

Let the maximum height reached and time taken to reach that height be H and t respectively.

Assumption: g=9.8 m/s       holds true (maximum height reached is small compared to the radius of earth)

Velocity of the ball at maximum height is zero, v=0

Given Initial velocity of ball, u=49 m/s

Let the maximum height reached and time taken to reach that height be H and t respectively.

Assumption: g=9.8 m/s  

2

 holds true (maximum height reached is small compared to the radius of earth)

Velocity of the ball at maximum height is zero, v=0

v^2 - u^2 = 2aH

0 - (49)^2 = 2*(-9.8)*H

⟹H=122.5 m  

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Answer:

[ω] =

EXPLANATION :

dimension of SIN ( α ) =  0

so from the GIVEN equation ,

dimension of sin( ωt) =

[ω] [t] = 1

so

[ω] = 1 / [T]

[ω] =  

ANSWER:

WEIGHT = 98kg

Explanation:

Because, as we know weight = mass × gravity.

Mass = 10 kg and gravity = 9.8 (you can ALSO take 10).

so, w = 10×9.8

= 98 kg.

The MASS is m = 0.2Kg and ENERGY is E = 1.05kJ = 1.05 × 1000J

Whole energy of the EXPLOSION will be delivered to the shell in FORM of kinetic energy so if the velocity be v then

ANSWER:

giggucyvcifhih

Explanation:

Hahwhhejehhshahheiehf hsueuwuehdu

Answer:

SPECIFIC gravity is WEIGHT of the item (in air) / Weight of water displaced when the item is placed in water = the weight in air/(weight in air - weight in water)

200N/(200N - 120N) = 200N/80N = 100/40 = 10/4 = 5/2 = 2.5 (which incidentally is quite possible for a stone. The person who ASKED the question came up with reasonably realistic numbers).

Explanation:

As the Newton is a measure of force, and therefore GIVEN by Mass * Acceleration (second order speed, distance / time), the definition ultimately reduces to a form that is derived from only Mass, Length and Time. Explanation: The ampere was chosen as a base UNIT, because it is easily MEASURED WHEREAS the COLOUMB is not.

Given ,

Object height (ho) = 2 cm

Magnification (m) = -3

As we know that ,

The RATIO of height of IMAGE to the height of object is called LINEAR magnification

It is denoted by " m "

It has no SI unit and dimensional formula

Thus ,

-3 = hi/2

hi = -6 cm

The negative sign of height of image shows the image is real and inverted

∴The nature of image is real and inverted

Answer:

One newton equals a force that produces an acceleration of one METER per second (s) per second on a one KILOGRAM (KG) MASS. Therefore, one joule equals one newton•meter.

Explanation:

ANSWER:

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Explanation:

All rods are of identical length and cross-section. If the end A is maintained at 60oC and the junction E at 10oC, find the effective THERMAL Resistance. Given the length of each rod = l, AREA of cross-section = A, CONDUCTIVITY of x=K and conductivity of y=2K

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EXPLANATION:

for TIR LIGHT should TRAVEL from DENSER to reare MEDIUM

ANSWER:

• (C) is the answer of your QUESTION

Answer:

Both the proton and the neutron are COMPOSITE particles, meaning each is composed of smaller parts, NAMELY three QUARKS each; although once thought to be so, neither is an elementary particle. A proton is composed of two up quarks and ONE down QUARK, while the neutron has one up quark and two down quarks.

Explanation:

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Answer:

I THINK answer is OPTION option d

PLEASE give me a BRILLIANT answer

ANSWER:

matter is any substance that has mass and occupy space example-apple,PERSON,table and COMPUTER

hello friend...!!

⇒ according to the question, we should calculate the distance penetrated by the bullet into the BLOCK

given that :

⇒ u = 150 m/s

⇒ v = 0

⇒ t = 0.03 sec

⇒ m = 10 g = 0,01 Kg

we know that , S = ( v² - u²) / 2a ------------( 1 )

we should calculate acceleration , v = u + at

a = ( v - u ) / t

a = ( 0 - 150 ) / 0.03

a = -5000 m/s² ---------------( 2 )

substituting equation ( 2 ) in ( 1 ) gives ,

S = { 0 - (150)² } / - ( 2 x 5000 )

S= 22500 / 10000

S = 2.25 m

therefore, the distance penetrated by the bullet is 2.25 m

to calculate FORCE ,we know

F = m x a

⇒ F = 0.01 x 5000

⇒ F = 50 N

the force exerted by the wooden block on the bullet is 50 N

__________________________________________

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ANSWER:

Hey mate,

Your answer is as FOLLOWS:

On heating the paper gets WET in the presence of water the cup gets heated and the water becomes hot as the cup gets heated. it can be DONE by using a burner.

Explanation:

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ANSWER:

A common or traditional definition of matter is "anything that has MASS and volume (OCCUPIES SPACE)". For example, a car would be said to be made of matter, as it has mass and volume (occupies space).

*An apple.

*A person.

*A table.

*AIR.

*Water.

*A computer.

*Paper.

*Iron.

Explanation:

Answer:

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EXPLANATION:

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I THINK there is SOMETHING WRONG

ANSWER:

The LOCUS of a POINT EQUIDISTANT from a FIXED point is a Circle.

Hence, this is the answer.



ANSWER:

mass is a SCALOR QUANTITY, but acceleration is a vector quantity . ... So, FORCE is a vector quantity ,,as it has both , MAGNITUDE and direction..

Explanation:

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Answer:

A QUANTITY which does not depend on direction is CALLED a scalar quantity. Vector quantities have two characteristics, a magnitude and a direction. Scalar quantities have only a magnitude. When comparing two vector quantities of the same type, you have to COMPARE both the magnitude and the direction.

Explanation:

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