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Answer:

FRICTION is the force resisting the relative motion of SOLID surfaces, fluid LAYERS, and material elements sliding against each other

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ANSWER:

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Answer:n=2

Explanation:as we know to find number of division we need to subtract UFP with LFP

SO HER THE UPPER FIXED POINT IS 100°

AND THE LOWER FIXED POINT IS 0°

SO THE VALUE FOR NUMBER OF DIVISION IS 100

NOW 100=10^n

And n= 2

Answer:

12m

Explanation:

Answer:

This makes sense, because our object was placed at a DISTANCE less than the focal length. ... [–5.9 cm and 1.3 cm]—According to our SIGN CONVENTIONS for convex mirrors

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Answer:

Then the distance of the MAN from the MIRROR is. ... mirror of radius of curvature 120CM s TIMES its NATURAL size

Explanation:

Given VALUE of V = 3V and I = 600mA = 0.6A

so Power(P) = VI = 3*0.6 = 1.8 watt

Resistance (R) = P/I^2 = 1.8/0.36 = 5ohm

Energy (E) = P*t = 1.8 * 4 * 3600 = 25920 Joule.

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ANSWER:

This SHOWS that particles of matter have spaces between them. When sugar is added to the water, the sugar the particles ADJUST themselves in the SPACE between the water particles. Hence, we can say that particles of matter have space between them.

ANSWER:

right now because of the ans is a white background ROYALTY of the ans of these QUESTIONS how to live with sir I have ans is a white background

Answer:

2.5 COULOMB-meter

Explanation:

LINEAR CHARGE DENSITY = charge /distance

we know 4CM =0.04m

linear charge density=0.1coulomb/0.04m

=10/4

=2.5 coulomb metre

Answer:

i hope it help u

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Explanation:

MOTION Glossary and TERMS. ACCELERATION - Acceleration is the measurement of the change in an object's velocity. ... Collision - A collision in physics occurs when any two objects bump into each other. Displacement - In physics, displacement refers to an object's OVERALL change in POSITION

Given :-

• a stone is dropped from top of tower

• after 1 s , another stone is thrown vertically downward with a VELOCITY of 20 ms⁻¹

• acceleration due to gravity , g = 10 ms⁻²

To find :-

• After  travelling how long distance, second stone will overtake FIRST stone

Knowledge required :-

• second equation of MOTION

s = u t +  ½ a t²

( where s is the distance traveled , u is the initial velocity , a is the acceleration and t is the time )

Solution :-

Let, second stone overcome first stone after traveling a distance s

Now,

▸Let , time taken by stone 1 to cover distance s be t

▸initial velocity of first stone = 0

▸acceleration due to gravity , g = 10 ms⁻²

so,

Using second equation of motion

 s = u t + ½ a t²

→ s = ( 0 ) t + ½ ( 10 ) t²

→  s = ½ × 10 t²

→ s = 5 t²    ........equation (1)

Now,

▸ time taken by stone 2 to cover distance s will be ( t - 1 ) , it is because stone 2 was thrown after 1 s the first stone

▸initial velocity of second stone = 20 ms⁻¹

▸acceleration due to gravity , g = 10 ms⁻²

so,

Using second equation of motion

 s = u t + ½ a t²

→ s = (20) (t-1) + ½ (10) (t-1)²

→ s = 20 t - 20 + 5 ( t² + 1 - 2 t )

→ s = 20 t - 20 + 5 t² + 5 - 10 t

→ s = 5 t² + 10 t - 15    .......equation (2)

By equation (1) and (2)

↠   5 t² = 5 t² + 10 t - 15

↠  10 t = 15

↠  t = 15 / 10

↠  t = 1.5 s

PUTTING value of t in equation (1)

↦  s = 5 t²

↦  s = 5 ( 1.5) ²

↦  s = 5 × 2.25

↦  s = 11.25 m

Hence,

second stone will overcome first stone after traveling a distance of 11.25 metres.

ANSWER:

VACUUM or FREE space

prism

Explanation:

Answer:

Supplementary UNITS are the dimensionless units that are used along with the base units to form DERIVED units in the International SYSTEM. The class of supplementary contains only TWO PURELY geometrical units, that is the radian and the steradian.

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Explanation:

A body whose momentum is constant MUST have constant velocity. For a GIVEN mass, the velocity REMAINS constant if the momentum is constant....

ANSWER:

i don answer

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Answer:

Reflection is the change in direction of a wavefront at an INTERFACE between two different media so that the wavefront RETURNS into the MEDIUM from which it originated. Common examples include the reflection of LIGHT, sound and water WAVES.

Answer:

HIGH Density Polyethylene ( HDPE ) containers are CORROSION resistant and can withstand high temperatures, be cooled, and reheated again without any significant degradation. But this is not the case with METAL containers

Explanation:

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Effective RESISTANCE = 5*2/5+20 = 10/25 = 2/5 Ω

Voltage = 50 V

We know that from Ohm's LAW,

Current = Voltage/Resistance

I = V/R

I = 50/(2/5)

I = 50*5/2

I = 125 A

Answer:

Explanation:

C. S. Sharma, Love playing with numbers, becoming math enthusiast

Answered September 22, 2019 · AUTHOR has 7.6K answers and 4.2M answer views

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What is the speed in km/hr if a sprinter runs 100 metres in 10 seconds?

First we have to CONVERT meters to KILOMETERS and time in seconds to hour.

1 meter = 1/1000 kilometers

100 meter = 100/1000 kilometers = 1/10= 0.1 kilometer

1 second = 1/3600 hour

10 seconds = 10/3600 =1/360 hour

Now speed = 0.1 km/(1/360) hour

Speed = 0.1 × 360/1 km/hour

Speed = 36 km/hour

Answer Sprinter speed is 36 kilometers per hour or 36 km/h

ANSWER:

its very DIFFICULT......SORRY

Answer:

Mass = 5 kg. g = 9.8 m/s2. Let F be the force of gravity, ... F = (5) (9.8) = 49 N.

Explanation:

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Answer:

Concave MIRROR, as it is CONVERGING mirror.

Explanation:

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ANSWER:

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Answer:

Mechanical Properties of FLUIDS. Obtain an expression for the PRESSURE EXERTED by LIQUID column. Consider a liquid of density ρ in a vessel as shown in figure. ... Thus, the pressure difference between two points separated vertically by height h in the presence of gravity is ρgh.

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Explanation:

Answer:

Relative density is the ratio between density a the SUBSTANCE to density of water at 4 C degree.. As it is a ratio of same physical quantities, hence it has no units, and it is purely a no. So we can conclude that the VALUE remains same for every physical QUANTITY whether it is mass , gravity

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A ball thrown up vertically upwards reaches a certain height in 6 seconds.

We have to find the velocity of the ball with which ball is thrown up.

From above data we have; height (h) is 6 m, final velocity (v) is 0 m/s [ at highest POINT, velocity = 0 ] and ACCELERATION due to gravity (a) is -10 m/s [ as it is against the motion ]

First equation of motion:

v = U + at

Second equation of motion:

s = UT + 1/2 at²

Third equation of motion:

v² - u² = 2as

As we have value of v, a and s. So, using the Third Equation Of Motion i.e. v² - u² = 2as

Substitute the known values in the above formula,

→ (0)² - u² = 2(-10)(6)

→ 0 - u² = -120

→ u² = 120

→ u = 10.95

→ u = 11 (approx.)

Therefore, the initial velocity of the ball is 11 m/s.

Explanation:

simply you have to multiply all these dimensions of aquarium which are given and uu got your result in cubic centimetre...

and after that uu can change from cubic centimetres to cubic metres

Answer:

The relationship between the angle of incidence and angle of refraction is explained by Snell's LAW, which states that ratio of the sine of the angle of refraction and the sine of the angle of incidence is ALWAYS constant and equivalent to the ratio of phase VELOCITIES of the TWO mediums it is PASSING through.

DIGESTION of FOOD

RUSTING of IRON

Answer:

A constant TORQUE acting on a body PRODUCES in it a constant angular momentum

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ANSWER:

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ANSWER:

▪︎ CONTACT FORCE :

= When a PERSON pushes a table, it is REQUIRED to TOUCH the table (directly or indirectly. ... Gravitational force: It is the force which attracts any two objects with a mass.

▪︎ NON CONTACT FORCE :

= The most familiar example of a non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it. 

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Given that,

A STUDENT places four identical beakers on a bench.

Volume of salt WATER in beaker A = 150 cm³

Volume of salt water in beaker B = 100 cm³

Volume of pure water in beaker C = 150 cm³

Volume of pure water in beaker D = 100 cm³

Density of salt water = 1.1 g/cm³

Density of pure water = 1.0 g/cm³

Force :

Force is equal to the mass and acceleration due to gravity.

In mathematically form,

Where, m = mass

g = acceleration due to gravity

Pressure :

Pressure is equal to the force divided by area.

In mathematically form,

Where, F = force

A = area

We NEED to find the force on the surface on a bench

Using formula of force

Where, = density

V = volume

g = acceleration due to gravity

According to definition of force,

WHOSE is the density and volume more then his force will also be more on surface.

So, we can say that when the force will be more then the pressure will also be more.

We need to find which beaker exerts greatest pressure on the bench

Using pressure formula

Whose the density will be greater, his pressure will also be greater.

So, beaker A exert the greatest pressure on the bench

Hence, Beaker A exerts the greatest pressure on the bench.

Answer:

a car is travelling at 20 metre metre long ALONG a ROAD child run out into the road 50 head and the car driver step on the brake PEDAL what MUST the card ration be if the car is to stop just before it reaches the child car is travelling at 20 metre along a road a child run out into the road 15 ahead and the car driver step on the brake pedal what must the card ration be if the car is to stop just before it reaches the child the car is travelling at 20 along a road or Child run out into the road 15 I had and the car driver step on the brake pedal the card

Answer:

0.92 seconds

Explanation:

Given :

• Initial velocity = u = 4 m/s

• Distance TRAVELLED = s = 8 metres

• Acceleration due to gravity = a = 10 m/s²

To find :

• TIME taken by the ball to reach the GROUND

Using the second equation of motion :

S=ut+½×at²

8=4×t+½×10×t²

8=4t+5t²

5t²+4t-8=0

By SOLVING the above quadratic equation, T = 0.92 seconds

The time taken to reach the ground is 0.o2 seconds

Explanation:

GM has said that its shares have a POTENTIAL VALUE for this

EXPLANATION:

हमें मैसेज नहीं आता कृपया हिंदी में सेंड करें

ANSWER: YO

What is the UNIT for AREA ? you just have WRITTEN 2

Explanation:

Answer:

because HANDKERCHIEF is GOOD ABSORBENT of sweat COMING out of the body

Answer:

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Explanation:

silver-grey

Zinc is a chemical ELEMENT with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a blue-silvery appearance when OXIDATION is removed.

I didn't UNDERSTOOD the QUESTION

m=1200kg

u=90km/h

=>90×5/18=25m/s

v=18km/h

=>18×5/18=5m/s

t=4s

Thus,acceleration of the body is------

a=(v-u)/t

a=(5-25)/4

a=-20/4

a= -5m/s²

Thus,change in momentum of the body is------

mv-mu

1200×5-1200×25

1200(5-25)

1200×(-20)

-24000 KG m/s

Thus,the magnitude of force required is------

F=ma

F=1200×(-5)

F= -6000N,or 6000N in the OPPOSITE direction.

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Answer:

Orbital Velocity Derivation. Orbital velocity is defined as the velocity at which a body (satellite) revolves AROUND the other body (earth). The other ways to EXPRESS orbital velocity are as follows: The particle velocity due to WAVE motion. Production of orbital kinetic ENERGY by the electron.

The normal line divides the ANGLE between the incident ray and the REFLECTED ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection. (These two angles are labeled with the Greek letter "THETA" ACCOMPANIED by a subscript; READ as "theta-i" for angle of incidence and "theta-r" for angle of reflection.) The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.