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ANSWER:

yes it is possible to MAKE time MACHINE

EXPLANATION:

direct FORMULA to FIND maximum height is 2u/g

u=9.81m/s

g=9.8m/s^2

2×9.81/9.8=2.002 MTR

Answer:

2.08

Explanation:

=50/24

= 2.08

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RECOIL VELOCITY of the GUN = (100/1000×100)/20

= 0.5 m/s

The distance between lens and mirror is SHOWN with the assumption when the image FORMED on itself.

• Let R be the distance at which the image formed.
• μ be the refractive index
• H be the height.
• Let d be distance at which the lens and mirror image formed at itself.
• Now derive RELATION
• μ(d) + h= R
• d=(R-H)/μ
• if H<
• then d=R/μ
• That is the relation

ANSWER:

CURRENT electron

Explanation:

(1)current

(2) electrob

Explanation:

A p-n junction diode is a basic semiconductor device that controls the FLOW of electric current in a circuit. It has a positive (p) side and a negative (n) side. ... To MAKE a p-n junction diode, a different impurity is ADDED to each side of a SILICON semiconductor to change how many extra holes or electrons are present.

Answer:

1/2mv2 will be WORK DONE

LET the acceleration act rightwards, MAKING the trolley 'A' go upward and the trolley 'B' go downward (Mass of 'B' is GREATER than that of 'A').

For simple SOLUTION, the normal reaction acting on the blocks are not considered.

Free body diagram of A:-

From this,

Free body diagram of B:-

From this,

Adding (1) and (2),

Explanation:

Liquids and solids are HARD to COMPRESS because, in liquids, the molecules are TIGHTLY packed when COMPARED to gases. In solids, the molecules are very tightly packed. THEREFORE, they are hard to compress.

Answer:

NUCLEI

Nuclei is the plural of nucleus which is a group of protons and neutrons at the MIDDLE of every ATOM. Nuclear physics investigates things like the makeup of a Nucleus, the FORCES that interact within the nucleus and what makes up not only the nucleus but ALSO what makes up those particles.

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ANSWER:

the moment of FORCE in unit is newton METRE

ANSWER:REMOVAL of metabolic WASTE from the body is called excretion.

Explanation:

Its angle of incidence is 40°

Explanation:

• Angle of incidence is the angle formed by any ray incident with the normal when incident on the surface
• In ray optics we have REFLECTION and REFRACTION phenomena where angle of incidence is having great importance. According to angle of incidence reflection and refraction have different results for EXAMPLE if the ray of light incident on any given surface with angle of incidence 90° then it passes through the given material WITHOUT deviating and reflect along the surface

Given, angle 50° is made with the surface

=> angle of incidence = 90°  - angle made with surface

=> i = 90°- 50°

=> i = 40°

For more clarification see the attached file

To know more about angle of incidence, visit:

The angle of incidence is the angle between the incident ray and the line _______ to the surface.

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What is UNIQUE angle of incidence

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ANSWER:

where is the FIGURE????

ANSWER:

Explanation:

In unform motion speed remains constant WHEREAS in non uniform motion speed doesn't REMAIN constant it may vary with TIME.

Explanation:

Distance covered = 4460 - 4200 = 260 km

TIME taken = 4 hrs 20 mins = 13/3 hrs

Average SPEED = 260 × 3/13 = 60 km/hr

Average Velocity = 0 [As he returned to Delhi and therefore DISPLACEMENT equals 0. As

Average Velocity = Total displacement/ Total Time.]

Average speed = 60 km/hr = 60 × 5/18 = 50/3 m/s

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EXPLANATION:

the QUESTION is IMPROPER BRO

..........

SORRY i don't KNOW ......

ANSWER:

dandanakka dandanakka dandanakka

ANSWER:

f= 100 Hz

Explanation:

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Answer:

2 to the POWER -1 PA (Pascal)

EXPLANATION:

we know, PRESSURE = thrust(force)/area

= 8/16 Pa = 1/2= 2 to the power -1 Pa

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ANSWER:

law of CONSERVATION of energy is nothing but a matter that can be neither CREATED nor destroyed it transferred one FORM to another form

Explanation:

If the PLANE is parallel to the axis of revolution (the y -axis), then the CONIC SECTION is a HYPERBOLA. If the plane is parallel to the generating LINE, the conic section is a parabola. If the plane is perpendicular to the axis of revolution, the conic section is a circle.

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The flux of given VECTOR FIELD is Φ =3πA²H

STEP by step explanation

because

the equation becomes

Question:-

a man does a work in LIFTING water from a WELL 30 day. If the mass of bucket along with water is 20 kg. Calculate the amount of work done by man?

SOLUTION:-

We know that ,

Work done = mg × h (force × Displacement)

GIVEN :

F = (xy + 3z)i + (2y2-x2)i + (z-2y)k

PARTICLE moves from x=0 to x = 1 along a curve defined by the equations:

x2 = 2y;

2x3 = 32

SOLUTION :

◆Work done  W=∫F. DL          

where F - Force and dl - displacement and are vectors.

◆Since the particle is taken from. x= 0 to 1, in x direction,

dl= dx i^

◆(i^ , j^, k^ - unit vector along x ,y and z respectively.)

◆As, F = (xy + 3z)i^ + (2y2-x2)j^ + (z-2y)k^

W = ∫F.dl

◆Substituting values,

= [(xy + 3z)i^ + (2y2-x2)j^ + (z-2y)k^ ]. dx i^

◆W=( xy + 3z).dx --(1)

◆Given,

x^2 = 2y , y = x^2 /2 ,

2x^3 = 3z , z = 2x^3 / 3

◆Substituting in equation (1)

F.dl= x^3/2 + 2x^3 = 5x³/2

◆Integrating along x from 0 to 1

W = ∫F.dl = 5/8.

ANSWER :

W = ∫F.dl = 5/8.

Answer:

POTENTIAL difference between G and H is 3V

Explanation:

I didn't drawn by my own bcoz it will be bore for you for LEARNING so here a picture of it presented by VARIOUS colour.

It's an AUFBAU's principle given in 11th std chemistry TEXT u can refer by there also thank you

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Answer:

R1/R2 = 1/2

See your Solution in the above ATTACHMENT:)

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EXPLANATION:

OPTION 4. HOPE you UNDERSTAND this

It does, were you to look at the SUN DIRECTLY in space, you'd be blinded. That's the point of those gold visors on space suits. The reason it doesn't appear to is that there's very little for the light to strike. Think of shining a flashlight into the air, it has effectively no visible effect. Now if you shine it at a tree, it gets nice and bright. It's the same AMOUNT of light, but it doesn't appear so because we can't see it travel. Now if you mean why isn't space blue, like the sky, that's because when SUNLIGHT filters through the atmosphere, it's interaction with the various gasses scatter the blue light most, giving us that nice HUE. Space, obviously for the most part lacking an atmosphere, doesn't scatter the light, hence the black.

Answer:

In analyzing a circuit using KIRCHHOFF's circuit laws, one can either do NODAL analysis using Kirchhoff's current LAW (KCL) or mesh analysis using Kirchhoff's voltage law (KVL). Nodal analysis writes an equation at each electrical node, requiring that the BRANCH currents incident at a node must sum to ZERO.

EXPLANATION:

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Rheostat =>

It is A Variable RESISTOR Whose Resistance Can Be Decreased Or Increased.

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Explanation:

The Doppler EFFECT (or the Doppler shift) is the change in frequency of a wave in relation to an observer who is MOVING relative to the wave SOURCE. It is named after the AUSTRIAN physicist Christian Doppler, who DESCRIBED the phenomenon in 1842.

ANSWER: 0.008 mm

Explanation:

Answer:

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EXPLANATION:

i HOPE this IMAGE will be USEFUL...

Answer:

What are the “TWO” ways in which the PRESSURE in the ATMOSPHERE is like the pressure in liquids? 2 - the pressure at a given point is equally exerted in all directions; that is, equally outward radially from the given point in the column.

ANSWER:

The Beer-Lambert LAW is the linear relationship between absorbance and CONCENTRATION of an absorbing SPECIES. The Beer-Lambert law IMPLIES that both the type and the concentration of the molecules are important in the process of radiation absorption. There is no information in this law about the nature of radiation.

f=2π√L/√G

the DIMENSIONAL unit for the g is L/T²

So puting it in the FORMULA we will GET

⇒f=2π√L/(√L/√T²)

⇒f=2π √T²

⇒f =2πT ⇒T=2π seconds.

Hence proved.

Answer:

1. The laws of physics take the same form in all INERTIAL frames of reference.
2. As measured in any inertial FRAME of reference, LIGHT is always propagated in empty space with a definite velocity c that is independent of the STATE of motion of the emitting body. Or: the SPEED of light in free space has the same value c in all inertial frames of reference.hope this helps...

The value of x = 20 ohm.

• According to the principle of  wheatstone bridge,

(Resistor r1) / (Resistor R2) = (Resistor r3) / (Resistor r4)

• GIVEN ,

Value of Resistor r1 = 20 ohm

Value of Resistor r2 = 40 ohm

Value of Resistor r3 = (20+x) ohm

Value of Resistor r4 = 80 ohm

• Then by using PRINCIPAL of wheatstone bridge,

(20 / 40) =  [(20 + x)/80]

½ =  [(20 + x)/80]

40 = 20 + x

x = 20 ohm

Answer:

Friction

Friction is the resistance to motion of one object MOVING relative to another. It is not a FUNDAMENTAL force, like gravity or electromagnetism.

Everyday Examples of SLIDING Friction

Rubbing both hands together to create heat.

A SLED sliding across snow or ice.

Skis sliding against snow.

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♠️ Kirchoff's first law states that "At any junction the SUM of current entering the junction is equal to the sum of the current leaving the junction."

♠️ Kirchoff's second law states that "The algebraic sum of change in potential around a closed loop is zero."

♠️Steps to apply Kirchoff's law:-

• Draw current from one or more cell.

• Now CHOOSE a loop. The loop should be closed. It can INVOLVE any number of CELLS, RESISTORS, capacitors etc.

• Choose direction of loop either clockwise or anti clockwise.

• Now if uh go from higher potential to lower potential then it is potential drop. Therefore ∆v should be negative.

• If uh go from lower potential to higher potential then ∆v should be positive.

• If inside the cell path is negative then ∆v is positive. If inside the resistor path is opposite to current then ∆v is positive.

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ANSWER:

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Answer:

Earth's magnetic FIELD

Earth's magnetic field is a magnetic field that emanates from Earth's core and ENCIRCLES the Earth. It can be looked at as sort of a force field that encompasses the Earth and protects our planet from solar radiation.

Special case and uses

The Earth's magnetic field serves to deflect most of the solar wind, whose CHARGED particles would OTHERWISE STRIP away the ozone layer that protects the Earth from harmful ultraviolet radiation.