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New Question

a month ago

0 Follower 2 Views

R
Raj Pandey

Contributor-Level 9

g e f f = g + a

= g + g 6

= 7 g 6

T ' = 2 π l g e f f

T ' = 6 7 T

New Question

a month ago

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V
Vishal Baghel

Contributor-Level 10

According to question, we can write

  d = 2 h R d 2 d 1 = h 2 h 1 h 2 = ( d 2 d 1 ) 2 h 1 = ( 2 1 ) 2 × 1 2 5 = 5 0 0 m

Increment in height of tower = h2 – h1 = 500 – 125 = 375 m

New Question

a month ago

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R
Raj Pandey

Contributor-Level 9

Steam point (T1) = 100°C = 273 + 100 = 373 K

Ice point (T2) = 0°C = 273 K

η = ( 1 T 2 T 1 ) × 1 0 0 = ( 1 2 7 3 3 7 3 ) × 1 0 0 = 2 6 . 8 1 %  

New Question

a month ago

0 Follower 1 View

A
Aadit Singh Uppal

Contributor-Level 10

This is because the satellite doesn't have any other external third force acting upon it. Its original total energy comprises kinetic and potential energy, which remains constant since the gravity has zero influence over the satellite.

New Question

a month ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Let AB x 2 y + 1 = 0  

AC  2 x y + 1 = 0  

So vertex A = (1, 1)

altitude from B is perpendicular to AC and passing through

orthocentre.

So, BH = x + 2y – 7 = 0

CH = 2x + y – 7 = 0

now solve AB & BH to get B (3, 2) similarly CH and AC to get C (2, 3) so centroid is at (2, 2)

 

New Question

a month ago

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V
Vishal Baghel

Contributor-Level 10

If currents are flowing in same direction, magnetic field will cancel each other, so the currents must flowing in opposite direction

B P = μ 0 I 2 π r × 2

3 0 0 × 1 0 6 = 4 π × 1 0 7 2 π × 4 × 1 0 2 × 2                                                                         

=> I = 30 A

New Question

a month ago

0 Follower 2 Views

R
Raj Pandey

Contributor-Level 9

g r 0 r R

g 1 r 2 r > R

 

New Question

a month ago

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S
Swayam Gupta

Contributor-Level 6

Organic chemistry is applied in pharmaceuticals, the food industry, the manufacture of polymers, agriculture, and environmental science. Most of the things that we use in daily life, such as soaps and medicines, are made of organic molecules.

New Question

a month ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Line  to the normal

->3p + 2q – 1 = 0

( 2 , 1 , 3 ) lies in the plane 2p + q = 8

From here p = 15, q = -22

Equation of plane 15x – 22y + z – 5 = 0

Distance from origin =  | 5 1 5 2 + ( 2 2 ) 2 + 1 2 | = 5 1 4 2  

New Question

a month ago

0 Follower 3 Views

A
Aadit Singh Uppal

Contributor-Level 10

The minus sign in the formula indicates that:

  • A gravitational force exists.
  • The satellite cannot leave the orbit by itself.
  • A minimum threshold of energy will be required to move the satellite from its existing orbit.

New Question

a month ago

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S
Swayam Gupta

Contributor-Level 6

The main difference between organic compounds and inorganic compounds is that organic compounds contain carbon atoms from bonds with hydrogen and other elements, whereas inorganic compounds don't have carbon atoms (except carbonates and cyanides).

New Question

a month ago

0 Follower 3 Views

A
alok kumar singh

Contributor-Level 10

( x 1 2 ) 2 + ( y 1 2 ) 2 = 1                                                    

here AB =  2 , BC = 2, AC = 2

area =  1 2 × 2 × 2 = 1  

 

New Question

a month ago

0 Follower 2 Views

R
Raj Pandey

Contributor-Level 9

By conservation of Angular momentum

Li = Lf 

M R 2 ω = ( m R 2 + 2 m R 2 ) ω '

2 M M + 2 m = ω '

ω ' = 2 M M + 2 m

New Question

a month ago

0 Follower 4 Views

V
Vishal Baghel

Contributor-Level 10

Process-AB Isobaric,                                                           

Process-AC Isothermal, and

Process-ADÞAdiabatic

W2 < W1 < W3

 

New Question

a month ago

0 Follower 2 Views

S
Swayam Gupta

Contributor-Level 6

In class 11 organic chemistry, the important chapters are hydrocarbons, classification of organic compounds, isomerism, method of purification of organic compounds, and Qualitative and quantitative analysis of organic compounds.

New Question

a month ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Tangents making angle π 4  with y = 3x + 5.

t a n π 4 = | m 3 1 + 3 m | m = 2 , 1 2  

So, these tangents are  . So ASB is a focal chord.

New Question

a month ago

0 Follower 3 Views

V
Vishal Baghel

Contributor-Level 10

According to Law of discharging of capacitor, we can write

Q = Q 0 e t τ Q 2 8 = Q 0 e t 2 τ t 2 3 τ l n ( 2 ) , a n d

U = Q 2 2 C = Q 0 2 2 C e 2 t τ 1 2 ( Q 0 2 2 C ) = Q 0 2 2 C e 2 t τ t 1 = τ 2 l n ( 2 )

t 1 t 2 = 1 6

New Question

a month ago

0 Follower 3 Views

R
Raj Pandey

Contributor-Level 9

NLM at point Q

N – mg sin a =  m v 2 R  

N = m v 2 R + m g s i n α           - (1)

COE : between P & Q

m v 2 R = 2 m g s i n α               - (2)

Centripetal force = 2mg sin a

 N (Normal Reaction) = 2mg sin a + mg sin a

  = 3mg sin a

C e n t r i p e t a l f o r c e N o r m a l R e a c t i o n = 2 m g s i n α 3 m g s i n α = 2 3             

 

New Question

a month ago

0 Follower 3 Views

V
Vishal Baghel

Contributor-Level 10

The light wave contains two lights of different frequencies, so

  E 1 = h υ 1 = 4 . 1 4 × 1 0 1 5 × 6 × 1 0 1 5 2 π = 3 . 9 6 e V , a n d

  E 2 = h υ 2 = 4 . 1 4 × 1 0 1 5 × 9 × 1 0 1 5 2 π = 5 . 9 2 e V

Maximum kinetic energy of the photoelectron = 5.9-2.5 = 3.42 eV

New Question

a month ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

d y 1 + y 2 = 2 e x d x 1 + ( e x ) 2 + C  

t a n 1 y = 2 t a n 1 e x + C

x = 0, y = 0

0 = 2 t a n 1 + C

-> C = + π 2

now at x =  l n 3  

t a n 1 y = 2 t a n 1 ( e l n 3 ) + π 2

6 ( y ' ( 0 ) + ( y ( l n 3 ) ) 2 ) = 6 ( 1 + 1 3 ) = 4  

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