Physics

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New answer posted

11 months ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

In given circuit inductor behave as a simple wire so resultant circuit will be

Ref = 2 + 1 = 3 Ω  

V = IR


l = 3 0 3 = 1 0 A  

 

New answer posted

11 months ago

0 Follower 3 Views

A
alok kumar singh

Contributor-Level 10

l = V 0 B l R = V 0 * 5 * 2 0 * 1 0 2 4 + 1         

  2 * 1 0 3 = V 0 * 2 0 * 1 0 2

V 0 = 2 * 1 0 3 2 0 * 1 0 2 = 2 2 * 1 0 2 = 1 * 1 0 2 m / s

V0 = 1 cm/s

New answer posted

11 months ago

0 Follower 13 Views

A
alok kumar singh

Contributor-Level 10

Object is moving in upward direction with constant velocity so in upward motion (+2N) and for downward motion (-2N) So option (1) is correct representation.

 

New answer posted

11 months ago

0 Follower 47 Views

A
alok kumar singh

Contributor-Level 10

Maximum energy = 10 J

1 2 K x 2 = 1 0              

K = 5

Given Tpendulum = Tspring

2 π l g = 2 π m K             

4 g = 5 5           

g = 4m/s2

New answer posted

11 months ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Range R = u 2 s i n 2 θ g

For 42° and 48° Range will be same

H m a x α  maximum q

So maximum height will be for 48°

 

New answer posted

11 months ago

0 Follower 4 Views

A
alok kumar singh

Contributor-Level 10

Comparing E = 20 cos (2 * 1010 t – 200x) V/m to

E = E 0 c o s ( ω t k x ) v / m              

ω = 2 * 1 0 1 0 , K = 2 0 0               

Speed = 2 * 1 0 1 0 2 0 0 = 1 0 8 m / s  

R.I. = C s p e e d = 3 * 1 0 8 1 0 8 = 3  

N o w R . I . = ε r μ r

3 = ε r * 1

ε r = 9              

            

 

New answer posted

11 months ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Work done is equal to change in K.E.

S o W 1 + W 2 = 1 2 M ( 0 . 8 g h ) 2 0 W1 -> work done by mg

m g h + W 2 = 1 2 m * 0 . 6 4 g h  W2 -> work done by air friction

W 2 = 0 . 3 2 m g h m g h = 0 . 6 8 m g h              

W2 = -0.68 mgh

New answer posted

11 months ago

0 Follower 1 View

S
Syed Aquib Ur Rahman

Contributor-Level 10

Schrödinger's wave equation explains the microscopic world that governs chemistry, electronics, and modern technology. It's basically how our digital world actually functions at the atomic level.

New answer posted

11 months ago

0 Follower 4 Views

A
alok kumar singh

Contributor-Level 10

Energy required to melt

Q = M S Δ T + M L  

1 0 1 * 2 * 1 0 3 * 1 0 + 1 0 1 * 3 . 3 3 * 1 0 5      

->3.53 * 104 J

Heat produce in wire

H = l2RT

  Q = 3 . 5 3 * 1 0 4 = ( 1 2 ) 2 * ( 4 * 1 0 3 ) * t

t = 3 . 5 3 * 1 0 4 * 4 4 * 1 0 3 = 3 5 . 3 s e c             

             

New answer posted

11 months ago

0 Follower 1 View

S
Syed Aquib Ur Rahman

Contributor-Level 10

Computer chips, lasers, MRI machines, LED lights, and solar panels all rely on quantum effects that this equation of Schrodinger helps us understand and design.

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