Question

Se
प्रा समीकरण संतुलित कीजिए
Fe+Ho - fez Ou + H2 2​

Answer 1

Answer:

Consider the following,

work done is written as W = F.s = FsCosθ here F is the force applied, s is the displacement caused such that

F = mg = 10 X 10 = 100 N s

W( horizontal direction)= FsCos(0)=500J , θ is the angle between (vectors) F and s now,

as F and s are perpendicular for vertical direction, θ = 90 thus, W = FsCos90 = 0

Explanation:

Given

a

2

=13 and a

5

=25

We know that

a

n

=a+(n−1)d

∴a

2

=a+(2−1)d

⇒13=a+(2−1)d

⇒a+d=13 ...(i)

and a

5

=a+(5−1)d

⇒25=a+4d

⇒a+4d=25 ...(ii)

Now, subtracting (i) from (ii), we get

3d=12

⇒d=4

Now a+d=13 [from (i)]

⇒a=9

Hence, a

7

=a+6d=9+6(4)

⇒a

7

=33