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Question Number 23758 Answers: 1 Comments: 0

solve ∫tan^(−1) x ln (1+x^2 )dx

$s o l v e$ $\int \tan^{- 1} x \ln (1 + x^{2}) d x$

Question Number 23759 Answers: 0 Comments: 3

Question Number 23831 Answers: 0 Comments: 0

What is the answer for P(z=0.23)?

$W h a t i s t h e a n s w e r f o r P (z = 0.23) ?$

Question Number 23830 Answers: 0 Comments: 2

∫sin(101x)sin^(99) xdx

$\int \sin (101 x) \sin^{99} xdx$

Question Number 23752 Answers: 1 Comments: 0

∫_1 ^2 x^3 +1=?

$\int_{1}^{2} x^{3} + 1 = ?$

Question Number 23785 Answers: 2 Comments: 0

A function f is define by f : → 3 − 2sinx, for 0 ≤ x ≤ 360 find the range of f

$A function f is define by f : \to 3 - 2 sinx, for 0 ⩽ x ⩽ 360$ $find the range of f$

Question Number 23748 Answers: 1 Comments: 1

Question Number 23741 Answers: 1 Comments: 0

(1+i)(2+i)

$(1 + i) (2 + i)$

Question Number 23715 Answers: 0 Comments: 0

Why ΔS > 0 for the reaction 2HgO(s) → 2Hg(l) + O_2 (g)?

$Why Δ S > 0 for the reaction$ $2 HgO (s) \to 2 Hg (l) + O_{2} (g) ?$

Question Number 23711 Answers: 1 Comments: 0

A certain ideal gas has C_(v, m) = a + bT, where a = 25 J/(mol. K) and b = 0.03 J(mol.K^2 ). Let 2 mole of this gas go from 300 K and 2 litre volume to 600 K and 4 litre. ΔS_(gas) is

$A certain ideal gas has C_{v, m} = a + bT,$ $where a = 25 J / (mol . K) and b = 0.03$ $J (mol . K^{2}) . Let 2 mole of this gas go$ $from 300 K and 2 litre volume to 600 K$ $and 4 litre . Δ S_{gas} is$

Question Number 23707 Answers: 1 Comments: 4

Two blocks A and B of mass 1 kg and 2 kg respectively are connected by a string, passing over a light frictionless pulley. Both the blocks are resting on a horizontal floor and the pulley is held such that string remains just taut. At time t = 0, a force F = 20t N, starts acting on the pulley along vertically upward direction. Calculate vertical displacement of the pulley upto the instant when B loses contact with the floor.

$Two blocks A and B of mass 1 kg and$ $2 kg respectively are connected by a$ $string, passing over a light frictionless$ $pulley . Both the blocks are resting on a$ $horizontal floor and the pulley is held$ $such that string remains just taut . At$ $time t = 0, a force F = 20 t N, starts$ $acting on the pulley along vertically$ $upward direction . Calculate vertical$ $displacement of the pulley upto the$ $instant when B loses contact with the$ $floor .$

Question Number 24506 Answers: 0 Comments: 8

A spot light S rotates in a horizontal plane with a constant angular velocity of 0.1 rad/s. The spot of light P moves along the wall at a distance 3 m. What is the velocity of the spot P when θ = 45°?

$A spot light S rotates in a horizontal$ $plane with a constant angular velocity$ $of 0.1 rad / s . The spot of light P moves$ $along the wall at a distance 3 m . What$ $is the velocity of the spot P when θ = 45 ° ?$

Question Number 23700 Answers: 0 Comments: 3

If (1 − x^3 )^n = Σ_(r=0) ^n a_r x^r (1 − x)^(3n−2r) , then the value of a_r , where n ∈ N is (1)^n C_r ∙3^r (2)^n C_(3r) (3)^n C_(r−1) 2^(r−1) (4)^n C_r 2^r

$If {(1 - x^{3})}^{n} = \underset{r = 0}{\sum^{n}} a_{r} x^{r} {(1 - x)}^{3 n - 2 r}, then$ $the value of a_{r}, where n \in N is$ $(1)^{n} C_{r} \cdot 3^{r}$ $(2)^{n} C_{3 r}$ $(3)^{n} C_{r - 1} 2^{r - 1}$ $(4)^{n} C_{r} 2^{r}$

Question Number 23694 Answers: 0 Comments: 0

Calculate the lattice enthalpy of MgBr_2 . Given that Enthalpy of formation of MgBr_2 = −524 kJ mol^(−1) Sublimation energy of Mg = +2187 kJ mol^(−1) Vaporisation energy of Br_2 (l) = +31 kJ mol^(−1) Dissociation energy of Br_2 (g) = +193 kJ mol^(−1) Electron gain enthalpy of Br = −331 kJ mol^(−1)

$C a l c u l a t e t h e l a t t i c e e n t h a l p y o f {M g B r}_{2} .$ $G i v e n t h a t$ $E n t h a l p y o f f o r m a t i o n o f {M g B r}_{2} = - 524$ $k J {m o l}^{- 1}$ $S u b l i m a t i o n e n e r g y o f M g = + 2187$ $k J {m o l}^{- 1}$ $V a p o r i s a t i o n e n e r g y o f {B r}_{2} (l) = + 31$ $k J {m o l}^{- 1}$ $D i s s o c i a t i o n e n e r g y o f {B r}_{2} (g) = + 193$ $k J {m o l}^{- 1}$ $E l e c t r o n g a i n e n t h a l p y o f B r = - 331$ $k J {m o l}^{- 1}$

Question Number 23688 Answers: 1 Comments: 0

Question Number 23687 Answers: 1 Comments: 0

Solve for x, y and z x^2 − yz = 1 .......... (i) y^2 − xz = 4 .......... (i) z^2 − xy = 9 .......... (i)

$Solve for x, y and z$ $x^{2} - yz = 1 . . . . . . . . . . (i)$ $y^{2} - xz = 4 . . . . . . . . . . (i)$ $z^{2} - xy = 9 . . . . . . . . . . (i)$

Question Number 23686 Answers: 0 Comments: 0

A function f is defined by f : x → 3 − 2sin(x), for 0 ≤ x ≤ 360° find the range of f

$A function f is defined by f : x \to 3 - 2 \sin (x), for 0 ⩽ x ⩽ 360 °$ $find the range of f$

Question Number 23683 Answers: 0 Comments: 0

Question Number 23682 Answers: 0 Comments: 0

Question Number 23679 Answers: 2 Comments: 0

Question Number 23718 Answers: 0 Comments: 1

5(tan^2 x−cos^2 x)=2cosx+a then find then find the value of cos4x.???

$5 (\tan^{2} x - \cos^{2} x) = 2 c o s x + a t h e n f i n d$ $t h e n f i n d t h e v a l u e o f c o s 4 x . ? ? ?$

Question Number 23739 Answers: 0 Comments: 3

Question Number 23666 Answers: 2 Comments: 1

A uniform rope of length L and mass per unit λ having one end fixed with the ceiling is released from rest. Find the tension in the fixed end as a function of the distance travelled by the movable end.

$A uniform rope of length L and mass$ $per unit λ having one end fixed with$ $the ceiling is released from rest . Find$ $the tension in the fixed end as a function$ $of the distance travelled by the movable$ $end .$

Question Number 23677 Answers: 0 Comments: 0

solve lim_(x→inf+) ∫^(2(√x)) _(2sin(1/x)) ((2t^4 +1)/((t−3)(t^3 +3))) dt

$s o l v e$ $\underset{x \to i n f +}{li m} {\int_{2 s i n \frac{1}{x}}}^{2 \sqrt{x}} \frac{2 t^{4} + 1}{(t - 3) (t^{3} + 3)} d t$

Question Number 23663 Answers: 1 Comments: 3

solve ∫^1_ _(−1) x^2 d(lnx)

$s o l v e$ ${\int_{- 1}}^{1_{}} x^{2} d (l n x)$

Question Number 23657 Answers: 0 Comments: 1

Mr.Ajfour ,which app do you use for making these diagrams?

$M r . A j f o u r, w h i c h a p p d o y o u$ $u s e f o r m a k i n g t h e s e d i a g r a m s ?$

Pg 1802 Pg 1803 Pg 1804 Pg 1805 Pg 1806 Pg 1807 Pg 1808 Pg 1809 Pg 1810 Pg 1811

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