Question
Consider the following statements about static
electricity: (I) It is the electricity built up on the surface of a substance. (II) It is generated by power plants and batteries. (III) Static electricity is uncontrolled.Solution
Static electricity is the buildup of an electric charge on the surface of objects, which typically occurs through contact or friction between materials. Unlike current electricity, it is not generated by power plants or batteries and is often uncontrolled, leading to sudden discharges like sparks.
Which of the given trigonometric identities is incorrect ?
1. tan2 θ = sec2 θ - 1B. cosec2 θ = 1 + cot
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
? + 157.99 – 101.01 = 25.01 × 5.98
8.15 of 124.95 ÷ 40.13 + 249.84 X 14.18 - √325 X 149.87 = ? X 10.85
(1440.13 ÷ 31.77) × (√168.69 + 16) - (24.87% of 719.99) = ?
499.98% of (√440.8 + 12.922 ) - 12.02 of 4.82 = ? of 9.82 + 9.98% of 999.94
(363.89% of 224.98 – 319.86% of 134.94) ÷ ? = √(134.88 ÷ 15.25)
16.22 × 12.99 + 142.15 = ?
(98.999)2 - (9.9)2 - (14.9)2 = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
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