Explanation

Explanation

An equation of the form ax² + bx + c = 0 is called a quadratic equation.

Here, it has no x-term, but still fits that form.

Explanation

If the RC value is small in a circuit, the capacitor charges fastly. 

RC time constant: The time constant in an RC circuit is represented by the product of resistance (R) and capacitance (C). 

Charging speed: A smaller RC value means the capacitor charges faster. 

Large RC value: Conversely, a large RC value indicates a slower charging process for the capacitor. 

Explanation

In the number 8.70 × 10⁻¹²:

All non-zero digits and zeros between or after non-zero digits (if decimal is present) are significant.

So, 8, 7, and the 0 after 7 are all significant.

Therefore, the number has 3 significant figures.

Explanation

Van’t Hoff’s equation relates the change in the equilibrium constant (K) to temperature.

Explanation

Let original number = 100

Increase 30% ⇒ 130

Decrease 10% ⇒ 130 - 13 = 117

Net change = 117 - 100 = 17% increase

Explanation

Adequate کافی

Sufficient: کافی

Explanation

We are given:

• $x+y=6$

• $xy=5$

We are asked to find:
$x^2 + y^2$

Step-by-step solution:

Use the identity:

x^2+y^2=(x+y)^2−2xy

Substitute the given values:

$$$$x^2+y^2=(6)^2−2(5)=36−10=26

Explanation

Newton's laws are not valid in a non-inertial frame. 

An inertial frame is a frame of reference where an object at rest remains at rest and an object in motion continues to move at a constant velocity unless acted upon by an external force.

Newton's laws are valid in inertial frames. 

A non-inertial frame is a frame that is accelerating with respect to an inertial frame.

In these frames, Newton's laws do not hold true because apparent forces seem to exist due to the acceleration of the frame

Explanation

In Flutter, the Scaffold() widget is typically used within the build() method of a StatefulWidget or StatelessWidget.

More specifically, it serves as the root widget for most screens in a Flutter application, providing the basic layout structure for Material Design.