Explanation

In simple harmonic motion (SHM), the object's maximum speed occurs when it passes through the equilibrium point, which is the midpoint of its oscillation.

Explanation

Surfactants reduce the surface tension of water, which is the energy required to create a surface between water and air.

By reducing surface tension, surfactants make it easier for water to spread and penetrate surfaces, which is important for cleaning and other applications.

Explanation

During alcoholic fermentation, yeast converts sugars in the dough into carbon dioxide gas (CO2) and ethanol (ethyl alcohol).

The CO2 produced gets trapped in the dough, causing it to expand and rise.

This process is responsible for the light and airy texture of bread.

Explanation

The tricep brachii is a large muscle in the back of the upper arm, responsible for extending (straightening) the elbow joint.

It has three heads (hence the name "tricep"), which originate from the scapula and humerus bones.

Explanation

Gamma (γ) radiation consists of high-energy electromagnetic waves, such as X-rays or gamma rays, that travel in a straight line and are not affected by electric or magnetic fields.

Gamma radiation is a form of ionizing radiation and can travel several meters in air or several centimeters in dense materials before being absorbed.

Explanation

The velocity of light in a diamond is reduced due to the refractive index of the diamond. The refractive index (n) is related to the velocity of light (v) by the formula:

v = c / n

where c is the speed of light in vacuum (approximately 3x10^8 m/s).

Given the refractive index of diamond is 2.5, we can calculate the velocity of light in diamond as:

v = c / n = 3x10^8 m/s / 2.5 = 1.2x10^8 m/s

So, the correct answer is 1.2x10^8m/s!

Explanation

In an oscillating pendulum, the bob accelerates from its extreme position due to the gravitational force acting on it.

The gravitational force pulls the bob towards the equilibrium position, causing it to accelerate.

Explanation

Spectroscopy is the study of the interaction between light (electromagnetic radiation) and matter.

This interaction can occur with atoms, molecules, or ions in any state (solid, liquid, gas, or plasma).

Explanation

The value of Kc (equilibrium constant) increases when the concentration of the product increases.

This is because Kc is a measure of the ratio of products to reactants at equilibrium.

A higher product concentration means a greater tendency for the reaction to proceed in the forward direction.

Explanation

Dynamic equilibrium is a state where the rates of forward and reverse reactions are equal, and the concentrations of reactants and products remain constant.

However, this equilibrium can be disturbed by external stresses such as:

• Changes in concentration
• Changes in temperature
• Changes in pressure
• Adding or removing reactants or products