Explanation

Spectroscopy is a analytical technique used to measure the interaction between matter and electromagnetic radiation, such as light.

It is used to assess the concentration or amount of a given atomic, molecular, or ionic chemical species by measuring the absorption, emission, or scattering of light by the species.

Explanation

Starch is a polysaccharide, a long chain of glucose molecules linked together through glycosidic bonds.

It is a complex carbohydrate that serves as a energy storage molecule in plants.

Explanation

Acids are known to cause corrosive effects on skin, including burns, ulcers, and damage to skin tissue.

Examples of corrosive acids include sulfuric acid (H2SO4), hydrochloric acid (HCl), and nitric acid (HNO3).

Explanation

Hallucinogens are drugs that alter perception, thought, and mood, often causing:

• Blurred vision
• Hallucinations (seeing or hearing things that aren't there, like unseen faces)
• Altered mood, including euphoria

Explanation

Competition is the interaction between organisms of a community that occupy the same habitat and seek the same resources, such as food, water, light, and space.

This "cold war" leads to a struggle for existence, where individuals with favorable traits are more likely to survive and reproduce.

Explanation

The biosphere is the global sum of all ecosystems on Earth, encompassing everything from the tiniest microbe to the mightiest tree.

It's the zone of life on our planet, where all living things exist and interact.

The biosphere includes land, oceans, atmosphere, and even the depths of the Earth's crust.

Explanation

The velocity of a satellite is independent of its mass.

According to Kepler's laws, velocity is determined by the orbit's semi-major axis and the central body's gravitational constant (G), not by the satellite's mass.

Explanation

Newton's law of universal gravitation states that every point mass attracts every other point mass by a force acting along the line intersecting both points.

This law applies to all objects in the universe, regardless of their size, shape, or composition.

Explanation

When a body is in unstable equilibrium, a slight tilt will cause its center of gravity (CG) to remain above the point of contact, making it prone to toppling over or falling.

This means that the CG is not directly over the point of support, but is still above it, creating a moment that tends to rotate the body further.

Key Points:

• A body is in stable equilibrium after slight tilt if its center of gravity remains above the point of contact.
• A body is in neutral equilibrium when its center of gravity remains at same height.

Explanation

This is a statement of Newton's second law of motion, which states that the force (F) required to accelerate an object is proportional to its mass (m).