Explanation

• Speed can be thought of as the rate at which an object covers distance.
• The SI unit of speed is the metre per second (m/s)
• Common symbols: v
• Dimension: L T−1

Explanation

In a cloudburst, rainfall specifically exceeds 100 millimetres (about 4 inches) per hour over a localized area. 

Explanation

• The shoulder is primarily a ball-and-socket joint (glenohumeral joint),
• The elbow is a hinge joint (ulnohumeral joint).
• Both are classified as synovial joints,
• Freely movable and surrounded by a fluid-filled capsule. 

Explanation

• Silicon oxide is commonly known as silica or silica sand
• It is the primary component of sand, quartz, and glass.

Explanation

• An anion is a negative charge (or negatively charged ion).
• The 'n' in anion stands for negative
• Formed when non-metal gains electrons.
• They gain one or more than one electron.
• Formation: Gained electrons.
• Attracted to the anode (positively charged electrode).
• Generally larger than their parent atoms. 

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Cations are ions that are positively charged

Last updated 15-03-2026

Explanation

• Carnivores are animals that eat only meat, primarily from other animals.
• Examples of carnivores include lions, tigers, bears, wolves, and sharks.

Additional information:

• Animals that eat plants exclusively are herbivores.
• Animals that eat both plants and meat are called omnivores.

Last verified on 07-03-2026

Explanation

 SI unit of angular acceleration is rad per second per second or rad/s2.

Explanation

Explanation

• The SA (sinoatrial) node initiates the heartbeat.
• It produces rhythmic electrical impulses automatically.
• It sets the normal heart rate, so it is called the natural pacemaker.
• Located in the right atrium
• It is the dominant pacemaker because its cells generate action potentials faster than other parts of the conduction system.

Explanation