Explanation

When the speed of sound in water is 1500 meters per second and the reflected sound waves are detected after 0.40 seconds, the depth of water can be calculated as follows:

• depth = speed x time / 2
• depth = 1500 x 0.40 / 2
• depth = 600 meters

Explanation

In ideal projectile motion, gravity is the only significant force acting downward on the object.

Air resistance is usually neglected, so gravitational force controls the curved path.

Explanation

Acceleration is directly caused by a net force acting on an object.

It always occurs in the same direction as the net (unbalanced) force applied.

Explanation

Explanation

The speed of sound is greater in solids because they have a higher density and elasticity compared to liquids and gases.

This allows sound waves to travel faster through solids

Due to the closer proximity of molecules and their stronger intermolecular forces, which facilitate the rapid transfer of vibrational energy. 

Explanation

The area of the parallelogram formed by two adjacent sides, A and B, with an angle θ between them is given by the formula: Area = |A||B|sin(θ).

This is equivalent to the magnitude of the cross product of the vectors A and B, which can be written as |A x B|. 

Explanation

Explanation

When current flows through an inductance, it builds up gradually due to the back electromotive force (EMF) induced by the changing current.

This results in an exponential growth of the current over time.

Explanation

• Humidity in the air was measured by a Hygrometer.
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• A hygrometer is an instrument used to measure relative humidity.
• Humidity is the measure of the amount of moisture in the air.
• A psychrometer is an example of a hygrometer.
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• The humidity in the air tells us about the ratio of Water vapors in the air

Explanation

The maximum power transfer theorem states that maximum power is delivered to the load when the load resistance 𝑅𝐿 is equal to the source (or internal) resistance Rs of the power source.

Mathematically, this can be expressed as:

𝑅𝐿 =𝑅𝑠

When the load resistance matches the source resistance, the power transferred to the load is maximized.