Explanation

Maxwell's equations led to the derivation of the speed of electromagnetic waves, including light.

The speed of light (c) is given by C = 1/√μ₀ε₀, where μ₀ is the permeability of free space and ε₀ is the permittivity of free space.

Explanation

The frequency heard by the observer as the car approaches is given by the Doppler effect formula:

f' = f * (v / (v - v_s))

where f = 500 Hz, v = 340 m/s, and v_s = 20 m/s.

f' = 500 * (340 / (340 - 20))

= 500 * (340 / 320)

= 500 * 1.0625

= 531.25 Hz

Explanation

e/m = 2E/B²r²

The formula is derived by equating the magnetic Lorentz force to the centripetal force and using the kinetic energy gained from the accelerating voltage E.

This formula correctly relates the charge-to-mass ratio of an electron to the magnetic field B, radius of the circular path r, and accelerating voltage E.

Explanation

When a body moves with uniform velocity, its speed and direction remain constant throughout the motion.

In such a case, the average velocity over any time interval is equal to the instantaneous velocity at any moment.

Explanation

The highest level of learning in the affective domain is Characterizing.

• Receiving/Attending
• Responding
• Valuing
• Organizing
• Characterizing

Explanation

A stimulating environment nurtures a child's intellectual growth and learning.

Interaction, exposure, and support in the environment help in developing maximum intelligence.

Explanation

For a leptokurtic distribution, β₂ > 3:

β₂ = μ₄ / μ₂² > 3

Given μ₂ = 3.5:

μ₄ / (3.5)² > 3

μ₄ > 3 × 12.25

μ₄ > 36.75

Explanation

Effective lesson planning includes content (what to teach), sequence (order of teaching), and time (duration).

These components ensure the lesson is organized, goal-oriented, and manageable.

Explanation

Activity method engages young learners through hands-on experiences and practical tasks.

It helps students appreciate and understand concepts better at the elementary level.

Explanation

The speed at a banked turn is given by:

v = √(rg tan(θ))

Given v = √(rg), we can equate:

√(rg tan(θ)) = √(rg)

This simplifies to:

tan(θ) = 1

θ = arctan(1) = 45°.