Explanation

Explanation

Using the Heisenberg Uncertainty Principle:

ΔE * Δt >= h/4π

where ΔE = h * Δv (energy uncertainty) and Δt = 10^(-8) s (lifetime)

h * Δv * 10^(-8) >= h/4π

Δv >= 1/(4π * 10^(-8))

≈ 8 x 10^6 Hz

Explanation

• The velocity of a wave (v) is equal to the product of its wavelength (λ) and frequency (f).
• This is expressed mathematically as: v = λf

Explanation

• Wood is an insulator and cannot conduct electricity.
• So it cannot be used to complete a circuit.

Explanation

Wavelength of slow moving neutrons is about 10^-10 m.

Explanation

Inductance ($L$) is primarily influenced by the following factors:

1. Number of Turns:

   The inductance increases with an increase in the number of turns in the coil. More turns create a stronger magnetic field, which enhances inductance.

2. Area of the Coil:

   The larger the cross-sectional area of the coil, the greater the inductance, as it can enclose more magnetic flux.

3. Length of the Coil:

   The inductance decreases with an increase in the length of the coil. A longer coil has a weaker magnetic field for a given current.

4. Core Material:

   The material around which the coil is wound (the core) affects inductance. Ferromagnetic materials increase inductance due to their higher permeability compared to air or non-magnetic materials.

Explanation

In an adiabatic process, when the volume of a gas decreases, the temperature of the gas increases.

• In an adiabatic process, no heat is exchanged with the surroundings.
  
• When the volume decreases, the gas is compressed, and work is done on the gas.
• This work increases the internal energy of the gas, which raises its temperature.

Explanation

When two waves of the same frequency and amplitude meet in phase, they align perfectly at their peaks and troughs.

This results in constructive interference, where the amplitudes of the waves add together.

Explanation

Resistors connected in parallel are arranged side-by-side, allowing the charge to split into multiple paths.

Each resistor experiences the same voltage across it but has different currents depending on its resistance.

Explanation

1 kilometre (km) = 1000 metres (m)

So 0.05 km = 0.05 x 1000 m = 50 m.