Explanation

A foot-pound is a unit of work or energy

Specifically, it represents the amount of work done when a force of one pound moves an object one foot in the direction of the force. 

Physical Quantity/ Unit

Work/Energy: foot-pound (ft-lb)

Force: pound (lb)

Distance: foot (ft)

Explanation

Explanation

• GPS stands for Global Positioning System, a network of satellites orbiting the Earth.
• It provide location information and timing signals to GPS receivers on the ground.

Explanation

In case of an electrical shock, providing oxygen is crucial.

Ensure the person is in a safe location.

Then administer CPR and seek medical help immediately.

Explanation

• If an object absorbs all seven colors of light (i.e., all the wavelengths of visible light), it appears black.
• This is because no light is being reflected, and our eyes perceive the absence of light as black.
• When an object reflects all the component colors of light, it appears white.

Explanation

If the RC value is small in a circuit, the capacitor charges fastly. 

RC time constant: The time constant in an RC circuit is represented by the product of resistance (R) and capacitance (C). 

Charging speed: A smaller RC value means the capacitor charges faster. 

Large RC value: Conversely, a large RC value indicates a slower charging process for the capacitor. 

Explanation

When a wire is stretched to double its length, its resistance becomes:

R' = ρ × (2L) / (A/2) = 4 × R

So, the new resistance is 4r ohms

Explanation

Time is a scalar quantity because it only has magnitude (duration) but no direction.

Explanation

Explanation

Van’t Hoff’s equation relates the change in the equilibrium constant (K) to temperature.