Explanation

Tides are primarily caused by the gravitational pull of both the Moon and the Sun.

The Moon has a stronger effect due to its proximity to Earth.

The Sun's gravitational influence also plays a significant role in the tidal patterns we observe.

Explanation

 Alexander Graham Bell is credited with inventing the first practical metal detector

He developed it in 1881

Explanation

An odometer measures the total distance a vehicle has traveled.

It is usually located on the dashboard near the speedometer.

Explanation

The first law of reflection states that the angle of incidence = angle of reflection.

Both rays and the normal lie in the same plane.

Explanation

Scientific socialism is strongly associated with Karl Marx.

He, along with Friedrich Engels, developed this theory in the mid-1800s

Analyzing societal structures through a historical, economic, and scientific lens, particularly focusing on class conflict.

Explanation

A hand drill uses two mutually perpendicular gears to convert rotary motion.

This mechanism increases torque and helps in efficient drilling.

Explanation

To convert Celsius to Kelvin: K = °C + 273.15

So, 37 + 273.15 ≈ 310 K

Explanation

Torque = Force × Distance

= 15 N × 0.4 m

= 6 Nm

Explanation

Newton's Second law of motion:

The rate of change of momentum of any object is directly proportional to the applied force on the body.

Explanation

Using the formula for parallel resistance: 1/R_eq = 1/R1 + 1/R2

1/24 = 1/40 + 1/R

Solving for R gives R = 60Ω.