Explanation

Steel is most elastic among the rubber, steel, glass and sponge.

Steel having the most steep linear stress-strain curve among all.

A stiffer material will have a higher elastic modulus.

Explanation

The triple point of water is the unique temperature and pressure at which water coexists in all three phases — solid, liquid, and gas — in equilibrium.

Temperature: 273.16 Kelvin

This is used as a fundamental fixed point in defining the Kelvin temperature scale.

Explanation

Explanation

Explanation

Newton's second law of motion states that F = ma, or net force is equal to mass times acceleration.

The other name for Newton's second law is the law of force and acceleration.

Explanation

Lithium is the lightest metal.

Density of 0.534 g/cm³.

It is an alkali metal,

The third element on the periodic table,

It is soft enough to be cut with a knife.

Uses: Due to its low density and high reactivity, it's used in aircraft and, famously, in the production of batteries for electric vehicles and consumer electronics. 

Explanation

- Discovered by: Henry Cavendish  

- Year: 1766  

Symbol: H

Atomic mass: 1.00784 u

Atomic number: 1

Named by: Antoine Lavoisier (1783)

Explanation

Studies show that it takes an average of 8 minutes and 20 seconds for sunlight to move from the sun to the earth.

Sunlight moves at the speed of light.

You can see that the distance of the sun from the earth = 149.6 x 106 km.

Photons emitted from the surface of the sun need to traverse the vacuum of the universe to reach our eyes.

Explanation

Explanation

The Waxing moon refers to the phase when the visible portion of the moon is increasing.

It moving from new moon towards full moon.