The Fundamental Unit of Life — Science STD 9 — Question

What is the above image?

In order to prove the law of conservation of energy in a freely falling object, Nakul followed the steps:
A: Found P.E. at the height ‘h’
B: Used v² = u² + 2as and (h - s) to find total energy after a fall of 's' metre.
C: Found K.E. just at the time of landing.
The sequence of steps are:

When you hit a wall and sponge with equal force. Which case will hurt more?

A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case:

Which of the following represent the suitable condition for the liquefaction of gases?

1. Low temperature, low pressure.
2. High temperature, low pressure.
3. Low temperature, high pressure.
4. High temperature, high pressure.

Kinetic energy of particles of water in three vessels X, Y and Z are Ex, Ey and Ez respectively. Then the temperature of water in the three vessels are:

Lipids and proteins constituting the cell membrane are synthesized at:

The _________ force is responsible for providing the necessary centripetal force to planets moving around the Sun.

Which one of the following is the fastest growing carp?

1. Rohu
2. Catla
3. Mrigal
4. Singhara

During hot sunny day, people sprinkle water on the roof because: