What is common among the following phenomena?
1. Planetary motion
2. Blinking of traffic lights
3. Motion of fan blades rotating
4. Swinging of a pendulum
(a) They are all chemical changes.
(b) They are all periodic changes.
(c) They are all undesirable changes.
(d) They are all physical changes.
i need explanation
Count the number of squares formed in the given figure ?
there are 3 squares
The given figure is an example of
A1st class lever
B2nd class lever
C3rd class lever
DBoth A and B
Please explain me the answer of this question.
Mirage is formed in desert areas due to
ATotal internal reflection
can someone explain?
Which of the following statements below should be used while using the symbol for a unit of a physical quantity?
(A) The symbol named after scientist should have capital letter.
(B) They take plural forms
(C) They can be written in full.
(D) They should be written only in the agreed symbols.
Refer to the given food chain operating in a small pond.
An organism ‘X’ was introduced in the community which exclusively feeds on tadpole population. Which of the following graphs correctly shows the changes in populations of water insect and small fish over time after introduction of organism X?
Can somebody pls explain the solution