In which of the following activities is work done
(A) A boy shaking a tree
(B) Ali pushing against the wall
(C) A man pushing a stalled car
(D) A worker pushing a loaded car.
In options C and D, it is not indicated whether the car has moved or not. How do I then understand as to whether work has been done or not?
Which of the following correctly shows the water level when a beaker of water is tilted ?
The graph below shows the number of visitors to the Fish Farm in various months. Study the graph carefully and answer the questions.
There were _____ more visitors in February than in January.
Answer should be B. Kindly correct it.
When a little bit of curd is added to milk and it is left undisturbed for sometime, the milk changes into curd. It is an example of
(A) Fast chemical change
(B) Fast physical change
(C) Slow chemical change
(D) Slow physical change.
can you explain how is it a slow chemical change as its written after sometime