Question

give reasons for the following 1; when we push a wall no work is done 2: it's difficult to hold a wet soap3: give one similarity among earthworms leeches and sponges

Answer 1

1 . As we know work done is the product of force and displacement, here we apply force but displacement is zero so there is no work done.
2. because in the preparation of soap one of the ingredient is oil which makes it difficult to hold a wet soap
3. all these 3 organisms belong to kingdom animalia and require moist region.

Answer 2

As we know work done is the product of force and displacement, here we apply force but displacement is zero so there is no work done.

2. because in the preparation of soap one of the ingredient is oil which makes it difficult to hold a wet soap

3. all these 3 organisms belong to kingdom animalia and require moist region.