Cleaning impurities

Q:

1. Is merely wiping with a tissue or cloth considered to remove impurities and make an object paak?

2. If there is impurity on the floor and it dries naturally, is the floor considered paak?

3. Whilst flushing, there is spray from the toilet bowl, and it lands on the toilet seat and sometimes the floor. Is this spray considered to be impure or is it excused.

4. Is a washing machine considered to clean impurities.

5. Can I clean hard surfaces by spraying with water and then wiping instead of pouring?

Making ghusal without soap

Q:

1. If one takes ghusal without any soap and sampoo and just uses the water, will ghusal be valid ? I just went in rinsed the dirt off my body and made ghusal normally and came out.

2. If one has mistakenly had a pee drop in the underpants would ghusal be waajib?

3. How does one take ghusal at sea and would ghusal be accepted if there is others swimming in the ocean as well while one just went in to swim with a shorts. Would the ghusal be valid is one's owra is open?

Baseless belief

Q: I just wanted to ask on behalf of a relative if a woman becomes a widow and her husband leaves behind money, land and property, is she not allowed in Islam to spend anything, money/inheritance for a year after the husbands death? Is this a true in our religion or mentioned in a Hadith anywhere? What is the truth about this question.