placing a magnetically hard material in a strong magnetic field
Answer:
The type and length of a lunar eclipse depend on the Moon's proximity to either node of its orbit. ... A total lunar eclipse can last up to nearly 2 hours, while a total solar eclipse lasts only up to a few minutes at any given place, due to the smaller size of the Moon's shadow.
Answer:
The volume of 3200 kg of petrol is 4 m^3.
You should select Choice-4 .
