Me fast

1.) which statement is true about this magnet and nails?

a.) both the magnet and the nails are temporary magnets.

b.) the nails are temporary magnets.

c.) both the magnet and the nails are permanent magnets.

d.) the nails are permanent magnets.

mark as brainiliest !

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i. e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Observations show that interstellar clouds can have almost any shape and