A certain planet has an escape speed V. If another planet has the same mass and twice the size of the first planet, its escape speed will be
1. 2V.
2. V
3. V/√.2
4. V/2.
5. √2V.

d is the correct answer

v 154.9= 0.9 length length s little over 154.9cm

the part of the wave he is travelling on is the crest

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.