John weighs 100 N on Earth (g=10 m/s2) and Mary weighs 100 N on the Moon (g=1.6 m/s2) . Which of the following statements about John and Mary’s masses is true? A.
John’s mass is greater than Mary’s

B.
Mary’s mass is greater than John’s

C.
None of the above

D.
Mary and John have the same mass

howdy howdy!

i'd say it would be galileo!

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.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards