A dumbbell-shaped object is composed by two equal masses, mm , connected by a rod of negligible mass and length rr . If I1I1 is the moment of inertia of this object with respect to an axis passing through the center of the rod and perpendicular to it and I2I2 is the moment of inertia with respect to an axis passing through one of the masses, it follows that

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.

false

hope this : d