Hurry! give three examples of magnetic force that you would have in a house.

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.

Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon