we now the Earth is round .but .the earth is moving .but also some time we go to the under when the earth is moving .but why we cant fall?

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form