Two vectors A⃗ and B⃗ are at right angles to each other. The magnitude of A⃗ is 4.00. What should be the length of B⃗ so that the magnitude of their vector sum is 9.00?

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? round your answer to the nearest tenth. s how far will the football travel before it lands? round your answer to the nearest tenth. m