Measurement ... the slope of the graph. Formula T=2.π. √ l/g[no derivation]. Only simple numerical problems. 2. Motion in One Dimension Scalar and vector quantities, distance, speed, velocity ...

Apple's Measuring app is handy and quick, but is it accurate? To find out, we went hands on and compared between it and real ...

"We know that daytime migratory insects use the sun, so testing the starry sky seemed an obvious thing to try." ...