The tip of a pinwheel is 0.24 m from the center. the pinwheel spins 5 times each second. what is the tangential speed of the tip of the pinwheel? 0.30 m/s 1.2 m/s 1.5 m/s 7.5 m/s

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

The force it would take to accelerate an 900-kg car at the rate of 6m/s2