Dolphins can swim at about 9 meters per second. How much kinetic energy would a dolphin have while swimming at this speed if its mass was 200kg?​

Positrons are spontaneously emitted from the nuclei of

A4.0-cm tall light bulb is placed a distance of 32.0 cm from a concave mirror having a focal length of 16.0 cm. determine the image distance

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3