An astronaut who weighs 700.0 N is standing on a scale in a rocket ship that is near the earth and is accelerating away from the earth at 10.00 m/s 2 . What is
the reading on the scale?

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

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

Ajetliner flies east 2000 miles from san francisco to chicago. it has an average air speed of 600 mph relative to the air. what is the velocity of the jetliner relative to the earth if the wind is blowing at 150 mph from the west to east