Find the Celsius temperature change of a river due to the exhausted energy from a nuclear power plant. Assume that the input power to the boiler in the plant is 1.4 * 10 ^ 9 * W the efficiency of the use of this power is 20 \% , and the river flow rate is 1.3*10^ 7 kg/min . The specific heat of water is 4186 J/kg*^ C

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Could we see a galaxy that is 20 billion light-years away?