QUICK, SHOW WORK PLS The radius of the Earth may be taken to be
6,371 km. Assume a satellite is in orbit at an
altitude he above the Earth, so R =
6,371+he km. If the period of the orbit of the
satellite around the Earth is 90.0 min, what is
the altitude, he, of the satellite (km)?
he = [ ? ] km

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?