When all parts of a circuit are composed of conducting materials, the circuit is said to be
a. closed.
b. open.
c. parallel.
d. shorted.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Abanked road comer of radius 146 m is to be constructed. if the comer is designed for vehicles moving with a speed of 20.0 m/s, what should the banking angle be, in units of degrees?

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?