In the circuit shown below, 0.25 A of current flows through a 20-Ω resistor. How much voltage is needed to produce this current? A. 80 V
B. 0.013 V
C. 19.75 V
D. 5 V

Which statement about covalent bonds is true

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation