( WHY HUMANS CAN'T LIVE OFF SUNLIGHT) The author mentions that Shine made several mistakes in her experiment. Describe one major mistake that Shine made. PLZ ANSWER QUICKLY

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Which accurately compares concave and convex lenses?