Calculate the Focal length of concave mirror when an object placed at distance of 40 cm makes image equal to size of object.

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions