Study the diagram and answer the following questions: 1. What kind of mirror is used?
2.What are CO, OF, AB, F and XY called?
3. Write down the relation between OC and OF.
4. Complete the given diagram.
5. Write down the position and nature of the image formed.

Answer asap

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.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration