7. Solve these problems: 1. Suppose that you have four electric cells. The current capacity of each cell equals 1.5 amp, the voltage output equals 2 V. a) Connect the cells in series. In what way should it be done? b) Connect the battery to a circuit whose resistance value equals I 5 ohms. What is the value of current in the circuit? 2. Suppose that you have three cells of the same value. a) Connect them in parallel. In what way should it be done? b) Connect the second battery to the same circuit: what will it result in? Suppose that one of the cells stops operating. What should be done in this case?

have.

must.

could.

graffiti - images, pictures or inscriptions scratched, written or drawn in ink or paint on the walls and other surfaces. by the graffiti include any form of street painting walls, where you can find everything from simple written words to exquisite drawings.in historical science, the term was used long ago, but in a narrower sense. when it comes to ancient epigraphic monuments, and then share the notion of "graffiti" and "dipinti." if the latter denotes the inscriptions are painted "graffiti" - scratched inscription (the term itself comes from the italian verb graffiare - «scratch").at present, widely used spray-art, ie painting graffiti with spray paint.

my room very beautiful. it very simple and convenient. in my room wall-paper of coffee colour. on a floor the light carpet, it very beautiful is established! on the middle the big window is established, it is with is left from a door. on the right there is a door. on-seridine rooms there is a sofa. it big and convenient, i on it have a rest. in a room there is a computer, it costs on a special little table for the computer, still there are many shelves in them there are my school accessories and my things. here such my room!

our centure is a centure of disasters. accordint to scientists's researces the mojority part of all disasters ar couses and effects is global warming. first of all global warming usually leads to improving level of water.