- 03 Fill in the Blank Text To calculate density you have to divide the object's square by the object's square 04 Multiple Choice Lily is trying to find the density of her pencil. She places it on the scale and notes that it is 15g . Since it has an irregular shape she decides to use the displacen nent method with a graduated cylinder to get the volume The water line moves from 30mL to 35mL. so she determines that the density of her pencil is 5g/mL . What did she do wrong? Nothing, her answer is correct She used a scale to get the mass instead of a graduated cylinder She forgot to find the pencil's length before putting it in the water She needed to use the volume from the displacement to calculate density 0/1 0/1
- 12. Oripenentre CKOPOCT5 pa3/10XKEHHS MeraHa, ecru 3a 20 MHH. ero KOHIEHTPaLINA MeHblllllacb C 0,8Mopi b/pi no 0,5MoJb/pi
- Task 7. Choose a word to put into each gap: large, the plates, the farad, the capacitance, inserted, dielectric large area, increased a capacitor, device 1 A capacitor is an electrical __ for storing quantities of electricity. 2. The general form of __ is what of two parallel conducting plates 3. Such plates are of relatively __ close together, and contain between them a non-conducting medium called the dielectric .4. Common __ are air, glass, oil and waxed paper. 5 To increase the capacitance of a capacitor the following changes can be made: first, the area of the plates may be ...6. Second __ may be put closer together. 7. Third, a more suitable dielectric may be __ between the plates. 8. If the plates of a capacitor are small in area and far apart __ is small. 9. If the area is __ and plates close together, the capacitance is large. 10 The unit of capacitance __ named in honour of Michael Faraday.
- Variant 2 Task 1. Read the text and give the title: Matter is defined as any substance which has mass (or weight) and occupies space. This definition should be broad enough to cover all physical objects in the universe. Wood, water, iron, and paper are some examples of matter Energy is closely related to, but not to be confused with, matter. Energy does not have mass, and it does not occupy Heat and light are examples of energy. The smallest particle of matter which can be recognized as an original substance was thought to be a unit called the atom. Recently scientists have found particles even smaller than atoms, but our theories are still based on the atom The atom consists of a nucleus and a cloud of electrons. It is generally agreed that the electrons are small particles of electricity, which are negative in nature. These particles orbit the nucleus in much the same fashion that planets orbit a sun. Task 2. Answer the questions; use the information from the text: 1) Give the definition of matter. 2) Is energy related to matter? What is the difference between matter and energy? 3) What is the smallest particle of matter? 4) What parts does an atom consist of? 5) Are the electrons negative or positive in nature?
- 10. Donner les définitions de l'hystére magnétique, de l'aimantatior résiduelle, de la force coercitive.
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