Alimentând o bobină cu tensiunea continuă U=120V, prin circuit se stabilește un curent I=10A. Dacă la bornele aceleiași
bobine se aplică o tensiune alternativă cu valoarea efectivă U1 =U și frecvența ϑ=50Hz, valoarea efectivă a curentului electric prin circuit este I1 =6A. Să se calculeze:
a) rezistența și inductanța bobinei;
b) reactanța inductivă și impedanța bobinei pentru frecvența de lucru ϑ=50Hz.

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom