5. It takes 15 minutes to warm up from 10°C to 20°C in a room whose temperature is 30°C. Assuming Newton's law of cooling, how long would it take to warm up from 10°C to 25°C?
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- Compare the geo-thermal technologies used at different temperatures.There was basically no electricity 150 years ago. Tesla, Edison and Faraday were experimenting and it was believed to be dangerous, so no electric anything. They used wood and coal fired brick and iron ovens and fire places. The lighting was oil and gas lamps and candles, hence the saying “Burning the midnight oil.” I have lived with little (generators and solar power) or no electricity in the deep desert in Saudi Arabia, in the mountains on expeditions and after hurricanes Irene and Maria in the Caribbean. Today fossil fuels and electricity are the foundation of our civilization. How will we continue to make electricity in the future? Any other research examples?What is geothermal energy? What are two advantages associated with geothermal energy? What are two disadvantages associated with geothermal energy? What kind of machinery/apparatus can we use to convert geothermal energy into electricity?
- Why have we become so addicted to electricity?(200 words)There was basically no electricity 150 years ago. Tesla, Edison and Faraday were experimenting, and it was believed to be dangerous, so no electric anything. They used wood and coal fired brick and iron ovens and fireplaces. The lighting was oil and gas lamps and candles, hence the saying “Burning the midnight oil.” I have lived with little (generators and solar power) or no electricity in the deep desert in Saudi Arabia, in the mountains on expeditions and after hurricanes Irene and Maria in the Caribbean. Today fossil fuels and electricity are the foundation of our civilization. How will we continue to make electricity in the future? Any other research examples?ELECTROSTATICS ELECTRIC FIELD AND FIELD STRENGTH Please refer to the answer
- Which of the following pairs of quantity and unit are correct? Select one or more: a. density-kilograms per square meters b. current-ohms c. pressure-pascals d. launch angle-degrees e. resistance-amperes f. weight-newtonsDetermine the resistance of a copper conductor with a diameter of 6mm and a length of 20m.The resistivity of copper is 1.7?10−8 ohm-meters.2. Find out, and in your own words write what differences in electrical behavior obey.between one material and another (conductors, semiconductors and insulators).3. A copper wire has a resistance of 10Ω at 50 ° F, what resistance will it have at 70 ° C?4. If we have a single-phase motor at a distance of 100 meters and its nameplate registers the followingdata. U = 120V / In = 25th. Calculate the potential drop over the electrical conductor. If we measure at the terminalsconnection of the motor How much would be the voltage registered in the Voltmeter?5. Considering the scheme of the voltage divider (voltage divider) shown in the followingImage, Design the circuit calculating its resistances (R1 and R2) to obtain an output voltage ???? of 5Vmaximum dc, taking into account that the input voltage ??? is 30V dc. (Use values greater than or equal…Determine the resistance of a copper conductor with a diameter of 6mm and a length of 20m.The resistivity of copper is 1.7?10−8 ohm-meters.2. Find out, and in your own words write what differences in electrical behavior obey.between one material and another (conductors, semiconductors and insulators).3. A copper wire has a resistance of 10Ω at 50 ° F, what resistance will it have at 70 ° C?4. If we have a single-phase motor at a distance of 100 meters and its nameplate registers the followingdata. U = 120V / In = 25th. Calculate the potential drop over the electrical conductor. If we measure at the terminalsconnection of the motor How much would be the voltage registered in the Voltmeter?5. Taking into account the scheme of the Voltage divider (voltage divider) shown in the followingImage, Design the circuit calculating its resistances (R1 and R2) to obtain an output voltage ???? of 5Vmaximum dc, taking into account that the input voltage ??? is 30V dc. (Use values greater than or…
- 1. Calculate the self inductance of a coil if a rate of change of current of 5 amperes per second produces a back emf of 2 volts. 2. Two long parallel conductors carrying 1000A in the same direction are spaced 15 cm apart. Calculate the force per meter run acting on each conductor.11. A rubber balloon has a single point charge in its interior. Does the electric flux through the balloon depend on whether or not it is fully inflated? Explain your reasoning. 12. Explain how the electric force plays an important role in understanding each of the following: (a) the friction force between two objects, (b) the hardness of steel, and (c) the bonding of amino acids to form proteins.What are the basic/necessary steps to design a pico hydro power plant? Inlcude the parts of generator and all other parts of the system.