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- Question
Where does hydroelectric energy come from?
Options- A. Air
- B. Water
- C. Solar
- D. All of the above
- Correct Answer
- Water
- 1. Magnetic field lines about a current-carrying wire
Options- A. circle the wire in closed loops
- B. extend radially from the wire
- C. both of these
- D. None of the above Discuss
- 2. Middle latitude cyclones are fueled by?
Options- A. air high in the atmosphere
- B. polar continental air masses
- C. energy from falling precipitation
- D. All of the above Discuss
- 3. Long Sightedness means
Options- A. near images are blurry
- B. far images are blurry
- C. Both A & B
- D. None of the above Discuss
- 4. Second and third class levers are differentiated by
Options- A. the location of the load
- B. the location of the fulcrum
- C. the presence of multiple loads
- D. the type of fulcrum present Discuss
- 5. Which elements are malleable and good conductors of electricity?
Options- A. tin and silver
- B. iodine and silver
- C. tin and xenon
- D. iodine and xenon Discuss
- 6. The GPS device in an automobile uses which communication channel?
Options- A. Satellite
- B. Microwave
- C. Radio frequency
- D. Infrared Discuss
- 7. The combined gas law relates which of the following?
Options- A. Volume & Temperature
- B. Temperature & Pressure
- C. Volume & Pressure
- D. Volume, Temperature & Pressure Discuss
- 8. Which is evidence that supports the dynamo theory?
Options- A. Earth's outer core contains liquid that conducts electricity
- B. Earth's core contains a large amount of iron
- C. Granite and basalt conduct electricity
- D. Convection occurs in Earth's inner core Discuss
- 9. Which color has the highest energy?
Options- A. Violet
- B. Red
- C. Blue
- D. White Discuss
- 10. The rate at which energy is transferred is called
Options- A. Power
- B. Watt
- C. Volt
- D. Potential Discuss
Physics problems
Search Results
Correct Answer: circle the wire in closed loops
Explanation:
Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire.
Correct Answer: air high in the atmosphere
Explanation:
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth.
Middle latitude cyclones are fueled by air high in the atmosphere.
Correct Answer: near images are blurry
Correct Answer: the location of the load
Correct Answer: tin and silver
Explanation:
Tin and Silver are malleable and good conductors of electricity. The other combinations have a non metal in them which are bad conductors.
Correct Answer: Satellite
Explanation:
All automobiles uses satellite communication channel for their GPS devices.
Correct Answer: Volume, Temperature & Pressure
Explanation:
The combined gas law states that the ratio between the pressure-volume product and the temperature of a system remains constant.
Hence it depends on all the three Volume, Temperature & Pressure.
Correct Answer: Earth's core contains a large amount of iron
Explanation:
In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.
Earth's crust core contains a large amount of iron and nickel is the evidence of the dynamo theory.
Correct Answer: Violet
Explanation:
Violet colour has the highest energy. The higher the frequency, the faster the oscillations and thus the higher the energy. Therefore, the highest-frequency ultra-violet light or the lowest wavelength is violet.
Correct Answer: Power
Explanation:
Energy can be transferred from one system to the other. The rate at which energy is transferred from one system to other system is called POWER. Energy transferred in one second is called a watt.
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