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- Question
Magnetism in materials is due to
Options- A. Displacement of electrons
- B. Circular motion of electrons
- C. Charges of neutrons
- D. All of the above
- Correct Answer
- Circular motion of electrons
ExplanationMagnetism in materials is due to circular motion of electrons.
- 1. Thermohaline circulation is mainly due to
Options- A. cold, dense ocean water sinking and warmer water replacing it
- B. winds causing circulation of ocean water
- C. warmer, less dense water sinking in the ocean and cold water replacing it
- D. warm water being added to the ocean due to industial waste Discuss
- 2. What type of heat transfer is boiling water?
Options- A. radiation
- B. conduction
- C. convection
- D. None of the above Discuss
- 3. The odometer guage indicates
Options- A. the distance travelled by a vehicle
- B. the depth of the ocean
- C. pitch length
- D. frequency of the wave Discuss
- 4. A spring is an example of which of these
Options- A. Newton's 3rd law
- B. Hooke's law
- C. Newton's 1st law
- D. Conservation of mass law Discuss
- 5. Which is a correct way to measure wavelength?
Options- A. Nearest peak to peak
- B. Nearest peak to nearest trough
- C. Nearest trough to peak
- D. None of the above Discuss
- 6. The temperature at which water boils depends mainly on
Options- A. Air Pressure
- B. Specific heat
- C. Density
- D. Relative humidity Discuss
- 7. Electric charges that are different attract each other.
Options- A. TRUE
- B. FALSE Discuss
- 8. Granite is the examples of which rock ?
Options- A. Igneous rock
- B. Sedimentary rock
- C. Calcareous rock
- D. Matamorphic Discuss
- 9. Which of the following has the shortest wavelength?
Options- A. Gamma rays
- B. Radio waves
- C. Microwaves
- D. Infrared rays Discuss
- 10. Conservation of energy refers to the fact that
Options- A. if you conserve energy you will not be as tired
- B. energy cannot be created or destroyed but can be converted from one form to another
- C. no chemical reaction is 100 percent efficient
- D. the entropy of the universe is always increasing Discuss
Physics problems
Search Results
Correct Answer: cold, dense ocean water sinking and warmer water replacing it
Correct Answer: convection
Explanation:
Convection is by far the most efficient and common way for heat to be transferred through liquids and gases. It occurs when some regions of a fluid get hotter than others, causing currents in the fluid that move it around to distribute that heat more evenly.
Correct Answer: the distance travelled by a vehicle
Explanation:
The odometer or the odograph is an instrument used to indicate the distance travelled by the vehicle.
Correct Answer: Hooke's law
Explanation:
When you compress or stretch a spring, as soon as the stress is relieved, the spring attains its normal shape instantly. Its Elastic potential energy helps it do so. Generally, these elastic substances follow the Hooke?s law.
According to this Law, the force needed to change the shape of spring is proportional to the displacement of the spring. The displacement referred here is how far the spring is compressed or stretched from its normal shape. Mathematically, Hook?s Law can be summarised as F= ? k x. Here ?k? is the spring constant and ?x? is the displacement.
Correct Answer: Nearest peak to peak
Explanation:
Wavelength of a wave can be measured with the distance between two nearest crest and crest or nearest troughs. It is measured as armstrong units.
Correct Answer: Air Pressure
Explanation:
The temperature at which water boils depends mainly on air pressure.
Correct Answer: TRUE
Correct Answer: Igneous rock
Explanation:
It forms slow crystallization of magma below Earth's surface.Granite is a hard light-colored igneous rock and it is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles and other minerals it is mainly used for building and monuments
Correct Answer: Gamma rays
Explanation:
Gamma rays has the shortest wavelength and radio waves has the longest wavelength.
Correct Answer: energy cannot be created or destroyed but can be converted from one form to another
Explanation:
"Conservation of energy" refers to the fact that energy cannot be created or destroyed but can be converted from one form to another.
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