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- Question
The law of conservation of mass states that mass cannot be changed overtime.
Options- A. TRUE
- B. FALSE
- Correct Answer
- TRUE
ExplanationThe law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.
Hence, the given statement is true.
- 1. What property of matter is momentum related to?
Options- A. mass
- B. velocity
- C. Both A & B
- D. None of the above Discuss
- 2. The composition of electrician solder is
Options- A. lead-37%, tin-63%
- B. Iron-37%, tin-63%
- C. lead-37%, Steel-63%
- D. Steel-37%, copper-63% Discuss
- 3. When does land breeze occur?
Options- A. Fall
- B. Winter
- C. Both A & B
- D. Hot summer Discuss
- 4. Materials that usually are good conductors of electricity?
Options- A. Aluminium
- B. Lead
- C. Nickel
- D. Wood Discuss
- 5. The stability triangle is used to describe Discuss
- 6. Which of the following is a renewable resource of energy?
Options- A. Hydrogen fuel
- B. Wind energy
- C. Solar energy
- D. All of the above Discuss
- 7. What type of simple machine is an axe?
Options- A. Lever
- B. Wedge
- C. Both A & B
- D. The screw Discuss
- 8. Ampere second could be the unit of
Options- A. Power
- B. Energy
- C. Conductance
- D. Charge Discuss
- 9. The rate of flow of electric charge is measured in
Options- A. ampere
- B. coulomb
- C. ampere/coulomb
- D. ampere-coulomb Discuss
- 10. Which waves cannot be transmitted through vacuum?
Options- A. Electromagnetic
- B. Light
- C. Sound
- D. Heat Discuss
Physics problems
Search Results
Correct Answer: Both A & B
Explanation:
At any given speed, momentum is directly proportional to mass of an object.
Correct Answer: lead-37%, tin-63%
Correct Answer: Both A & B
Explanation:
Land breezes are more common during winter and fall season. It occurs as it becomes night, the air on the land colls fast and air on the water surface are warmth than that and begin to rise.
Correct Answer: Aluminium
Explanation:
Materials that usually allow electricity to pass through them are called Good conductors of electricity.
Conductors conduct electrical current very easily because of their free electrons.
Examples are :: Aluminium, Gold, Copper, Silver
Materials that do not allow or oppose electrical current & make poor conductors are called Insulators.
Examples are :: Glass, Plastic, Wood, Air,...
Correct Answer: The stability triangle is used to describe the movement of center of gravity of a load vehicle like trucks If the load is not balanced then it moves and may tip over it If you were to raise a lift truck up and look at its underside, you would see that the support points for the truck are located at points A, B, and C The triangle formed between points A, B, and C is called the Stability Triangle The lift truck will not tip over as long as the center of gravity remains inside the triangle The center of gravity is the point within a lift truck where there is equal weight all around it
Correct Answer: All of the above
Explanation:
Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.
Correct Answer: Both A & B
Correct Answer: Conductance
Correct Answer: ampere
Correct Answer: Sound
Explanation:
Sound waves cannot be transmitted through vacuum.
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