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- Question
Which of the following is a compound machine?
Options- A. Screw
- B. Knife
- C. Bicycle
- D. Ramp
- Correct Answer
- Bicycle
ExplanationBicycle is a compound machine in the above given options. A compound machine is a machine that is formed by two or more simple machines.
- 1. Materials that allow electricity to flow are called
Options- A. Insulators
- B. Conductors
- C. Electron flows
- D. Stimulators Discuss
- 2. What is another name for energy of motion?
Options- A. Motional energy
- B. Potential energy
- C. Kinetic energy
- D. Rotational energy Discuss
- 3. Which resource is both renewable and inexpensive?
Options- A. Sunlight
- B. Coal
- C. Gold
- D. Minerals Discuss
- 4. Heat energy is transferred by conduction whenever molecules
Options- A. collide each other
- B. means of photons
- C. particles replaces there places
- D. All of the above Discuss
- 5. What is a property of most metals?
Options- A. Conductivity
- B. Malleability
- C. Luster
- D. All of the above Discuss
- 6. The mass defect is the result of what action occurring?
Options- A. mass being converted to energy when protons and neutrons bind together in a nucleus
- B. protons and electrons being attracted to each other
- C. energy being converted into moles of atoms when neutrons break apart protons
- D. mass being converted to energy when protons and neutrons break apart in a nucleus Discuss
- 7. Wind and solar energy are examples of
Options- A. Finite energies
- B. Renewable energies
- C. Non renewable energies
- D. None of the above Discuss
- 8. Which of the following is not an intrusive igneous body?
Options- A. Stock
- B. Dike
- C. Stope
- D. Batholith Discuss
- 9. Persistence of vision is the principle behind
Options- A. Telescope
- B. Periscope
- C. Cinema
- D. Microscope Discuss
- 10. Which microscope is often used to view metal surfaces?
Options- A. Optical microscopes
- B. Scanning tunneling microscopes
- C. Electron microscopes
- D. None of the above Discuss
Physics problems
Search Results
Correct Answer: Conductors
Correct Answer: Kinetic energy
Explanation:
Every object has two typea of energies. They are ::
Potential energy
Kinetic energy
If the object is in motion, then it has Kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object.
Hence, another name for energy of motion is called Kinetic energy.
Correct Answer: Sunlight
Explanation:
A resource is a source or supply from which a benefit is produced. Resources can be broadly classified upon their availability they are renewable and non renewable resources.
Renewable Resources :: A resource that can be replenished after use are known as Renewable resources.
Examples :: Sunlight, Water, biomass,...
Non renewable Resources :: A resource that, once used, is no longer available are known as Non renewable Resources.
Example :: Coal, fossil fuels, natural gas,...
Sunlight is the both renewable and inexpensive resource from the given options.
Correct Answer: collide each other
Explanation:
Heat energy can be transferred by three major methods. They are
1. Conduction,
2. Convection and
3. Radiation.
Conduction is the movement of heat through a substance by the collision of molecules
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy.
Radiation is the transfer of energy by means of photons in electromagnetic waves governed by the same laws. It occurs through a vacuum or any transparent medium.
Correct Answer: All of the above
Explanation:
We know that most of the metals are goof conductors of electricity and heat. Metals are very strong but they are malleable i.e, they can be bent into a shape. These are shiny when they are cut or polished.
Hence, metals are malleable, conductors and luster. All the above are properties of the metals.
Correct Answer: mass being converted to energy when protons and neutrons bind together in a nucleus
Correct Answer: Renewable energies
Correct Answer: Stope
Explanation:
These are called intrusive igneous rocks because the magma has intruded into pre-exiting rock layers. Types of intrusive igneous rocks are granite and basalt .
A batholith is the largest of the intrusive bodies.
Correct Answer: Cinema
Explanation:
Optical illusion is what that refers to persistence of vision with a principle that multiple images blend into a single image in human mind and what is showed in cinema.
Hence, Persistence of vision is the principle behind cinema.
Correct Answer: Scanning tunneling microscopes
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