Discussion
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- Question
Which method of expressing direction is indicated in the illustration?
Options- A. Section
- B. Interjuction
- C. Intersection
- D. None of the above
- Correct Answer
- Intersection
- 1. Which results in an increase in power?
Options- A. doing more work in less time.
- B. doing less work in more time.
- C. doing less work in less time.
- D. doing more work in more time. Discuss
- 2. Malleability and Ductility of metals can be accounted due to
Options- A. the crystalline structure in metal
- B. the interaction of electrons with metal ions in the lattice
- C. the presence of electrostatic force
- D. the capacity of layers of metal ions to slide over the other Discuss
- 3. What is the main function of an ignition safety switch? Discuss
- 4. Air pressure is measured in which of the following units?
Options- A. Steridian
- B. kg/mts
- C. Newton
- D. Pascal Discuss
- 5. What frequency range is the high frequency band?
Options- A. 3 kHz
- B. 3 to 30 MHz
- C. 30 to 300 MHz
- D. 10 GHz Discuss
- 6. Which alternative energy source is exhaustible?
Options- A. tidal energy
- B. wind energy
- C. solar energy
- D. geothermal energy Discuss
- 7. what is the source of energy for the water cycle?
Options- A. Rain water
- B. Sun
- C. Clouds
- D. Animals Discuss
- 8. Sources of geothermal power are
Options- A. water
- B. earth's heat
- C. Both A & B
- D. None of the above Discuss
- 9. Which of these is not a simple machine?
Options- A. a pair of scissors
- B. a lever
- C. a ramp
- D. the pulley Discuss
- 10. Which of the following definitions describes a physical hazard?
Options- A. The most commonly thought of hazard in construction. This hazard includes radiation, extreme temperatures, noise, and vibration.
- B. These hazards can lead to injuries to the joints or muscles by way of heavy, frequent lifting, repetitive tasks.
- C. Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or released during a construction job
- D. Microorganisms, such as bacteria, fungus, mold, or viruses that can cause illness. Discuss
Physics problems
Search Results
Correct Answer: doing more work in less time.
Explanation:
Doing more work in less time, results in an increase in power to do a work.
Correct Answer: the capacity of layers of metal ions to slide over the other
Correct Answer: An ignition safety switch is a safety device can shut off the engine if the operator falls off the PWC or out of the powerboat, or is otherwise thrown from the proper operating position How it works: It allows the engine of the vehicle to shut off or to be turned off immediately as it is to prevent further complications to happen as this is being used when an emergency is launched Where it is used: Most powerboats and PWCs come equipped by the manufacturer with an emergency engine cut-off switch
Correct Answer: Pascal
Explanation:
Pressure = (Net Force) / (Applied area) = Newton / square meters
Measuring units of pressure are:
. Pascal
. Bar
. Torr
. Pounds per square inch (psi)
. Standard atmosphere (atm).
Correct Answer: 3 to 30 MHz
Explanation:
The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.
Correct Answer: geothermal energy
Explanation:
Based on conventionality in deriving energy, energy sources could be classified as
Conventional ::
coal, oil, hydro, nuclear, etc... sources which can be used up or exhaustible.
(and)
Non - conventional ::
solar, wind, tidal, geothermal, biogas, etc... sources which are not exhausted.
Among the given options, Geothermal energy is the alternative energy source among all the choices that are given in the question, that is exhaustible.
Correct Answer: Sun
Correct Answer: Both A & B
Correct Answer: a pair of scissors
Explanation:
Any of the basic mechanical devices for applying a force are called simple machines.
There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.
Correct Answer: The most commonly thought of hazard in construction. This hazard includes radiation, extreme temperatures, noise, and vibration.
Explanation:
A physical hazard is defined as "A factor within the environment that can harm the body without necessarily touching it."
Vibration and noise are examples of physical hazards.
Physical hazards include but aren't limited to electricity, radiation, pressure, noise, heights and vibration amongst many others.
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