16.What factor/s determines the highest or lowest power output?
a. weight and height
b. height and time
c. work and time
d.weight and energy
17. Who among the group members has the lowest energy output? * 1 point Bella Troy Elijah Mae 18. Sound wave is a mechanical wave because _____. *
a. it propagates well in a vacuum.
b. it needs a medium to propagate.
c.it needs only air molecules to propagate.
d. it does not need a medium to propagate. For item number
19-21 refer to the table below.
19. Through which material sound travels fastest?
a. Air at 40°C
b. Aluminum
c. Lead
d. Gold
20. Which material is widely used in making telephone wires?
a. Aluminum
b. Copper
c. Lead
d. Gold
help po summative po yan
wag pong sasagot kung di alam ang sagot
a. weight and height
b. height and time
c. work and time
d.weight and energy
17. Who among the group members has the lowest energy output? * 1 point Bella Troy Elijah Mae 18. Sound wave is a mechanical wave because _____. *
a. it propagates well in a vacuum.
b. it needs a medium to propagate.
c.it needs only air molecules to propagate.
d. it does not need a medium to propagate. For item number
19-21 refer to the table below.
19. Through which material sound travels fastest?
a. Air at 40°C
b. Aluminum
c. Lead
d. Gold
20. Which material is widely used in making telephone wires?
a. Aluminum
b. Copper
c. Lead
d. Gold
help po summative po yan
wag pong sasagot kung di alam ang sagot
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Answer:
16. D weight and energy
The power quality in any given system can be described by several key metrics, which include voltage and frequency values, power factor, electrical harmonics, and output waveform.
17.A it propagates well In a vacuum
Industries that are less energy-intensive include the manufacture or assembly of automobiles, appliances, electronics, textiles, and other products.
18.C it needs only air molecules to propagate.
As particles continue to displace one another with mechanical vibrations, the disturbance is transported throughout the medium. These particle-to-particle, mechanical vibrations of sound conductance qualify sound waves as mechanical waves.
19.A air at 40°C
Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.
20.B copper
Most telephone wire are one or more twisted pairs of copper wire. The most common type is the 4-strand (2 twisted pair). This consists of red and green wires, which makes a pair, and yellow and black wires, which makes the other pair. One telephone wire line needs only two wires.
Explanation:
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