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notsponge [240]
3 years ago
14

How does the vertical component of a projectile’s motion compare with the motion of vertical free fall when air resistance is ne

gligible?
Physics
1 answer:
likoan [24]3 years ago
5 0

Answer:

Explanation:

The vertical component of velocity remains same as the free fall. The vertical motion of the projectile is same as the free fall motion.

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The answer is Seismograph
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An electric pump has 2kW power . How much water will it lift every minute if the height is 10 m ?
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Answer:

Given that,

  • Power = 2000 W
  • time = 60 seconds
  • distance= 10m

Power = work done ÷ time

Here, since the movement is vertical, w = mgh

So,

Power = mgh÷t

2000 = (m × 9.8 ×10) ÷ 60

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Two sound waves (wave X and wave Y) are moving through a medium at the same speed. If wave X has a greater frequency than wave Y
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Answer:

Wave X has a shorter wavelength.

Explanation:

The relation between the speed of a wave, its wavelength and frequency is given by :

v=f\lambda

It can be seen that the relationship between the frequency and wavelength is inverse.

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igomit [66]

Answer: Linear speed is 1,670 Kph.

Explanation:

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ω = 2π / 24 Hr

Now, by definition, an angle is the relationship between the arc s, and the radius r, so we can replace these values in the angular velocity expression, as follows:

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v = 2π /24 hr . 6378 Km = 1,670 Km/hr.

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