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Alla [95]
2 years ago
11

Physics teacher guide grade 9​

Physics
1 answer:
jekas [21]2 years ago
5 0
What are you asking??
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Calculate the velocity of an apple that falls freely from rest and drops for 3.5 seconds.
padilas [110]

Answer:

initial velocity(u)=0

time(t)=3.5sec

acceleration (a)=9.8m/s²

final velocity (v)=?

Explanation:

we have

v=u+at=0+9.8×3.5=34.3m/s

6 0
3 years ago
If a car is traveling at an average speed of 60 kilometers per hour, how long does it take to travel 12 kilometers?
Otrada [13]

Answer: 0.2 hour

Explanation:

Speed = Distance / Time

Time = Distance / Speed

= 12/60

= 0.2 hour

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3 years ago
A simple motor converts ________energy into________energy.
k0ka [10]
I think it is C. I hope I helped.
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3 years ago
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What happens to energy and frequency of a wave if its wavelength increases?
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Answer:

Waves can be measured using wavelength and frequency. ... The distance from one crest to the next is called a wavelength (λ). The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease.

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3 years ago
What is unusual about the results of mass determinations of clusters of galaxies?
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I think it's bigger than most galaxies

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2 years ago
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