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AnnZ [28]
3 years ago
7

Which of the following are examples of levers?

Physics
1 answer:
Ivanshal [37]3 years ago
7 0

Answer:

I think its  B C and D

Explanation:

Idk I think this will help :)

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A longitudinal wave is observed. Exactly 6 crests are observed
valentinak56 [21]
The speed of the wave is 1.58 meters per second (or 1.584 if you don’t round it).
You multiply wavelength by frequency to get the speed of a wave.
2.4 times 0.66 = 1.548 meters per second.

If you didn’t have the frequency before hand, you would just divide the 6 crests by the 9.1 seconds.
3 0
2 years ago
A body of volume 100cc immersed completely in water contained in a jar. The weight of water and jar before immersion of the body
BlackZzzverrR [31]
<h2>Answer:</h2>

800gm

<h2>Explanation:</h2>

Archimedes principle states that when an object is immersed in a liquid there is an apparent loss of weight of the object. This apparent loss of weight is also the upthrust experienced by the liquid. The upthrust is equal to the weight of the liquid displaced.

Following from the above statement, when the body of volume 100c.c is immersed in the water contained in the jar, the upthrust experienced is equal to the weight of the water displaced.

<em>Note: In the question, weight is measured just using the mass.</em>

Mass (m) is the product of density (ρ) of liquid (which is water in this case) and volume (v) of body immersed. i.e

m = ρ x v

Where;

ρ = 1 gm/cm³

v = 100c.c = 100cm³

=> m = 1 gm/cm³ x 100cm³

=> m = 100gm

Therefore the weight of water displaced is 100gm

Now, the weight of the water and jar after immersion is the sum of the weight of water and jar before immersion, and the weight of the water displaced. i.e

Weight of water and jar after immersion = 700gm + 100gm = 800gm

8 0
3 years ago
On a sunny day, a family decided to take sail on a nearby lake. During sailing the wind applies a force of 25N north on the sail
natka813 [3]

Answer:

its n

Explanation:

4 0
3 years ago
In which part of the scientific method do you tell why the research is being done?
wel
You tell it in pupouse
5 0
3 years ago
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While running around the track at school, Milt notices that he runs due East in the 100m homestretch and due West on the 100m ba
Sergeeva-Olga [200]

They have equal magnitudes and opposite directions.

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3 years ago
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