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Serjik [45]
3 years ago
10

Robert hook used an early microscope to observed a cork sample. How did this help contribute to cell theory?

Physics
1 answer:
Lady bird [3.3K]3 years ago
3 0

Answer:

Robert Hooke used an early microscope to observe a cork sample. How did this help contribute to cell theory? It helped to show that cells contain water. ... It helped to show that some cells are visible to the naked eye.

Explanation:

If your teacher checks if it was copied just put it in your on words

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Why does one side of the moon always face away from the earth?​
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Do you have to take physics to graduate high school?
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3 years ago
An object is dropped from 600 m. If it is initially at rest and achieves a top speed of 45 m/s just as it hits the ground, what
Brums [2.3K]

Answer:

1.68m/s^2

Explanation:

using V^2=U^2+2×a×s formula.

If,

(Final Velocity)V=45

(Initial Velocity)U=0 because it starts from rest

(Distance)S=600m

(acceleration)a= ?

now,

using formula,

45^2=0^2+2×a×600

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3 0
3 years ago
Read 2 more answers
A sound system is being set up in a gazebo in a park. It needs to produce music so that everyone can hear it. How much power wou
Agata [3.3K]

Answer:

Power of the speakers = 1.57 \times 10^{-6} W

Explanation:

There are speakers setup in a park and we have to find the power it would require to have intensity of sound to be 10^{-8} W/m^2 at a distance of 5 meter.

In one dimension the intensity is constant as the wave travels. In two or three dimensions, however, the intensity decreases as you get further from the source.

Intensity is inversely proportional to the square of the distance from the point of sound production.

Here area = 2\times \pi \times r^{2}

area = 157 m^{2}

Intensity = \frac{Power}{Area}

Power = intensity \times area

Power = 10^{-8} \times 157Power = 1.57 [tex]\times 10^{-6} W

7 0
3 years ago
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