How did the scientists discover the common structure of cells

1 answer:

3 0

I did some research and i found that: through use of a microscope. The first scientists to look at human tissues through a microscope were surprised to see that all human tissues are made up of little compartments. They called these 'cells' after the bedrooms of monks in monasteries

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An electric bell is placed inside a transparent glass jar. The bell can be turned on and off using a switch on the outside of th

Art [367]

The answer is : We’ll see the bell move, but we won’t hear it ring. This is because light can travel through vacuum but sound cannot. Sound waves are vibrations of particles in any media, so sound requires a medium to travel, and it cannot travel in a vacuum as there is no particles to vibrate.

5 0

3 years ago

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A box of oranges which weighs 83 N is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0

otez555 [7]

The given question is incomplete. The complete question is as follows.

A box of oranges which weighs 83 N is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 m/s each second. The push force has a horizontal component of 20 N and a vertical component of 25 N downward. Calculate the coefficient of kinetic friction between the box and the floor.

Explanation:

The given data is as follows.

$F_{1}$ = 20 N, $F_{2}$ = 25 N, a = -0.9 $m/s^{2}$