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ladessa [460]
3 years ago
5

The invention and use of the microscope showed scientists that germs could cause illness. Although there had been various unders

tandings before for why people become ill, the discovery that microscopic germs can make people sick completely changed scientific understanding of why diseases exist and spread. This change is an example of what?
Physics
1 answer:
Nastasia [14]3 years ago
5 0

Answer:

Explanation:

The invention of microscope is a huge step towards the scientific research at that time.

It tries to explain the characteristic and nature of the microscopic bodies and even help to understand its cycle.

It even explains why germs causes us to sick and the small details present in any of the substance around. It helps to identified the microscopic structure of the substance and is a very important research in field of science and technology.

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Answer:

252 years

Explanation:

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If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?
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A projectile is fired horizontally from a height of 78.4 m at a speed of 300 m/sec. How far did it travel horizontally before hi
Mice21 [21]

Answer:

Explanation:

Using the formula for calculating range expressed as;

R = U√2H/g

U is the speed = 300m/s

H is the maximum height = 78.4m

g is the acceleration due to gravity = 9.8m/s²

Substitute into the fromula;

R = 300√2(78.4)/9.8

R = 300 √(16)

R = 300*4

R = 1200m

Hence the projectile travelled 1200m before hitting the ground

3 0
3 years ago
Problem #2: An apple is thrown upward with an initial velocity of +24.0 m/s. a. Sketch the apple's trip and label what you know.
bogdanovich [222]

Answer:

The answer is below

Explanation:

a) The initial velocity (u) = 24 m/s

We can solve this problem using the formula:

v² = u² - 2gh

where v = final velocity, g= acceleration due to gravity = 9.8 m/s², h = height.

At maximum height, the final velocity = 0 m/s

v² = u² - 2gh

0² = 24² - 2(9.8)h

2(9.8)h = 24²

2(9.8)h = 576

19.6h = 576

h = 29.4 m

b) The time taken to reach the maximum height is given as:

v = u - gt

0 = 24 - 9.8t

9.8t = 24

t = 2.45 s

The total time needed for the apple to return to its original position = 2t = 2 * 2.45 = 4.9 s

4 0
3 years ago
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