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3 years ago

Which scientist contributed to disproving spontaneous generation?

Physics

1 answer:

kompoz [17]3 years ago

5 0

Answer:

A. John Tyndall

Explanation:

In 1887, John Tyndall confirmed the theory of biogenesis, formulated by Luis Pasteur in 1864, applying sterilization by discontinuous heating, a process that is currently known as tyndalization. Evidence of the existence of resting microbacterial forms, very resistant to heat.

Thanks to this demonstration he is recognized as the father of microbiology with Pasteur. The theory brought down the previous idea of the Spontaneous Generation, which remained in force since 1745.

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A large block attached to a spring is undergoing simple harmonic motion horizontally, with angular frequency ω and amplitude A.

Naily [24]

Answer:

Explanation:

It is a problem based on simple harmonic motion and friction . maximum friction possible between large block and mass m is µ mg . During SHM , maximum acceleration is ω² A and force is mω² A .

friction must exceed it so that mass m may not slip over it during motion . so

µ mg ≥ mω² A

µ ≥ mω² A / mg

smallest value of µ

= mω² A / mg

= ω² A /g

3 0

4 years ago

One particular confound for the use of an adoption study of heritability is the phenomenon of _____ placement, in which a child

Tresset [83]

Answer:

D) selective

Explanation:

The selective placement in the adoption studies refers to practice by which the adoption agencies tend to match some definite characteristics of the adopted child's adopted parents than that of child's biological parents.

It results in the correlation of the environments between the biological relatives raised in two different homes.

For example, when the child is placed in a home which is similar to the home of the biological parents.

3 0

4 years ago

A vessel containing 200 ml hydrogen gas at pressure 500torr at temperature 10 degree C.Find its volume when pressure increased t

Margaret [11]

Answer:

When the pressure and the temperature are increased the volume is 285.7 ml.

Explanation:

We can find the new volume by using the Ideal Gas Law:

$PV = nRT$

Where:

P: is the pressure

V: is the volume

n: is the number of moles

R: is the gas constant

T: is the temperature

Initially, when V₁ = 200 ml, P₁ = 500 torr and T₁ = 10 °C, we have:

$nR = \frac{P_{1}V_{1}}{T_{1}}$ (1)

And finally, when P₂ = 700 torr and T₂ = 20 °C, we have:

$nR = \frac{P_{2}V_{2}}{T_{2}}$ (2)

By equating (1) with (2):

$\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}$

$V_{2} = \frac{P_{1}V_{1}T_{2}}{T_{1}P_{2}} = \frac{500 torr*200 ml*20 ^{\circ} C}{10 ^{\circ} C*700 torr} = 285.7 ml$

Therefore, when the pressure and the temperature are increased the volume is 285.7 ml.

I hope it helps you!

3 0

3 years ago

What is the equivalent resistance of a 7ohm resistor and a 93 ohm resistor connected in parallel? PLEASE HELP ASAP

lukranit [14]

When you have several resistors in parallel, their equivalent resistance is the reciprocal of the sum of their individual reciprocals.

When there are only two of them, it gets a lot easier. In that case, their equivalent resistance is equal to

(their product) divided by (their sum).

Equivalent = (7 x 93) / (7 + 93)

Equivalent = (651) / (100)

Equivalent = 6.51 ohms .

7 0

4 years ago

Through what process is carbon pulled from the atmosphere in the carbon cycle

Andrei [34K]

Carbon is pulled from the atmosphere in the carbon cycle through the process of photosynthesis. Details about photosynthesis can be found below.

<h3>What is photosynthesis?</h3>

Photosynthesis is the process whereby green plants obtain their nutrition by utilizing energy from sunlight.

Green plants absorb carbon in the form of carbon dioxide from the atmosphere and use it in the photosynthetic process.

This means that one way that carbon is removed from the atmosphere during the carbon cycle is through photosynthesis.

Learn more about photosynthesis at: brainly.com/question/1388366

#SPJ1

7 0

3 years ago