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2 years ago

Explain what was ultimately responsible for London’s “killer fog” in 1952.

Physics

2 answers:

stellarik [79]2 years ago

6 0

Answer:

possible answer from edge

Explanation:

After World War II the only coal available to burn residentially, either for cooking or warmth, was of poor quality and contained large amounts of contaminants that made its fumes toxic. So when millions of homes in London burned this low quality coal and the local atmosphere over and around London stagnated, there was nowhere for the fumes to go. This stagnation allowed the toxic coal fumes to build up until they became physically harmful to humans and animals.

Fed [463]2 years ago

5 0

Answer:

Edge 2021 Practice

Explanation:

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Why do we need to separate out certain things from a mixture

Nadusha1986 [10]

To get the right solution of what we want

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2 years ago

An LP turntable must spin at 3.500 rad/s to play a record. How much torque must the motor deliver if the turntable is to reach i

zmey [24]

Answer:

0.00321 Nm

Explanation:

$\omega_f$ = Final angular velocity = 3.5 rad/s

$\omega_i$ = Initial angular velocity = 0

$\alpha$ = Angular acceleration

$\theta$ = Angle of rotation = 2 rev

Equation of rotational motion

$\omega_f^2-\omega_i^2=2\alpha \theta\\\Rightarrow \alpha=\frac{\omega_f^2-\omega_i^2}{2\theta}\\\Rightarrow \alpha=\frac{3.5^2-0^2}{2\times 2\pi \times 1.8}\\\Rightarrow \alpha=0.54156\ rad/s^2$

Moment of inertia is given by

$I=mr^2\\\Rightarrow I=0.25\times 0.154^2\\\Rightarrow I=0.005929\ kgm^2$

Torque is given by

$\tau=I\alpha\\\Rightarrow \tau=0.005929\times 0.54156\\\Rightarrow \tau=0.00321\ Nm$

The torque required is 0.00321 Nm

8 0

2 years ago

Microorganisms characterized by the absence of a nucleus are called

Sidana [21]

<h2>Answer: Prokaryotes </h2>

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Now, in the case of prokaryotic cells there is no defined nucleus, therefore it is said that it has no nucleus. This means that the cell's genetic material is simpler than the others and is dispersed in the cytoplasm (in the nucleoid).

Due to having a less complex genetic information, prokaryotes are considered the first living organisms that existed on the planet and are mostly bacteria.

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Softa [21]

Answer:

hopefully that helps

Explanation:

B. Communication in the endocrine system is slower than communication in the nervous system.

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1 year ago

When you rub neutral objects

FrozenT [24]

electrons can be knocked loose from one object and picked up by the other. The object that gains electrons becomes negatively charged, while the object that loses electrons becomes positively charged.

b gained electrons

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1 year ago