Can someone plz tell me how to solve this step by step

Answers

Answer 1

Answer:

Answer:

Explanation:

T=2π√l/g

to solve this for l we have to remove the square root in order to finish square root we have to take square on both side so the equation become

T²=4π²l/g

multiplying g on both side

T²g=4π²l

now dividing 4π² on both side

T²g/4π²=l

so l=T²g/4π²

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A lithium oxide compound is represented by which formula?

Answers

Li2O is the molecular formula for lithium oxide.

the answer is Li2O

good luck

_______ are an especially good indicator of climate change because scientists can find clues about ancient organisms and their environments.

Answers

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A sample of gold has a mass of 38.6 grams and a volume of 2 cm3. What is the density of gold

Answers

The density of the sample of gold whose mass is 38.6 grams and with a volume of 2 cm³ is 19300 kg/m

Density: This can be defined as the ratio of mass and velocity. The S.I unit of density is kg/m³.

The question above can be solved using the formula below

D = m/V.................... Equation 1

Where D = density of the sample of gold, m = mass of gold, V = volume of gold.

From the question,

Given: m = 38.6 g, = 0.0386 kg, V = 2 cm³ = 0.000002 m³

Substitute these values into equation 1

D = 0.0386/0.000002

D = 19300 kg/m³

Hence the density of the sample of gold is 19300 kg/m³

Learn more about density here: brainly.com/question/23562510

Answer:

$19.3 g/cm^3$

Explanation:

The density of a material is given by

$\rho = (m)/(V)$

where

m is the mass of the sample

V is its volume

for the sample of gold in this problem,

m = 38.6 g

$V=2 cm^3$

Substituting into the formula, we find the density of gold:

$\rho = (38.6)/(2)=19.3 g/cm^3$

scientists hypothesize that oxygen began to accumulate in earth's atmosphere of living things with the ability to?

Answers

According to geological data, oxygen production by photosynthetic microbes began about 2 billion years ago. This made it possible for oxygen to build up in the atmosphere, which eventually led to a switch from reducing to oxidizing circumstances.

What accumulates in earth's atmosphere of living things?

A basic type of bacteria eventually evolved that could survive by using the energy from the Sun and the carbon dioxide in the water to produce oxygen as a byproduct. As a result, the atmosphere started to fill up with oxygen as carbon dioxide levels were falling.

Cyanobacteria underwent a stunning transformation at least 2.4 billion years ago, which was made possible by their evolution.

They evolved into the earliest photo-synthesizers on Earth, producing food out of water and solar energy, while also releasing oxygen in the process.

Therefore, living beings were able to breathe because of the oxygen in the early atmosphere.

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The oxygen in the early atmosphere enabled living things to breathe.

Up to 80% of doctors endorse this project "uses which rhetorical device"

Answers

the correct answer is this one: "A. Euphemism." Up to 80% of doctors endorse this project" uses Euphemism as a rhetorical device.
Here are the choices.
A. Euphemism
B. Weasel Words
C. Proof Surrogate
D. Innuendo
E. Hyperbole

Answer;

Proof Surrogate.

Explanation;

A claim masquerading as proof or evidence, when no such proof or evidence is actually being offered.

Proof Surrogate is an expression used to suggest that there is evidence for a claim without actually citing any evidence. For example;

-“Scientists have known that aliens exist for years now.”

-“Everyone knows that bottled water is better for you than tap water.”

What does viscosity describe? Question 4 options: A. a fluid's resistance to being heated
B. the rate of evaporation of a fluid
C. how much energy it takes to warm a fluid
D. the density of a fluid
E. a fluid's resistance to flowing

Answers

Answer:

E. a fluid's resistance to flowing

Explanation:

Viscosity, also known as "thickness" is a rheological property that describes a fluid's resistance to flowing, fluids of low viscosity, like water, flow more easily while high viscosity fluids, like mud, are harder to move through. It is an important property because it determines the energy required to make a certain fluid flow.

D. the density of a fluid