What is the size of cough and sneezing droplets and how far they can travel? (try to calculate the distance and give reference of scientific studies only. You can use video or images to explain your answer wherever needed)

find solution of the following question:

a) propose a strategy to form the strongest Al 2024, and List two main drawbacks of such a material.

b) Precipitation hardening ( increases/decreases ) the yield strength of materials

In a static bed, how can we describe the forces responsible for the initiation or non-initiation of grain or sediment movement from a static bed.

One way to makebromine is to react HBr and O2to form Br2and H2O. Air (21 mole% O2, 79 mole% N2)is fed to provide 35% excess oxygen, and the fractional conversion to HBr is 85%. (a)Calculate the mole fractions of the product stream components, using atomic species balances in your calculation.(b)Repeat (a) but use the extent of reaction equations instead.

1.In an experimental cracking of octane (C8H18), the product has the following composition: 19.5% C3H8, 59.4% C4H10, and 21.1% C5H12. Cracking is the process of reacting long hydrocarbon chains with hydrogen gas to produce hydrocarbons of shorter lengths. Determine the molar ratio of hydrogen gas consumed to octane reacted.

An equipment costs Rs. 1,70,000 and will have a scrap value of Rs. 25,000 at the end of
its useful life of 10 years. If the interest is compounded at 10% per year, what are the cost
of replacement, the present worth and the capitalized cost?

1. Total fertility rates are typically _______ in developing countries than in developed countries, and life expectancy is on average ______ in developing countries than in developed countries. Group of answer choices

a. lower, lower

b. higher, higher

c. higher, lower

d. lower, higher

2. The total human population has grown _______ the last 100 years

Group of answer choices

a. at a steady rate

b. above earth’s carrying capacity

c. exponentially

d. logistically

e. slowly

3. Intact freshwater wetlands are ecologically beneficial because they

Group of answer choices

a. provide habitat for many marine (ocean) organisms

b. provide hydroelectric energy

c. retain storm water

d. emit methane, an important greenhouse gas

e. promote flooding in ecosystems with low annual precipitation

4. During stage 2 of the demographic transition model

Group of answer choices

a. death and birth rates are increasing

b. death rates and birth rates remain high

c. birth rates decline rapidly

d. death rates decline, while birth rates remain high

e. the population is typically decreasing in size

5. The population in a country with a total fertility rate of 4, a low death rate and a immigration rate that equals the emigration rate is

Group of answer choices

a. unpredictable

b. stable

c. decreasing

d. increasing

6. Many plants in the __________ biome have thick epidermal layers on their leaves to prevent water loss

Group of answer choices

a. tropical rain forest

b. grassland

c. deciduous forest

d. desert

e. wetland

Please, I want a paragraph about PVC materiel, with a table of properties of PVC.

I need it in an experimental measurement and techniques project. NO PLAGIARISM PLEASE

What are the differences between Lagrangian and Eulerian approach . (At least 5 differences)

Convincing Others that Climate Change is Real

Climate change remains a somewhat controversial topic in the media and in politics, while nearly every climate scientist is in agreement about what is happening right now. If there is so much data, why are there still so many critics of climate change? Search the internet for one argument that either climate change is not happening at all, or that humans are not largely responsible for what is happening. Choose an argument that has not been posted by your classmates in the discussion. Clearly state the argument in one sentence at the top of your post and make it bold so your classmates can find it easily. Below that, describe the reasons for the argument against climate change, using credible sources (and, better yet, scholarly ones). Below that, make an argument to the contrary, i.e., that climate change is real and that humans are responsible for it. Write this as if you were writing to the critic of climate change trying to change his or her their mind. What approach would you take?

The Diels-Alder reaction is one of the most useful in organic chemistry because it allows for the formation of rings: The reactor initially has only the diene and the dienophile. The product stream has 55 mole% of the ring and 17 mole% of diene. Calculate the fractional conversion of the limiting reactant and the percentage by which the other reactant is in excess. If we assume that we can do this reaction continuously, pick a basis for the feed and determine theextent of reaction.R = CH3.

Explain why global warming is problematic for modern day animals. Be specific and include examples of why Earth history reveals this to us. Please answer in few sentences.

1. Using pictures and/or diagrams, describe and explain three (3) methods used to monitor pit slope stability. (20 points)

question contains 20 marks, so answer should be accurate and explained clearly(2pages without diagrams)

please type your answer, please do not write on the paper and post it

Energy Matrix

Use your textbook to research each energy source in the matrix below.

Complete the matrix with 1- to 2-sentence responses for each prompt.