# How many grains of sand are there in the world

Posted By Admin @ September 03, 2022

#### Question:

A grain of sand weighs approximately 0.011 grams. There are approximately 7.5 x 10^18 grains of sand in the world. Using scientific notation, calculate approximately how much all the grains of sand in the world weigh (in grams). Show and explain your work, rounding to the nearest hundredth; answer in a complete sentence.

.011 = 1.1* 10^-2 in scientific notation

1.1*10^-2 * 7.5 * 10^18 = (1.1*7.5) * 10 ^ (-2+18)

8.25*10^16

The sand weighs 8.25 * 16^16 grams.

## Find the direction angle of v for the following vector.

The direction of the path of the vector is measured relative to the horizontal line or axis.The direction angle for, v is approximately 31°.Reasons:The given …

## A liquid cooled down below a certain temperature becomes a

Explanation:In a liquid, atoms are less strongly held together as compared to solids. Due to this the atoms are able to slide past each other. …

## Why did the united states ban the use of ddt

DDT was used during second world war to control malaria among the troops and the civilians. Later, it was used as pesticide in agricultural and …

## Water waves in a small tank are .06 m long

The speed of the wave is 0.2958 m/s and its period is 0.203 secondThe speed of a wave is the product of its frequency and …

## Which of these best describes the primary goal of meiosis

The right answer is D. Meiosis consists of two successive cell divisions that will give birth to gametes. After the meiosis, the original cell gave …

## How was the three fifths compromise like the great compromise

AnswerIt determined how states would be represented in CongressExplanationThree-Fifths Compromise was a process which was used by the states to count slaves as part of …

## All of the following are effective countermeasures of fatigue except:

All of the following are effective countermeasures of fatigue except: D. Allowing your eyes to lose focus.What is a countermeasure?This is the term that helps …

## Which two parts of the earth make up the lithosphere

The correct answer is - (a) crust and outer part of mantle.The lithosphere is represented by the outermost part of the Earth. It is consisted …

## The right to due process means that the government apex

Answering the question, the right to due process means that the government has to follow the law in its treatment of citizens.The amendment to the …

## A mnemonic device is a strategy used to improve memory

Answer:TrueExplanation:A mnemonic device is a method employed to make the memory have the ability to remember things, improve the memory, and generally improve the long …

## Most minerals on earth's surface contain which of the following

Correct answer choice is :B) Oxygen and silicon Explanation:Silicates comprise silicon molecules and oxygen atoms. One silicon atom is bonded to four oxygen atoms. These …

## Identify the challenges to development in contemporary sub saharan africa

The challenges to development in contemporary sub-Saharan Africa include:• Debt and economic dependence on foreign nations.• Public health concerns including HIV/AIDS• Education gap due to …

## Write a ratio and a percent for the shaded area

Here are the answers to the following questions:1. Write a ratio and a percent for the shaded area.a 4x4 grid with 5 blocks shaded (1 …

## Discuss how personal choice can enhance your safety when exercising.

In general, you can choose when, where, and how to exercise. Each of these choices can either positively or negatively affect your safety during physical …

## Which product is the result of light reactions in photosynthesis

Answer:D. OxygenExplanation:Plants absorb carbon dioxide (CO2) and release oxygen for humans and animals to breathe in. Afterward, they'll release CO2 for plants to absorb, which …