Benjamin Franklin invented the lightning rod as a way to prevent lightning from causing damage to property or people. Use this same idea to construct a device that can protect a person from static charge buildup in their body as they run on a treadmill. Consider that the person wears rubber-soled shoes that rub on the treadmill's running surface, which generates static charges that build up in their body. When the person finishes her workout, she can receive an unpleasant shock when she steps off the treadmill and touches an object that suddenly discharges all of that charge. How can you apply Ben Franklin's idea of a lightning rod to solve this problem? Create a sketch showing how your shock protection system works. Your sketch should be labeled and clearly indicate how the excess static charge in a human body is discharged by the system you design. 12 f(x) (1000) 1 G​

Answer:

i think its speed

Explanation:

Answer:

Velocety and mass

Explanation:

Answer:

Liquids and solids have constant volumes

Explanation:

I believe this is the most correct statement

Answer:

Volume is a physical property of an object.

One unit of volume is the milliliter.

Liquids and solids have constant volumes.

Hope this helps <3

Explanation:

Answer:

2+2H2O.We already learn it

Answer:

0

Explanation:

Answer: friction between a car's windshield and the air as you drive into the wind.

Explanation: Hope this helps :)

Moles O2 required : 2.5

Given

Reaction

2H2+O2->2H2O

Required

Moles of O2

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants or products)

From the equation, mol ratio of H2O : O2 = 2 : 1, so moles O2 :

= 1/2 x mol H2O

= 1/2 x 5 moles

= 2.5 moles

Answer:

C

Explanation:

The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected.

The number of molecules= 3.55 x 10²⁴

Given

5.9 moles of NaCl

Required

The number of molecules

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

So for 5.9 moles :

= 5.9 x 6.02 x 10²³

= 3.55 x 10²⁴

They break down rotting materials and return nutrients to the soil.

( They don't do photosynthesis since they are much different from plants)

Answer:

B

Explanation:

the 3rd one is the answer

Answer: False

Explanation:

When a object is touching a surface, it mostly likely will change the temperature it's on, depending on how it is. Since they both have different temperatures and cooling down at the same particularity rates, it is highly false that this would happen. What WOULD would the bowl cool faster THAN the water, then the ice will transform into water.

Hope this helps and make sure to thank me!

Answer:

Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms

Explanation:

Answer:

Pollution

•The number of trips one takes in a car should be reduced.

•Reduce or eliminate fireplace and wood stove use.

•Burning leaves, trash, and other materials should be avoided.

•Using gas-powered lawn and garden equipment should also be avoided.

In an ecosystem, pollution is  a human activity that impacts the land negatively.Minimum use of vehicles and emission of smoke can help reduce the effects caused by the activity.

An ecosystem is defined as a system which comprises of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through  means of nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the ecosystem .Living organisms also influence the quantity of biomass which is  present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/13979184

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mol of Na2CO3 = 2.36 x 10⁻⁴

Given

Mass : 0.025 g of Na2CO3

Required

moles

Solution

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass  :

mol = mass : molar mass

mass = mol x molar mass

Input the value :

mol = mass : MW Na2CO3

mol = 0.025 g : 106 g/mol

mol = 2.36 x 10⁻⁴

Without a picture I can't answer

Answer:

D

Explanation:

Salinity is the saltiness or amount of salt dissolved in a body of water

Answer:

its b trust me i got it right

Explanation:

Moles of Fe2O3 used : 3.83

Given

11.5 moles of CO2

Required

moles of Fe2O3

Solution

Reaction

Fe2O3 + 3CO ⇒2Fe + 3CO2

The reaction coefficient shows the mole ratio of the reacting compound (reactants or products)

From the equation, mol ratio of Fe2O3 : CO2 = 1 : 3, so mol Fe2O3 :

= 1/3 x moles CO2

= 1/3 x 11.5

= 3.83 moles

Answer: 26kj

Explanation:

Just took the test and got it right :D

Answer:

When iron is heated in air it reacts with oxygen to form the compound iron oxide. Iron is a solid and oxygen is a gas. 5 Draw diagrams to show how the atoms are arranged in iron, oxygen and iron oxide in the circles below their names. Use different colours for the iron atoms and the oxygen atoms.

Explanation:

Explanation:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

There are 5.5 moles of Argon gas in tank

Given

122.6 liters of Argon gas

Required

The number of moles

Solution

Assume at STP

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

So for 122.6 L :

= 122.6 L : 22.4 L

= 5.47 moles ≈ 5.5 moles

Answer:

Percent yield = 85.23%

Explanation:

Given data:

Theoretical yield = 7.99 g

Actual yield = 6.81 g

Percent yield of CaO = ?

Solution:

Formula:

Percent yield = ( actual yield / theoretical yield ) × 100

by putting values,

Percent yield = (6.81 g/ 7.99 g) × 100

Percent yield = 0.8523× 100

Percent yield = 85.23%

Answer:

A. A new substance

Explanation:

sorry if its wrong if its right your welcome <3

Answer:

A i just did it. And yes i do go to k12

Explanation:

the answer would be iron. divide mass by volume to get density.

Answer:

B. Iron

Explanation:

Correct

Answer:

Heat change is involved in both process.

II. Both result in change of state of matter

Explanation:

Physical change substance involves the alteration of physical state of a substance. Chemical change substance involves the alteration of the chemical composition of the substance

Answer:

colder

Explanation: