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3 years ago

A. Describe the mass, charge, and location of protons, neutrons, and electrons in an atom.

2 answers:

3 0

A.) i.) Mass of Proton is slightly lower than the neutron and electrons are too lighter as compared to them.

ii.) Proton has positive charge, Electron with negative, and neutrons does not have any charge.

iii.) Proton and Neutron resides under the nucleus so known as "Nucleons" whereas electrons revolve around the nucleus.

B.) Protons and Neutrons determine the atomic mass of an atom, and protons and electrons determine the charge upon it. They are the basic properties and many chemical predictions could be made by this information.

Hope this helps!

serg [7]3 years ago

3 0

A. mass of proton is slightly lower than the neutron and electrons are too lighter as compared to them.

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Bearing in mind that a sound reflects off an object if the object is larger than the wavelength of the sound, calculate the wave

grandymaker [24]

Answer:

mucilage can detect objects the size of millimeters, whereas humans can only detect objects larger than centimeters

Explanation:

The human ear can detect sound in the range of 20 to 20000hz, we are asked to find the mid-range wavelength of the ear at f = 10000 Hz

let's use the relationship between wave speed, wavelength and frequency

v = λ f

λ= v / f

λ = 343/10000

λ = 3.43 10⁻² m

the sound range of a bat is between 25 10³ Hz and 100 10³ Hz, they also ask for the wavelength in the middle range

f = (100 10³ + 25 10³) / 2

f = 62.5 10³ Hz

λ = 343 / 62.5 10³

λ = 5.5 10⁻³ m

Therefore the size of the object that a bat can detect is much smaller than the size that a human can detect, therefore the bat is capable of detecting insects, but humans.

The mucilage can detect objects the size of millimeters, whereas humans can only detect objects larger than centimeters

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3 years ago

How does the air in a bicycle tyre cause pressure?

FromTheMoon [43]

The air inside the Tyre causes pressure because the particles bump into each other and cause pressure the more they bump into each other or their container the higher the pressure is.<span />

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4 years ago

A nail is inserted in the trunk of a tree at a height of 1 meter from the ground

worty [1.4K]

Answer:

15m

Explanation:

Hello! first to solve this problem we must find that so much that the tree grew in the 15 years this is achieved by dividing the height of the tree before and after

the tree grew 10 times its initial length in 15 years, so to find how tall the nail is, we multiply this factor by 1.5m

X=(1.5m)(10)=15m

the nail is 15 meters above ground level

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3 years ago

What makes us human?

Readme [11.4K]

Our Feelings, Mistakes, The Nerves in our body and the Intelligence our brains hold.

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3 years ago

Using local acceleration of gravity data from the Internet, de- termine the weight, in N, of a person whose mass is 80 kg living

Anna007 [38]

Answer

mass of a person is 80 kg

a) Mexico City, Mexico

acceleration due to gravity in mexico = 9.776 m/s²

weight = 80 × 9.776 = 782.08 N

b) Cape Town, South Africa

acceleration due to gravity in cape town = 9.796 m/s²

weight = 80 × 9.796 = 783.68 N

c) Tokyo, Japan

acceleration due to gravity in cape town = 9.798 m/s²

weight = 80 × 9.798 = 783.84 N

d) Chicago, IL

acceleration due to gravity in cape town = 9.803 m/s²

weight = 80 × 9.803 = 784.24 N

e) Copenhagen, Denmark

acceleration due to gravity in cape town = 9.815 m/s²

weight = 80 × 9.815 = 785.2 N

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4 years ago