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olga55 [171]
3 years ago
8

Chuck is doing renovations in the living room of his house. The length of the room is 24 feet and the width is 15 feet. A propor

tional scale drawing of the room was created that has a width of 45 inches. What is the length of the scale drawing?
Geography
1 answer:
Liula [17]3 years ago
8 0
The length of the drawing is 72 inches.
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1
astraxan [27]

Answer:

E

Explanation:

7 0
3 years ago
Read 2 more answers
Analysis of a rock sample that it contains 6.25% of its original uranium-235. How old is the rock? How do you know?
Andrews [41]

Answer:

The age of the rock = 2800.6 million years = 2.8 billion years.

A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.

Explanation:

Half life of Uranium-235 = 700 million years (from literature)

The decay of radioactive substances follow first order reaction kinetics.

The general equation is given as

A(t) = A₀ e⁻ᵏᵗ

A(t) = Amount of radioactive substance left after a particular time = 6.25%

A₀ = initial amount of radioactive substance = 100%

t = time that has passed since the beginning = age of the rock = ?

k = decay constant

The decay constant is related to the half life (T) through the relation,

k = (In 2)/T

k = (0.693/700) = 0.00099 /million years

A(t) = A₀ e⁻ᵏᵗ

6.25 = 100 e⁻ᵏᵗ

0.0625 = e⁻ᵏᵗ

In e⁻ᵏᵗ = In 0.0625 = -2.7726

-kt = - 2.7726

t = (2.7726/0.00099) = 2800.6 million years

t = 2.8 billion years.

Hope this Helps!!!

7 0
3 years ago
2.3. Why is it difficult to accomplish the goals of environmental justice? Discuss five reasons.
IrinaK [193]

Answer:

 Asi

Explanation:

es  la  vida :(

8 0
3 years ago
Which philosopher had the most profound influence on Thomas Jefferson's political thought?
timofeeve [1]

The correct answer  John Locke

8 0
3 years ago
landslides into bays and lakes can generate huge tsunami of local extent. what is it about bays and lakes that allows the tsunam
asambeis [7]

Landslides into bays and lakes can generate huge tsunami of local extent. The tsunamis associated with bays and lakes are so large because of their constricted topography.

Bay is a water body which is partially surrounded by land and is usually smaller and less enclosed than a gulf. However, the mouth of the bay is wider than gulf. The wave height increases as it comes near the shore, and it depends almost entirely upon the submarine topography offshore. Steeper shorelines tend to produce higher tsunami waves. Tsunamis can also occur in lacustrine environments. In lakes, the huge tsunamis are mainly generated because of the drastic mass-movement processes which displaces large volumes of water and triggered by seismic or aseismic phenomenon.

Learn more about Tsunamis at:

brainly.com/question/11687903

#SPJ4

8 0
1 year ago
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