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viva [34]
3 years ago
7

In 1815 William Smith correlated strata from many locations and plotted it on paper to show the spatial distribution of rock uni

ts on Earth's surface. This document was the first modern:
A. geologic column
B. geologic map
C. stratigraphic column
D. geologic time scale
E. range
Physics
1 answer:
zimovet [89]3 years ago
6 0

Answer:

B. geologic map

Explanation:

At the beginning of the nineteenth century, the works of William Smith (1769-1839) in the secondary lands of England and of Georges Cuvier (1769-1832) and Alexandre Brongniart (1770-1847) in the tertiary of the Paris basin. These authors realize that the different and successive formations (groups of strata) were characterized by different fossils and that they were so different from the current ones the older the formation was. On this observation another of the fundamental principles of Geology is based, which is the Principle of faunal succession, which establishes that organisms appear and disappear in the fossil record following a specific and non-repetitive order. This principle allows correlations (comparisons over time) to be established between materials of the same age in very different geographical areas. Also, these observations carried evidence of species extinction and, finally, of evolution.

On August 28, 1839, the British geologist William Smith died (March 23, 1769 - August 28, 1839).

In addition to being the creator of the first geological map of history, he considers the "father" of modern stratigraphy.

In 1815 he published the first geological map of the world. It covered the whole of England and Wales. Conventional symbols were used to mark mines of canals, tunnels, trams and roads, coal mines, lead, copper and tin, along with salt and alum works.

Various geological types were indicated by different colors; The maps were colored by hand. However, the map is remarkably similar to the modern geological maps of England.

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Momentum is a measure of the<br> of an object.<br> Which term accurately completes the sentence?
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Answer:

Momentum is define as the product of the mass and velocity of a body. It is measured in Kgm/s.

Explanation:

Momentum is the product of mass and velocity of an object. When an object or a body of mass 'm' is moving with velocity 'v', then its momentum can be determined as;

momentum (P) = mass × velocity

i.e            P = m × v

                  = mv

It is measured in Kgm/s.

The change in momentum of a body is referred to as its impulse (Ft).

ΔP = m(v - u) = Ft

Where: P is the momentum of the object, m is its mass, v is its final velocity, u is the initial velocity, F is the force and t is the time in which the force acts.

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Answer:

Explanation:

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5. The boiling point of mercury is lower than<br> that of alcohol.
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An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process,
Sedbober [7]

Answer:

a.T_3=1723.8kPa\\b.n=0.563\\c.MEP=674.95kPa

Explanation:

a. Internal energy and the relative specific volume at s_1 are determined  from A-17:u_1=214.07kJ/kg, \ \alpha_r_1=621.2.

The relative specific volume at s_2 is calculated from the compression ratio:

\alpha_r_2=\frac{\alpha_r_1}{r}\\=\frac{621.2}{16}\\=38.825

#from this, the temperature and enthalpy at state 2,s_2 can be determined using interpolations T_2=862K and h_2=890.9kJ/kg. The specific volume at s_1 can then be determined as:

\alpha_1=\frac{RT_1}{P_1}\\\\=\frac{0.287\times 300}{95} m^3/kg\\0.906316m^3/kg

Specific volume,s_2:

\alpha_2=\frac{\alpha_1}{r}\\=\frac{0.906316}{16}m^3/kg\\=0.05664m^3/kg

The pressures at s_2 \ and\  s_3 is:

P_2=P_3=\frac{RT_2}{\alpha_2}\\\\=\frac{0.287\times862}{0.05664}\\=4367.06kPa

.The thermal efficiency=> maximum temperature at s_3 can be obtained from the expansion work at constant pressure during s_2-s_3

\bigtriangleup \omega_2_-_3=P(\alpha_3-\alpha_2)\\R(T_3-T_2)=P\alpha(r_c-1)\\T_3=T_2+\frac{P\alpha_2}{R}(r_c-1)\\\\=(862+\frac{4367\times 0.05664}{0.287}(2-1))K\\=1723.84K

b.Relative SV and enthalpy  at s_3 are obtained for the given temperature with interpolation with data from A-17 :a_r_3=4.553 \ and\  h_3=1909.62kJ/kg

Relative SV at s_4 is

a_r_4=\frac{r}{r_c}\alpha _r_3

==\frac{16}{2}\times4.533\\=36.424

Thermal efficiency occurs when the heat loss is equal to the internal energy decrease and heat gain equal to enthalpy increase;

n=1-\frac{q_o}{q_i}\\=1-\frac{u_4-u_1}{h_3-h_2}\\=1-\frac{65903-214.07}{1909.62-890.9}\\=0.563

Hence, the thermal efficiency is 0.563

c. The mean relative pressure is calculated from its standard definition:

MEP=\frac{\omega}{\alpa_1-\alpa_2}\\=\frac{q_i-q_o}{\alpha_1(1-1/r)}\\=\frac{1909.62-890.9-(65903-214.7)}{0.90632(1-1/16)}\\=674.95kPa

Hence, the mean effective relative pressure is 674.95kPa

3 0
4 years ago
the imagine above shows to opposite forces acting on a rolling cart, what can we say is true about affect of the forces on the c
cluponka [151]

Answer:

Here is my answer...

Explanation:

The cart will connect with the opposite force, and then the cart will come to a shuddering stop before moving in the direction of the oposite force.

Hope I helped! :)

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