Why check dams can increase the groundwaater level in a region

Answers

Answer 1

Answer:
Check dams shouldn't be more than 2-3 feet high. The center of it should be at least six inches lower than the edges. They might kill grass linings in channels if water stays high or sediment load is great. That criteria induces a weir effect, which makes water surface levels go upstream for some, if not all flow conditions.
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Related Questions

The atomic number of an atom is alwaysequal to the number of its. (1) protons, only. (2) neutrons, only. (3) protons plus neutrons. (4) protons plus electrons
Silicon dioxide, SiO2, is a(n) _____
Complete the first row in the table by filling in the missing information about a system at equilibrium.A:Q < KeqQ > KeqQ = Keq
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. 222/86 Rn decays by emission of an alpha particle. The product of this decay is A. 226/88 Ra B. 218/84 Po C. 218/88 Ra D. 220/86 Rn

Answers

The product of an alphadecay of 222/86 Rn is 218/84 Po (option B).

What is an alpha decay?

Alphadecay is a type of radioactive disintegration in which some unstable atomic nuclei dissipate excess energy by spontaneously ejecting an alpha particle.

An alphaparticle is a positively charged nucleus of a helium-4 atom emitted as a result of radioactivity. It has a formula of 4/2 He.

This suggests that when a 222/86 Rn undergoes alphadecay, the product will have mass and atomic number as follows:

Mass no.: 222 - 4 = 218
Atomic no.: 86 - 2 = 84

The element with atomic number 84 is Polonium (Po).

Therefore, option B is correct.

Learn more about alpha decay: brainly.com/question/35140893

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Which factor is MOST important in determining which minerals will form in a rock?A) The size of the rock.
B) The weight of the rock.
C) The hardness of the rock.
D) The composition of the rock.

Answers

The answer for this question is: The factor that is MOST important in determining which minerals will form in a rock D) The composition of the rock. This is because minerals actually exist as different chemical compounds. By knowing the chemical compounds present in a rock, you can find out what type of mineral is present as well.

Answer:

Its D.

Explanation:

I just took a usatestprep on it and it had the same question.

What is a system and how is it used

Answers

Simply put, a system is an organized collection of parts (or subsystems) that are highly integrated to accomplish an overall goal. The system has various inputs, which go through certain processes to produce certain outputs, which together, accomplish the overall desired goal for the system. A system is a collection of elements or components that are organized for a common purpose. The word sometimes describes the organization or plan itself (and is similar in meaning to method, as in "I have my own little system") and sometimes describes the parts in the system (as in "computer system"). A system is a group of interacting or interrelated entities that form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory. The term "system" comes from the Latin word systēma, in turn from Greek σύστημα systēma: "whole concept made of several parts or members, system", literary "composition".

Can you…Balance a chemical equation using the relationships identified?

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Answer:

A balanced chemical equation not only describes some of the chemical properties of substances—by showing us what substances react with what other substances to make what products—but also shows numerical relationships between the reactants and the products.

A balanced chemical equation not only describes some of the chemical properties of substance by showing us what substance react with what other substance

The smallest particle of an element that retains the chemical identity of that element is a/an A. atom.
B. compound.
C. molecule.
D. mixture.

Answers

The answer is A. atom. An atom has nucleus and electrons and its own characteristics. While compound and molecule are consists of different atoms. And mixture is consists of different compounds.

A. ATOM is the correc answer

A chemist measures 340 grams of sodium acetate. To convert this measurement to kilograms, the chemist should multiply 340 by _.a) 1 kg / 1 g
b) 1000 g / 1 kg
c) 1000 kg / 1000 g
d) 1 kg / 1000 g

Answers

Answer:

option d = 1 kg/ 1000 g

Explanation:

Given data:

Mass of sodium acetate = 340 g

Mass of sodium acetate in Kg = ?

Solution:

Gram and kilogram both are units of mass. Kilogram is larger unit while gram is smaller unit. The one kilogram equals to the 1000g. In order to convert the given value into kilogram the value must be multiply with 1 Kg/ 1000g.

340 g × 1 Kg/ 1000g

0.34 Kg

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Leutium-176 has a half-life of 3.85 mc012-1.jpg 1010 years. After 1.155 mc012-2.jpg 1011 years, how much leutium-176 will remain from an original 16.8-g sample?2.10 g 3.00 g 5.56 g 8.40 g