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AleksAgata [21]
3 years ago
8

A direct result of the Newlands reclamation Act was the

Physics
2 answers:
siniylev [52]3 years ago
6 0

Answer:

building and managing of irrigation systems

Explanation:

John Wesley Powell observed that in the lands of the American west in the spring the land used to flood. However, this water could not sustain agriculture for the rest of the year.

The act was introduced by Francis G. Newlands so that building of irrigation systems could be done. This reclamation was the reason why human population grew in the west.

Lina20 [59]3 years ago
3 0
I think it is building and managing of irrigation systems 
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Calculate the energy in electron volts of X-rays that have a frequency of 3.00 x 100 Hz.
inn [45]

Answer:

E = 124 eV

Explanation:

Given,

The frequency of the X-rays, ν = 3.0 x 10¹⁰ Hz

The formula for calculating the energy of the electromagnetic waves of a single photon of having frequency 'ν' is given by the relation

                                    E = hν      joules

Where,

                       h - Planck's constant (6.626 x 10⁻³⁴  Js)

Substituting the values in the above equation

                                    E = 6.626 x 10⁻³⁴  Js   x  3.0 x 10¹⁰ Hz

                                       = 1.9878 x 10⁻²³  J

Converting it into eV

                                    E = 1.9878 x 10⁻²³  x 6.242 x 10¹⁸    eV

                                       = 124 eV

Therefore, the energy in electron volts of X-rays is, E = 124 eV

8 0
2 years ago
1. A 61-kg woman doing pull-ups lifts her body a distance of 0.32 meters in 1.8 seconds. What is the power provided by her bicep
Allushta [10]

Answer:

P = mgh/t = 61(9.8)(0.32)/1.8 = 106.275555... ≈ 110 W

Explanation:

Power is the rate of doing work.

The work changes her potential energy.

4 0
2 years ago
How are calculation for velocity and speed different
BARSIC [14]

Only velocity uses direction of travel in its calculations.

5 0
3 years ago
Will give brainliest
Ivan

Answer:

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Explanation:

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3 years ago
An atom contains 15 neutrons and has a mass number of 30. What is its atomic number? How did you determine the atomic number?
irinina [24]

Answer:

15

Explanation:

The mass number is defined as the total number of protons and neutrons. The atomic number is total number of protons. And since we have the mass number and number of neutrons, we can use simple subtraction (30 - 15) to find that the atomic number is 15.

8 0
3 years ago
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