What is the value of j?​
what is the value of j?​ - 1

Answers

Answer 1
Answer:

Answer:

35°

Explanation:

j and 35° are vertically opposite angles so their measures are equal and 35° each.


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On the northern hemisphere's summer solstice, areas above arctic circle are completely within the circle of illumination. question 8 options: a. True
b. False

Answers

the correct answer to the question is true

Which of the air pollutants has been the most difficult to reduce?

Answers

Answer:

Ozone

Explanation:

Ozone is a secondary photochemical contaminant, that is, it is formed from primary pollutants emitted into the atmosphere (mainly nitrogen oxides and volatile organic compounds) in the presence of solar radiation.

The photochemical formation of ozone in a given region is the result of a complex chemical process in which, from its precursors (nitrogen oxides and volatile organic compounds), a multiplicity of different species intervene, interacting with each other according to different reactions, resulting in a highly nonlinear final balance. A transcendental consequence of this nonlinear chemistry is that in a given region, and depending on the initial conditions of departure, the action on the different precursors can have very variable consequences, it being possible that it leads both to an increase and a decrease of ozone concentrations.

This makes short-term measures to reduce air pollution in a certain area, of a restrictive type (such as limiting the operation of heat generators, restricting the circulation of vehicles, regulating traffic to make it more fluid, restricting certain industries and activities) they are not as effective with ozone as with other types of pollutants, as they are a secondary type pollutant and may even in some cases produce a counterproductive effect: for example a drastic reduction in traffic, causing a decrease in NOx levels in the atmosphere, can prevent the decrease of ozone levels that had previously formed.

In the fight against ozone it is necessary to apply medium and long-term measures aimed at limiting emissions of ozone precursor pollutants into the atmosphere.

They do not serve short term strategies. Medium-long term strategies for the reduction of ozone precursors must be devised:

- Less polluting vehicles (NOx, VOCs)

- Use of public transport (NOx, VOCs)

- Energy saving (NOx)

- Use of non-polluting energies (NOx)

- Reduction of solvent use (VOCs).

4. Atmospheric Loss ProcessesThe Earth and Venus enjoy thick atmospheres, while the Moon and Mercury are airless. Mars presents an intermediary case.

(a) Describe the three primary mechanisms for atmospheric loss.

(b) In the distant past, Mars had a thicker atmosphere, surface liquid water, and was likely habitable. Why do we think Mars lost most of its atmosphere?

Answers

Answer:

As explained below.

Explanation:

  • The earth and venus are two planes both of them share the same geologic history but the environment on venus is district as the rotation of the planet is fast as compared to earth and has a very rugged and dry landscape now.  
  • The picture of mars and moon and repeaters and intermediate cases, of dryness and loss of original atmosphere by solar winds. Primary is solar winds and degassing of the crust of rocks  
  • Mars too had a thick atmosphere filled with water vapor and oceans and was a habitable planet like earth but after some point of time mars chemical and physical properties changes to a certain extent that now most of 95% of the atmosphere was filled with carbon dioxide and 2.6% of nitrogen, presence of dust methane and other harmful greenhouse gases are in abundance
  • Due to heavy bombardment period and erosion of rocky mass by sun and celestial bodies.

Explain all the types of erosion caused by water

Answers

Answer:

There are three types of soil erosion caused by water. They are: Sheet, Rill and Gully.

Sheet Erosion

This type of erosion takes away the top soil over a wide area thereby making it look as though it took a sheet of the top soil. As a result, this is not easy to notice at first glance because the soil from the whole area is gone so there is nothing to compare it to.

Rill Erosion

When water goes in channels and makes lines in the soil a by carrying off the soil that was previously on those lines, that is rill erosion. These channels must be shallow to be considered Rill erosion however because if they are too big, it would become gully erosion.

Gully Erosion

Gully erosion is much like Rill erosion but on a much larger scale. With gully erosion, the channels are much bigger and allow for more soil to be taken. Gully erosion can remove a lot of soil from an area. The Grand Canyon for instance was formed by Gully erosion.

The United States and Canada share which system of government?bicameral legislature
unicameral legislature
constitutional monarchy
constitutional democracy

Answers

Answer:

bicameral legislature

Explanation:

1) The Sun has an average surface temperature of approximately 6000 K. Calculate the power per unit area released by the surface of the Sun using Stefan-Boltzmann Law and report the value below. Units are a must. (2 points)Power per unit area released by the Sun=

Answers

Answer:

Power per unit area released by the Sun is 73,488,384 Watt per meter square.

Explanation:

The Sun has an average surface temperature of approximately,T= 6000 K

The power per unit area released by the surface of the Sun be P'

Stefan-Boltzmann Law  is given as:

P'=(Power)/(Area)=\sigma T^4

where

\sigma =5.6704* 10^(-8) Watt/m^2K^4 Stefan-Boltzmann constant

T = Absolute temperature of the body

Power per unit area released by the Sun:

=5.6704* 10^(-8) Watt/m^2K^4* (6000 K)^4=73,488,384 Watt/m^2