1
Verify the identity. Show your work.

cot θ ∙ sec θ = csc θ

Answers

Answer 1

Answer: To verify the identity, we can make use of the basic trigonometric identities:
cot θ = cos θ / sin θ
sec θ = 1 / cos θ
csc θ = 1 / sin θ

Using these identities:
cot θ ∙ sec θ = (cos θ / sin θ ) ( 1 / cos θ)

We can cancel out cos θ, leaving us with
cot θ ∙ sec θ = 1 / sin θ
cot θ ∙ sec θ = = csc θ

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Why do different elements emit different colors of light

Answers

Answer:

different photonic energies

Final answer:

Elements emit different colors of light based on their electron configurations and the amount of energy released.

Explanation:

Each element has a unique arrangement of electrons in its atoms. When these electrons transition from higher energy levels to lower energy levels, they release energy in the form of light. The color of light emitted depends on the amount of energy released.

For example, sodium emits yellow light because its electrons transition from a higher energy level to a lower energy level, releasing a specific amount of energy corresponding to the yellow part of the visible spectrum.

Other elements, like copper or lithium, emit different colors of light because they have different electron configurations and release energy at different wavelengths.

Learn more about Emission of light here:

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The Milky Way is a _____ galaxy. cluster barred spiral irregular elliptical group

Answers

The least common shape for a galaxy iscluster. Galaxy, by definition, is an arrangement composing of stars, planets,gasses and everything more that can be seen in the space. There are three typesof galaxies and they are elliptical, spiral and irregular. Spherical could beapplicable as elliptical if you got to choose only one on the choices above.Example of spiral galaxy is the Milky Way galaxy where our Solar system iscurrently located according to the scientists. The considered satellite forMilky Way is letter D: Copernican Dwarf Elliptical or Sagittarius CopernicanDwarf Elliptical.

The Milky Way is a _____ galaxy.

cluster
barred spiral
irregular
elliptical
a group

Answer: The Milky Way is a BARRED SPIRAL galaxy.

Projectile motion is a combination of which two types of motion?

Answers

The correct answer is:

Vertical Free Fall and Constant Horizontal Motion

Explanation:

A projectile proposal is a form of motion confronted by an object or particle that is started near the Earth's surface and transfers along a rounded path under the action of gravity only. The vertical force acts perpendicular to the parallel motion and will not affect it since perpendicular segments of motion are confident of each other. Thus, the projectile travels with a constant horizontal velocity and a descending vertical acceleration.

Vertical Free Fall and Constant Horizontal Motion

The intense heat from Earth's interior that warms the magma beneath Earth's surface is called?

Answers

Answer:

Geothermal energy

Explanation:

The geothermal energy causes the interior of the Earth to warm up. It warms the magma beneath the surface of the Earth. It is derived within the subsurface by water or wind. It is also used to generate electricity in geothermal power plants. Hot water reservoirs can be found deep in earth's surface. Its steam is used to rotate the turbines and electricity can be generated.

Its called Geothermal Energy that is the source of the heat inside the earth from its mantle to its core. It can be use electrical energy but only when it will be converted. This energy allows the earth to maintain its temperature.

A scientist noticed that a dark-colored peppered moth is more visible on a light-colored background than a light-colored peppered moth. He wonders, “Does this difference in visibility affect the survival rate of dark moths?” Which part of the scientific method does he need to carry out next?

Answers

Answer: Form a hypothesis

A scientific way to investigate a problem involves mainly five steps.

→A question or problem must be formulated in the first step.

→After gathering the background information, A hypothesis must be made.

→Third step would be to design an experiment.

→Fourth step would include collection and recording of data.

→Fifth step would include the conclusions drawn from the experiment and communication of hypothesis and its results.

When the scientist notices that a dark colored peppered moth over light colored background, he formulates a question: whether the difference in visibility affects the survival rate of dark moths or not? Therefore, next step in the scientific method would be to gather more information on the subject and formulate a hypothesis.

Answer:

the correct simple answer is B

Explanation:

According to the theory of plate tectonics, which forces cause the movement of plates in the earth's crust? A. Magnetism and Solar Radiation
B. Earthquakes and Volcanic Eruptions
C. Convection and The Moons Gravitational Pull
D. Convection and Gravity