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Physics

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Stars in the sky can appear brighter or dimmer than each other based on the star’s luminosity and from the Earth. A star’s is how bright the star appears from Earth, while a star’s is the actual brightness of a star, also called luminosity.H-R diagrams demonstrate the relationship between a star’s absolute magnitude/luminosity and . For main sequence stars, as the star’s temperature increases, so does its absolute magnitude.

Stars in the sky can appear brighter or dimmer than each other based on the star’s luminosity and ________ from the Earth. A star’s ________ is how bright the star appears from Earth, while a star’s ________ is the actual brightness of a…

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Comparison of Molecular Structure in Frozen Water

The author of this selection compares the molecular structure of frozen water to which of the following? A a star B a snowflake C a snowman D a honeycomb

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Advancements Made by Archimedes During the Hellenistic Age in Geography, Mathematics, Medicine, Philosophy

During the Hellenistic Age, Archimedes made advancements in geography. mathematics. medicine. philosophy.

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Identifying Self-Mapping Rotations of Line Segment AB about Point A

Use the protractor to determine which of the following rotations of line segment AB about point A (rounded to the nearest degree) will map the figure onto itself. 135° clockwise about point A 154° clockwise about point A 90° clockwise…

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Which of the following accurately explains why the telescopes that detect invisible waves, such as infrared, microwaves, and gamma rays, are placed in space?

Which of the following accurately explains why the telescopes that detect invisible waves, such as infrared, microwaves, and gamma rays, are placed in space? There are not enough places on land to build observatories that hold large…

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How have telescopes been designed to enable scientists to detect these different wavelengths

How have telescopes been designed to enable scientists to detect these different wavelengths? – Telescopes have been made bigger, so they can detect more wavelengths. – Telescopes have been made with materials to block out specific…

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Number of Neutrons in Nucleus

If the atomic number of an element is 6 and its mass number is 14, how many neutrons are contained in the nucleus? A. 20 B. 6 C. 14

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What are the possible coordinates of point A?

Point B has coordinates (5,2). The x-coordinate of point A is –7. The distance between point A and point B is 15 units. What are the possible coordinates of point A? The possible coordinates of point A are __. (Type an ordered pair. Use a…

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Is Axel’s statement correct?

Is Axel’s statement correct? Yes, because the vertical line shows that an input has exactly one output. Yes, because only one vertical line can be drawn for the test. No, because the relation does not pass the vertical line test for every…

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Drag and drop the colors to accurately put them in order on the visible light spectrum, from the lowest frequency waves to the highest frequency waves.

Drag and drop the colors to accurately put them in order on the visible light spectrum, from the lowest frequency waves to the highest frequency waves. Lowest Frequency Waves Please choose an answer Please choose an answer Please choose…

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How have telescopes been designed to enable scientists to detect these different wavelengths?

How have telescopes been designed to enable scientists to detect these different wavelengths? O Telescopes have been made with more mirrors to collect more wavelengths. O Telescopes have been made with materials to block out specific…

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Which of the following parts of the electromagnetic spectrum has the lowest frequency

Which of the following parts of the electromagnetic spectrum has the lowest frequency? gamma rays visible light infrared waves ultraviolet waves

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Which expression is represented by the shaded parts of the two figures?

Which expression is represented by the shaded parts of the two figures? 3/4 1 + 4/4 1 – 3/4 4/4 + 3/4

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Select the statement that accurately describes the distance between planets based on the data.

Select the statement that accurately describes the distance between planets based on the data. The distances between the sun and planets, and between each planet are not the same. The distances between the sun and the planets are not the…

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Which of the following supports the law of conservation of energy?

Which of the following supports the law of conservation of energy? The total amount of energy remains the same within the system. The total amount of matter remains the same within the system. The total amount of energy decreases within…

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Select the statement that accurately describes the contents of the container after four hours

Select the statement that accurately describes the contents of the container after four hours. There are more than 10 grams of water vapor in the bottle because gas takes up more space. There are less than 10 grams of water vapor in the…

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Will the wind chime fit inside the box?

A wind chime in the shape of a cylinder measures 16 inches long. Will the wind chime fit inside the box? Match the statement to the phrase that correctly completes it. A phrase can be used more than once or not used. The diagonal of the…

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Select all the sets of side lengths that will make a triangular shelf fit in a 90° corner of a room

Select all the sets of side lengths that will make a triangular shelf fit in a 90° corner of a room. 6 cm, 8 cm, 10 cm 2 cm, 3 cm, 4 cm 5 cm, 6 cm, 9 cm 3 cm, 4 cm, 5 cm 7 cm, 9 cm, 11 cm

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Which choice shows the image of quadrilateral WXYZ after a reflection over the x-axis followed by a translation to the right of 2 units?

Which choice shows the image of quadrilateral WXYZ after a reflection over the x-axis followed by a translation to the right of 2 units? A) B) C)

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What is the length of the incline plane used to lift a heavy object to the top of a shelving unit with a height of 7 ft and a base of 10 ft from the unit?

You are going to use an incline plane to lift a heavy object to the top of a shelving unit with a height of 7 ft. The base of the incline plane is 10 ft from the shelving unit. What is the length of the incline plane? The length of the…

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What is true about refracting telescopes?

Select the statement(s) that are true about refracting telescopes. used to view objects in space bends visible light to create an image too weak to view objects in space the type of telescope Galileo used magnifies the object and makes it…

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Drag and drop the colors to accurately put them in order on the visible light spectrum, from the lowest frequency waves to the highest frequency waves.

Drag and drop the colors to accurately put them in order on the visible light spectrum, from the lowest frequency waves to the highest frequency waves. indigo blue red yellow violet orange green

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Which one(s) contribute the most to the mass of a plant?

Which one(s) contribute the most to the mass of a plant? I. Soil II. Carbon III. Water A I only B II only C I and III only D II and III only

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What process occurs at the arrow marked B in the carbon cycle diagram?

Matter is constantly cycled between living and nonliving parts of the environment. Processes like photosynthesis and respiration allow the carbon cycle to regenerate needed substances by recycling Earth’s atoms. A diagram of the carbon…

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What are the components of the universe?

Drag and drop the words or phrases to accurately complete the model with labels of the components of the universe. nebula planet orbit star galaxy comet planetary system galaxy system

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How many squares are on the surface of the figure? Each square has an area of _ mm². So, the surface area of the figure is _ mm².

There are ___ squares on the surface of the figure. Each square has an area of ___ mm². So, the surface area of the figure is ___ mm².

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Compared to a snowflake in the air, a snowflake on the ground is …

Compared to a snowflake in the air, a snowflake on the ground is A. fragmented. B. larger and colder. C. unchanged. D. rounder and smoother.

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Comparing distances for A and B.

Drag each pair of distances to show if A is the greater distance, B is the greater distance, or if you cannot know for sure which is greater. A: 2/3 of a 40-yard dash B: 2/3 of a 100-yard dash A: 1/2 lap around a track B: 1/2 lap around a…

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Why did Herschel use the prefix “infra” to name invisible radiation?

Herschel used the prefix “infra” to name invisible radiation because it means A “inside,” since it was detected inside the known color spectrum. B “above,” since it was detected beyond the red domain of the known color spectrum. C…

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Which sentence explains why the cosmic microwave background experienced redshift?

Choose the sentence in this excerpt that explains why the cosmic microwave background experienced redshift. When the residual radiation was first emitted just a few hundred thousand years after the Big Bang, it was observable at a short…

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Place the types of radiation in the order in which they were discovered, starting with the earliest.

Place the types of radiation in the order in which they were discovered, starting with the earliest. x-radiation gamma radiation infrared radiation ultraviolet radiation

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Calculate the diameter of the supermassive black hole at the center of Centaurus galaxy in standard form to 3 s.f.

volume of a sphere = (4/3)πr³, where r is the radius. The mass of the Sun is 2 × 10³⁰ kg. The density of water is 1000 kg/m³. The Centaurus galaxy has a supermassive black hole at its centre. The mass of the black hole is 5.5 × 10⁷ times…

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Which pair of undefined terms is used to define a ray?

Which pair of undefined terms is used to define a ray? O line and plane O plane and line segment O point and line segment O point and line

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How do greenhouse gases cause the greenhouse effect?

Put the sentences into the correct order to explain the greenhouse effect. To change the position of a statement, click on the statement, then click on the up and down arrows to change its position. Greenhouse gases let shorter wavelength…

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What is the process that leads to an increase in temperature at the Earth’s surface as a result of Short wavelength infrared radiation emitted by the Sun entering the atmosphere, being absorbed by greenhouse gases, and being re-radiated back to Earth as heat energy?

Short wavelength infrared radiation emitted by the Sun enters the atmosphere and travels to the Earth’s surface Greenhouse gases absorb some reflected long wavelength radiation before re-radiating it as heat energy, some of which heads…

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The Earth absorbs a portion of this radiation, but _________________ wavelength radiation is reflected back into the atmosphere

The Earth absorbs a portion of this radiation, but _________________ wavelength radiation is reflected back into the atmosphere. shorter more dangerous longer none of the above

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Which of these equations best shows the cost to fix your car

The car you just bought keeps breaking down. The parts you need to buy cost $408.97. Your mechanic also charges $53 per hour for labor. Which of these equations best shows the cost to fix your car? Repair Charge = -53 • Hours of Labor +…

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Drag the measurements to the containers to show equal weight

Drag the measurements to the containers to show equal weight. 1000 milligrams (mg) = 1 gram (g) 1000 grams (g) = 1 kilogram (kg) 0.08 kg 80,000 mg 800 g 0.008 kg 8 g

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What intervals do the height of the tennis ball launched into the air as a function of time on?

The graph shows the height of a tennis ball launched into the air as time (in seconds) increases. The height of the ball is a(n) Choose… function of time on interval a, and a(n) Choose… function on interval b.

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What is the initial velocity and acceleration of the ball?

A ball starts from rest. It rolls down a ramp and reaches the ground after 4 seconds. Its final velocity when it reaches the ground is 7.0 meters/second. The initial velocity of the ball is ______ meters/second, and its acceleration is…

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A train leaves the station at time t = 0. Traveling at a constant speed, the train travels 390 kilometers in 3 hours. Answer parts a and b.

A train leaves the station at time t = 0. Traveling at a constant speed, the train travels 390 kilometers in 3 hours. Answer parts a and b. a. Write a function that relates the distance traveled d to the time t. The function that relates…

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Write a function that relates the distance traveled d to the time t

Write a function that relates the distance traveled d to the time t. The function that relates the distance traveled d to the time t is __. (Type an equation.)

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A train leaves the station at time t = 0. Traveling at a constant speed, the train travels 420 kilometers in 3 hours. Answer parts a and b.

A train leaves the station at time t = 0. Traveling at a constant speed, the train travels 420 kilometers in 3 hours. Answer parts a and b. a. Write a function that relates the distance traveled d to the time t. The function that relates…

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