The picture below shows the positions of the Earth, Sun, and Moon during an eclipse.
What is true of the eclipse shown in the picture?
A) It is a solar eclipse, in which the Earth casts a shadow on the Moon.
B) It is a lunar eclipse, in which the Earth casts a shadow on the Moon.
C) It is a lunar eclipse, in which the Moon casts a shadow on the Earth.
D) It is a solar eclipse, in which the Moon casts a shadow on the Earth.
Answers
Anybody on the night side of Earth saw the moon disappear during the past few hours.
This is a lunar eclipse. (B)
Answer:
The correct answer is the option B) It is a lunar eclipse, in which the Earth casts a shadow on the Moon.
Explanation:
A lunar eclipse is an astronomical phenomenon that occurs when the Earth passes directly between the Moon and the Sun, causing the Earth's shadow produced by sunlight to be cast over the Moon completely covering it. For this to happen, the three celestial bodies must be formed in a straight line.
Every year there are between 2 and 7 lunar eclipses. According to the position of the Moon with respect to the Earth's shadow, 3 types of lunar eclipses occur.
The difference between a lunar eclipse and a solar eclipse is that, in the first case, the Earth stands between the Moon and the Sun casting a shadow on the Moon, while in a solar eclipse, the Moon stands between the Sun and Earth, casting its shadow to a small part of the latter.
Finally, the correct answer is the option B) It is a lunar eclipse, in which the Earth casts a shadow on the Moon.
Related Questions
if an atom has 3 electrons and 3 protons, what is the charge on the atom
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if a swimmer pushes off a pool wall with a force of 250n, what is her acceleration.
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Her acceleration is
(250) divided by (the swimmer's mass, in kilograms).
The unit is " meters per second² " .
Kepler-186f is much closer to the sun than earth is to its sun. why is it considered to be in the habitable zone even though it’s close to a sun
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Its sun is cooler than our sun, so there is a possibility that water can exist in liquid state on this planet.
What word is used to describe an object that reflects 100% of the incident light?
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if a glacier is in equilibrium, where ablation is equal to the accumulation, what occurs in the terminus or 'snout'
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If a glacier is in equilibrium, where ablation is equal to the accumulation, either erosion nor deposition occurs in the terminus or 'snout'. It stops depositing rocks, the snow would stop falling at the terminu, the temperature would rise, It is neither advancing nor retreating anymore.
If a glacier is in equilibrium, its terminus remains stable as ice loss from ablation equals ice gain from accumulation. The glacier's terminus does not advance or retreat under these conditions.
If a glacier is in equilibrium, it means that the ablation (loss of ice) is equal to the accumulation (gain of ice). The point where this balance is achieved is the equilibrium line. If the glacier is in equilibrium, the terminus or 'snout' of the glacier remains at a stable position. While the ice continues to flow downslope, the position of the terminus does not advance or retreat because the amount of ice being lost to ablation is equal to the amount being gained through accumulation.
which has a higher acceleration:a 10kg object acted upon with a net force of 20N or an 18kg object acted on by a net force of 20N
Answers
Explanation:
According to Newton's Second law:
F = ma --- (A)
Let's find the acceleration for both 10 kg and 18 kg objects!
The net force on both of these masses = F = 20N
(1) Acceleration of 10 kg object
Mass = m = 10 kg
Plug in the values in equation (A):
20 = 10 * a
Acceleration = a = 2 m/s^2
(2) Acceleration of 18 kg object
Mass = m = 18 kg
Plug in the values in equation (A):
20 = 18 * a
Acceleration = a = 1.11 m/s^2
2 > 1.11; therefore, 10 kg object has the higher acceleration compared to the acceleration of the 18 kg object.
Explanation:
The expression of the applied force in terms of mass and acceleration by using Newton's second law is as follows;
F= ma
Here, m is the mass of the object and a is the acceleration of the object.
Calculate the acceleration of a 10 kg object acted upon with net force of 20 N in the above expression.
Put m= 10 kg and F= 20 N in the above expression.
20= (10)a
a= 2 m/s^2
Calculate the acceleration of a 18 kg object acted upon with net force of 20 N in the above expression.
Put m= 18 kg and F= 20 N.
20= (18)a
a= 1.11 m/s^2
Therefore, the acceleration of a 10 kg object acted upon with net force of 20 N is greater than the acceleration of a 18 kg object acted upon with net force of 20 N.
work transfers what between objects
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Answer:
Energy
Explanation:
The answe is "work transfers energy between objects".
There are different types of energy. Work is one of them and is a type of energy in transit.
So work is energy that is exchanged between objects or systems.
When work is done energy is tranferred by mechanical means (if the means are not mechanicals, the type of energy transferred is called heat), for example when pushing a box, energy is transferred to it so that it can move.
Explain what happens to the pitch of a cell phone ringing when the amplitude of a sound wave increases.
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the pitch of the cell phone ringing will remains same when the amplitude of a sound wave increases.
The pitch of a sound wave depends on its frequency. more frequency means higher pitch and less frequency means lower pitch. The amplitude of wave is the maximum displacement of the particles of the medium from their mean positions. Increase in amplitude will increase the loudness and not the pitch. So the pitch remains same as the amplitude of sound wave is increased.
PLEASE HELP!!!
Both Transverse and Longitudinal Waves transmit _______ and not ______.
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Both Transverse and Longitudinal Waves transmit in solids but only Longitudinal waves can transmit in fluids.
What are Transverse and Longitudinal waves?Longitudinal waves are defined as mechanical waves that require a medium for propagation while transverse waves are defined as non-mechanical waves that do not require a medium for propagation. Longitudinal waves have compressions and rarefactions, while transverse waves have crests and troughs.
Longitudinal waves can propagate in liquids but transverse waves cannot. Transverse waves propagate in the direction perpendicular to the medium but longitudinal waves propagate in the same direction with the medium. Both can transmit energy in a solid medium.
Thus, both Transverse and Longitudinal Waves transmit in solids but only Longitudinal waves can transmit in fluids.
Learn more about Longitudinal waves, here:
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what is the diurnal motion of the stars
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"The diurnal motion" of the stars is defined as the apparent daily motion of stars around the Earth. The cause for this "apparent motion of stars" was proposed by Heraclides (who was a Greek philosopher and astronomer). He afirmed that this was created by the Earth's rotation on its axis, which is completed in 23 hours, 56 minutes and 4.09 seconds.
You perform 556 J of work lifting a box to a height of 1.3m. How much force did you use to lift the box?
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[tex]W=Fd[/tex]
In our problem, W=556 J, and d=1.3 m (the box is lifted to a height of 1.3 m, so it covered 1.3 m from its initial point). Therefore we can find the force applied to lift the box:
[tex]F= \frac{W}{d}= \frac{556 J}{1.3 m}=427.7 N [/tex]
Answer:
The work is given 556 J. Here work is performed horizontally so your distance d=1.3 m
W=F.d
F=W/d =556/1.3 = 427.69 N
Explanation:
What is the difference between a constellation and an “asterism”? Name at least one commonly known asterism.
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ALL of the stars that go together to make up the complete dog or
the queen or the fish or the bear, or whatever else the story of
that particular part of the sky involves.
An "asterism" is a small, easily recognized group of stars, that
can be spotted right away, although they're only a small part
of a constellation.
The Big Dipper, the Little Dipper, Orion's Belt, and the Great Square
are asterisms. They're parts of the constellations of the Big Bear,
the Little Bear, Orion the Great and Mighty Hunter, and Pegasus,
respectively.
A constellation is a sector into which the sky is divided, while an asterism is a noticeable star pattern within a constellation. The Big Dipper is a commonly known asterism within the constellation of Ursa Major.
Explanation:A constellation is one of the 88 sectors into which the sky is divided. Each point in the sky falls within a specific constellation. On the other hand, an asterism is an especially noticeable star pattern within a constellation. The Big Dipper, which is an asterism within the constellation of Ursa Major, is a commonly known example.
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which object has the most gravitational potential energy
a. a 15 kg at a height of 0.5
b 10 kg at a height of 0.5
c a 10 kg at a height of 0.8
d a 15 kg at aheight of 0.8
Answers
The correct option is d.
The object with the most gravitational potential energy is 15 kg mass at a height of 0.8 meters.
To determine which object has the most gravitational potential energy, we'll use the formula for gravitational potential energy:
[tex]\[ U = mgh \][/tex]
Where:
- [tex]\( U \)[/tex] is the gravitational potential energy,
- [tex]\( m \)[/tex] is the mass of the object,
- [tex]\( g \)[/tex] is the acceleration due to gravity (approximately [tex]\( 9.8 \, \text{m/s}^2 \)[/tex]),
- [tex]\( h \)[/tex] is the height of the object above the reference point (in meters).
Now, let's calculate the gravitational potential energy for each object:
a. [tex]\( U_a = (15 \, \text{kg}) \times (9.8 \, \text{m/s}^2) \times (0.5 \, \text{m}) = 73.5 \, \text{J} \)[/tex]
b. [tex]\( U_b = (10 \, \text{kg}) \times (9.8 \, \text{m/s}^2) \times (0.5 \, \text{m}) = 49 \, \text{J} \)[/tex]
c. [tex]\( U_c = (10 \, \text{kg}) \times (9.8 \, \text{m/s}^2) \times (0.8 \, \text{m}) = 78.4 \, \text{J} \)[/tex]
d. [tex]\( U_d = (15 \, \text{kg}) \times (9.8 \, \text{m/s}^2) \times (0.8 \, \text{m}) = 117.6 \, \text{J} \)[/tex]
Comparing the results, the object with the most gravitational potential energy is 15 kg object at a height of 0.8 meters, with a gravitational potential energy of 117.6 J.
PLEASE HELP ASAP WILL GIVE BRAINLIEST <333
Answers
Answer 1) For calculating ΔU;
We can use the expression for the first law of thermodynamics which is,
ΔU = Q + W
Where ΔU is the Change in internal energy, Q is heat added to the system and W is the work done on the system.
As, Q = + 51 KJ and W = -15 KJ.
So, ΔU = 51 -15 = 36 KJ.
Hence, ΔU = 36 KJ
Answer 2) Using the same first law of thermodynamic equation for calculating ΔU (Internal Energy o the system) ;
ΔU = Q + W;
Given, Q = + 100 KJ and W = - 65 KJ
On substituting the values in the above equation we get,
ΔU = 100 - 65 = 35 KJ
Therefore, ΔU = 35 KJ
Answer 3) Using the same first law of thermodynamic equation for calculating ΔU (Internal Energy o the system) ;
ΔU = Q + W;
Given here, Q = - 65 KJ and W = - 20 KJ
On substituting the above values in the equation we get,
ΔU = -65 -20 = - 85 KJ
Therefore, ΔU = - 85 KJ for this system.
Answer 4) According to the answers in 1), 2) and 3) it can be seen that there has been change in the internal energies of the system for all, but some are positive changes and some are negative.
As per the definition of the internal energy, when the system does work on its surroundings, energy is found to be lost, and E is observed to be negative; and when the surroundings do work on the system, the internal energy of the system becomes larger, converting E into positive.
So, it is clear that in case 3) the system did work on the surroundings as E value is found to be negative, rest have positive E values.
Jonathan has six strings that are the same thickness and are all the same material. He cuts the strings to different lengths and pulls so that they all have the same tightness. Which string will have the highest pitch when he plucks it with his finger?
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Your answer is C.
The shortest string will have the highest pitch. This is because the pitch of a sound depends on the speed of its vibrations.
Is energy transformation only occurring at only point 3?
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In fact, the ball starts from point 1 with maximum kinetic energy and zero potential energy (taking the hand of the boy as reference level). The kinetic energy converts into gravitational potential energy as it goes higher: in point 2, part of the kinetic energy has converted into potential energy (because the velocity has decreased, while the height has increased), and then when the ball reaches point 3 all the kinetic energy has converted into potential energy (because now the velocity is zero, while the height is maximum). As the ball descends (point 4), the velocity starts to increase again, therefore the kinetic energy increases and the potential energy decreases (because the height is deacreasing now).
Summarizing, energy transformation is occuring in every point of the motion.
Final answer:
Energy transformation involves various types such as kinetic to potential energy, work to kinetic energy, and is influenced by the parameters of the system, including quantum mechanical constraints and relativistic observations. It can occur at different points, not just one.
Explanation:
Energy transformation in a physical system does not occur exclusively at one particular point unless specified by the conditions or constraints of that system. Different types of energy transformation include the conversion of kinetic energy to potential energy and vice versa, as well as the transformation of work into kinetic energy.
The details provided reference various energy concepts in physics, such as the transformation involved when light from the Sun shines on Earth, and energy conservation as applied to multiple dimensions.
In the realm of quantum mechanics, like the one described by 'equation (3.24)' and determining when one or three energy levels might exist, it typically involves solving the equation with the given parameters 'p' to find the allowed energy states. Alterations to the parameter 'p' could result in different energy states, hence affecting the number of observable energy levels.
Understanding the relationship between energy conservation and the direction of velocity is key when dealing with multidimensional problems.
Additionally, the example of Betty and Alice helps illustrate the relativistic effects on energy when observing a system from different reference frames, underlying the complexity involved when addressing conservation of energy in relativistic contexts.
describe the shapes of a concave lens and a convex lens
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This is from google btw.
Which of the following materials is a conductor of electric current? a wooden spoon,a plastic game piece,a glass window,a copper wire
Answers
Im going to eat lol! :)
its a copper penny hope this helps
HELP ASAP, PLEASE
Which of the following statements is true?
A.Plants don't use respiration to create energy.
B.Animals create energy using photosynthesis.
C.The atmosphere provides plants with carbon dioxide for photosynthesis.
D.The atmosphere provides animals with carbon dioxide for respiration.
Answers
Answer:
the other guy is incorrect because animals don't need carbon dioxide for respiration, they breathe in oxygen like us. all of them are incorrect except A.
Answer:
a
Explanation:
Because it is in bae which is breath and exhale
What two simple machines make up a screw?
Answers
.Inclined plane
.Lever
.Pulley
.Screw
.Wedge
.Wheel and axle.
Which of the following reflect the ideas of Manifest Destiny?
Select all that apply.
If a forklift raises a 76-kg load a distance of 2.5 m, about how much work has it done?
Answers
Final answer:
To calculate the work done by the forklift, we need to find the force exerted by the forklift and multiply it by the distance it raises the load. The force exerted by the forklift can be found using the formula Force = mass x gravity. The work done by the forklift is approximately 1864 Joules.
Explanation:
To calculate the work done by the forklift, we can use the formula:
Work = Force x Distance
First, we need to find the force exerted by the forklift. Since the load has a mass of 76 kg, we can use the formula:
Force = mass x gravity
where gravity is approximately 9.8 m/s^2 (acceleration due to gravity). So, the force exerted by the forklift is:
Force = 76 kg x 9.8 m/s^2 = 745.6 N
Now, we can calculate the work done by the forklift:
Work = 745.6 N x 2.5 m = 1864 J
Therefore, the forklift has done approximately 1864 Joules of work.
Which star is closest to earth?
A. Polaris
B. the sun
C. the Milky Way
D. Sirius
Answers
The answer is "B. The Sun".
If the earth’s gravity were much less powerful our atmosphere would be similar to
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Frequency is the number of oscillations (or cycles) per
1)Minute
2)hour
3)day
4)second
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The fourth step in the scientific method is
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The fourth in carrying out scientific investigation is to carry out experiment in order to test out the hypothesis that has been outlined earlier. Each experiment has its procedure which must be strictly followed in order to obtain valid results.
Final answer:
The fourth step in the scientific method is to accept or modify the hypothesis, dependent on whether the experimental data supports or contradicts it.
Explanation:
The fourth step in the scientific method is to accept or modify the hypothesis. After conducting experiments designed to test the hypothesis, a scientist must analyze the data collected. If the data supports the original hypothesis, it can be accepted and the scientist can proceed to the next step. However, if the data does not support the hypothesis, it may either be rejected or modified, often leading to further experimentation. This critical step ensures that scientific theories are continually refined and improved based on empirical evidence.
When sunlight strikes oil on the surface of water, a variety of colors are observed. What is the best explanation for this observation?
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The sunlight that falls on oil we perceive to be white in color. But in fact that light is made of all colors (purple, blue, red, green, yellow, orange, red...). All these colors have same intensity and come under same angle so they combine and give white light.
Each of these colors has different wavelength and different frequency. Depending on the wavelength of a color it refracts on oil under different angle. After exiting molecule of oil all color exit at different angle. This is reason that the do not combine and do not give white light. We see them as individual colors.
Technician A says that the burning of the air-and-fuel mixture in the cylinder is called fuel activation. Technician B says that the basic function of the upper-end components is to control the flow of air-and-fuel mixture into the engine and the flow of exhaust gases out of the engine after combustion. Who is right? A. Both Technicians A and B B. Technician A only C. Neither Technician A nor B D. Technician B only
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How this answer can be Verifies if it's wrong!?!?!
The picture below shows the positions of the Earth, Moon, and Sun during an eclipse.
What is true of the eclipse shown in the picture?
A) It is a solar eclipse, in which the Moon casts a shadow on the Earth.
B) It is a lunar eclipse, in which the Moon casts a shadow on the Earth.
C) It is a lunar eclipse, in which the Earth casts a shadow on the Moon.
D) It is a solar eclipse, in which the Earth casts a shadow on the Moon.
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Which of the following is responsible for the formation of sinkholes F. Eroding soil on Earths’s surface G. Ice that builds up on earths surface H. Deposition that has built up at the mouth of the river I. Flowing groundwater that dissolves rock , such as limestone
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Sinkholes are commonly formed by acidic groundwater dissolving limestone or other susceptible rock types underground, leading to the collapse of the surface into cavities created by such erosion. The correct answer is I. Flowing groundwater that dissolves rock , such as limestone
The formation of sinkholes is typically the result of groundwater flowing through and dissolving rock formations, such as limestone. When acidic groundwater moves through these rocks, it slowly erodes them, creating underground cavities.
Over time, as the rock continues to dissolve and the cavities grow larger, the land surface above can no longer be supported and collapses, forming a sinkhole. This type of underground erosion is especially effective when the groundwater contains carbonic acid, which is particularly good at dissolving limestone.
Acidic groundwaters and their reaction with basic rock formations like limestone are key in the development of sinkholes. Collapse sinkholes can form abruptly and are often dangerous as they remove support for the surface suddenly. In contrast to other options like eroding soil, ice buildup, or deposition, it is the flowing groundwater that typically leads to these hazardous and sometimes massive geographical features.
Explain how convections currents cause Earth’s plates to move continuously