PLEASE HELP!!! DUE SOON!!! NO LINKS OR RANDOM WORDS!!
What is a "waxing" moon?
-An increase in the visible part of the moon as the days progress
-A decrease in the visible part of the moon as the days progress
-Another name for full moon
-Another name for new moon
Answers
Related Questions
Describe two possibilities of what will happen to the universe in the future.
Answers
i hope this helps :)
The Universe in the future have two possibilities:
The Universe will come to an end in the opposite of a Big Bang called The Big Crunch. The other possibility is that we live in an Eternal Universe that will never come to end.What is universe?Universe is the whole cosmic system of matter and energy. The Earth, the Sun, the Moon, the planets, the stars along with the dust , gases, rocks forms the universe.
The big bang is the theory which explains that how the universe began. It says that the universe began with just a single point. It went on expanding and stretched to grow as large as possible. It is still now expanding.
The universe consist of fully dark matter, interstellar gases or dust. The big bang is increasing just because in universe there is abundant of hydrogen and helium. The two possibilities:
The Universe will come to an end in the opposite of a Big Bang.The other possibility is that we live in an Eternal Universe that will never come to end.This universe is still on it way of expanding more.
Thus, the future possibilities of universe are explained.
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What is thermal energy.
Answers
Explanation:
thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat the flow of thermal energy
k
B
T
{\displaystyle k_{\mathrm {B} }T}, in a system that is described in terms of its microscopic particulate constituents, where
T
T denotes temperature and
k
B
k_{\mathrm{B}} denotes the Boltzmann constant.
I learned this last week in my Sci-tech class!
if the temperature at a point (x, y, z) in a body is u(x, y, z), then the heat flow is defined as the vector field f = −k∇
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The negative sign in the equation indicates that heat flows from regions of higher temperature to regions of lower temperature. The gradient, u(x, y, z), represents the spatial rate of change in temperature, and the thermal conductivity, k, is a proportionality constant that determines how easily heat flows through the material.
Now, to understand the concept of heat flow, we need to first understand what a gradient is. In calculus, the gradient of a function represents the direction and magnitude of the steepest increase of the function at a given point. In the case of temperature, the gradient of the temperature function represents the direction and magnitude of the steepest increase in temperature at a given point.
The negative sign in the equation indicates that heat flows from regions of higher temperature to regions of lower temperature. The gradient, u(x, y, z), represents the spatial rate of change in temperature, and the thermal conductivity, k, is a proportionality constant that determines how easily heat flows through the material.
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After completing the reading, please answer the following questions.
1. Which of the following would have the greatest force?
a. A 20-kg ball with an acceleration of 1 m/s2
b. A 10-kg ball with an acceleration of 2 m/s2
c. A 25-kg ball with an acceleration of 2 m/s2
d. A 15-kg ball with an acceleration of 5 m/s2
Answers
Answer:
Net force is always m•a. In this case, the velocity is constant so the acceleration is zero and the net force is zero.
Explanation:
Apply the Pauli exclusion principle to determine the number of electrons that could occupy the quantum states described by the following.
(a)
n = 4,
ℓ = 1,
mℓ = −1
_____ electrons
(b)
n = 4,
ℓ = 3
____ electrons
Answers
The number of electrons that could occupy the quantum states described by n = 4, ℓ = 1, and mℓ = −1 is 2.
(a) The quantum numbers given represent the 4p orbital. According to the Pauli exclusion principle, each orbital can accommodate a maximum of two electrons with opposite spins.
The number of electrons that could occupy the quantum states described by n = 4 and ℓ = 3 is 14.
(b) The quantum numbers given represent the 4f subshell. The number of orbitals in the 4f subshell is 7, and each orbital can accommodate a maximum of 2 electrons with opposite spins.
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Which of these would have the highest temperature?
ice
water
water vapor
Answers
Answer:
Water vapor
Explanation:
Water Vapor has the highest temperature, due to its being in a gas state, and gases usually have very high temperatures, for example steam when you boil pasta.
Hope this helps you! Have a nice day!
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2. What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2 . What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
–1.6 × 103 N
–1.63 × 103 N
–2.4 × 103 N
–5.27 × 104 N
Answers
The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N
How do I determine the gravitational force?The gravitaional force between two objects can be obtained by using the following formula:
F = GM₁M₂ / r²
Where
F is the gravitaional force G is the gravitational constant M₁ and M₂ are the masses of the objects r is the distance apartThe following data were obtained from he question:
Mass of satellite (M₁) = 5400 = 5.4×10³ KgHeight (h) = 30000 km = 30000 × 1000 = 30000000 mMass of Earth (M₂) = 6.0×10²⁴ KgRadius of Earth (R) = 6400 km = 6400 × 1000 = 6400000 mDistance apart (r) = R + h = 6400000 + 30000000 = 36400000 mGravitational constant (G) = 6.673×10¯¹¹ Nm²/Kg²Gravitational force (F) =?The gravitaional force can be obtained as shown below:
F = GM₁M₂ / r²
F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²
F = 1.63×10³ N
Thus, the gravitational force is 1.63×10³ N
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LaCie kicks a football from the ground level at a velocity of 13.9 m/s and at angle of 25 degrees to the ground. You have determined that the football would travel 15.1 m before landing. How would this value change if the football was kicked at an angle of 35 degrees? Complete all equations without rounding and then round to the nearest tenth at the end
Answers
The ball will travel more distance when projected or kicked at an angle of 35 degrees.
What is the range of projectile?
The range of the projectile or the horizontal distance traveled by the ball is calculated by applying the following kinematic equation as shown below.
R = ( u² sin (2θ ) ) / g
where;
u is the initial velocity of the ballg is the acceleration due to gravityThe horizontal distance traveled by the ball when projected at 35 degrees is calculated as;
R = ( 13.9² x sin ( 2 x 35 ) ) / ( 9.8 )
R = 18.53 m
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A bar of mass M and length L = 4 meters is pivoted on a fulcrum that is d = 1.8 meters away from the left end. Attached to the left end, a mass m = 5 kg hangs at rest and keeps the system in equilibrium. What is the mass of the bar?
Answers
The given problem can be exemplified in the following diagram:
The weight of the bar is concentrated in its center of mass which is located in the middle of the longitude of the bar. We can add the total torques at the point where the pivot touches the bar and we get:
\(\Sigma T=(5\operatorname{kg})(g)(1.8m)-(2m-1.8m)(Mg)\)Here we have used momentum counter-clockwise as positive. Since the system is in equilibrium the sum of the torques must be equal to zero:
\((5\operatorname{kg})(g)(1.8m)-(2m-1.8m)(Mg)=0\)Now we solve the operations, we will use for the acceleration of gravity 9.8 meters per second squared:
\(88.2Nm-1.96M=0\)Now we solve for the mass "M" first by subtracting 88.2Nm from both sides:
\(-1.96M=-88.2Nm\)Now we divide both sides by -1.96:
\(M=\frac{-88.2Nm}{1.96m\frac{m}{s^2}}\)Solving the operations we get:
\(M=45\operatorname{kg}\)Therefore, the mass of the bar is 45 kg.
An object is moving to the right at a constant velocity. What will happen if a
force of 20 N starts acting on it in the opposite direction?
А The object's velocity will increase.
B
The object's velocity will decrease.
с
The object will come to a stop.
D
The object will move at the same velocity.
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helppppppppppppppppp
Answers
Answer:
It is A when the firework explodes it creates heat and which makes different colors
Explanation:
strike two tuning forks, one with frequency of 340 hz, the other 342 hz. what will we hear
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You will hear a phenomenon called beating, with a beat frequency of 2 Hz, resulting in alternating constructive and destructive interference between the two tuning forks.
When you strike two tuning forks with slightly different frequencies (340 Hz and 342 Hz), the sound waves they produce will interfere with each other. This interference creates a pattern of alternating constructive and destructive interference.
Constructive interference occurs when the waves are in phase, making the sound louder, while destructive interference occurs when they are out of phase, making it quieter. The difference in frequencies (342 Hz - 340 Hz = 2 Hz) determines the beat frequency, which is the rate at which the loudness fluctuates. In this case, you will hear beats occurring 2 times per second, resulting in a rhythmic pulsing sound.
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When burning fuel for cooking, the pan and the food absorb energy and heat up. In this process, which form of energy is chemical energy converted into?
atomic energy
radiant energy
mechanical energy
thermal energy
Answers
Answer:
thermal energy
Explanation:
Answer:
D. Thermal Energy
Explanation:
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Sandra~
identify and discuss one of the sources of failure common to both the therac-25 and the ariane 5 rocket? what could have been done to avoid this problem?
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One common source of failure in both the Therac-25 and the Ariane 5 rocket was inadequate software testing and validation. Proper testing and validation procedures are essential to identify and rectify potential issues before deployment.
To avoid these problems, rigorous and comprehensive software testing and validation protocols should have been implemented. This includes thorough unit testing, integration testing, system testing, and stress testing to identify and resolve software flaws and ensure proper functionality. In addition, employing formal methods and techniques, such as code inspections, static analysis, and model checking, could have helped to detect and prevent potential errors. Furthermore, conducting extensive real-world simulations and test scenarios prior to deployment would have provided valuable insights into the system's behavior, enabling the detection and resolution of critical issues. Implementing proper software development processes and following industry best practices, such as establishing a robust change management system and adhering to coding standards, would have also contributed to reducing the risk of failure.
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Why did people think that Pluto was a planet in the decades after its discovery
Answers
Answer:
Pluto is no longer considered a planet as a result of it's small size on the IAU scale.
Explanation:
What happens to the average kinetic energy of a substance as its temperature increases?
A. It decreases, then increases.
B. It remains the same.
C. It increases.
D. It decreases.
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Answer:D
Explanation:
What would be the volume of a liquid that has a density of 1.2 g/mL and a mass of 24 grams
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Answer:
The answer is 20 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
\(volume = \frac{mass}{density} \\\)
From the question
mass = 24 g
density = 1.2 g/mL
We have
\(volume = \frac{24}{1.2} \\ \)
We have the final answer as
20 mLHope this helps you
PART OF WRITTEN EXAMINATION:
are naturally-occurring dynamic stray currents that
are caused by disturbances in the earth's magnetic field by sun spot activity.
A) telluric currents
B) dynmaic stray currents
C) steady state stray currents
Answers
The answer to your question is A) telluric currents. Telluric currents are naturally-occurring electric currents that flow within the Earth's crust and upper mantle.
These currents are caused by the interaction between the Earth's magnetic field and the ionosphere, which is the layer of the Earth's atmosphere that is ionized by the sun's radiation. Sun spot activity can cause disturbances in the Earth's magnetic field, which can in turn affect the strength and direction of telluric currents.It is important to note that while telluric currents are caused by the interaction between the Earth's magnetic field and the sun's radiation, they are not the same thing as magnetic fields or magnetic currents. Magnetic fields are a fundamental force in nature that are generated by the motion of charged particles, while magnetic currents refer to the flow of electric charge within a magnetic field.Overall, the study of telluric currents is an important field of research that has many practical applications, such as in the exploration for mineral resources and the detection of underground structures. By understanding the complex interplay between the Earth's magnetic field and the sun's radiation, scientists can gain valuable insights into the inner workings of our planet and the forces that shape it.
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A toddler pushes his 7.0 kg toy box at a relatively constant velocity across the tiled floor of the family room applying a horizontal force of 35 N. Calculate the magnitude of the normal force.
Answers
Answer:The coefficient of friction between the box and the floor, = 1.456 × 10⁻²
Explanation:
Friction between two bodies keeps them from moving relative to one another. The box's and the floor's coefficient of friction is 5.102 x 10² N.
What is friction force?Friction force is defined as the pressure that prevents motion when the surfaces of two objects come into contact.
It can also be defined as the force preventing sliding solid surfaces, fluid layers, and material components from moving relative to one another.
Mass = 7.0 kg
Velocity is constant.
Force = 35 N
As we know
Net force = Toddler force - Frictional force = 0
Toddler force = Frictional force = 35 N
Frictional force = Weight of box × Coefficient of friction
Coefficient of friction = Frictional force / Weight of box
Weight of box = 7.0 x 9.8 = 68.6 N
Coefficient of friction = 35 / 68.6
= 5.102 x 10² N
Thus, when two bodies come into contact, the friction force prevents relative motion. The box's and the floor's coefficient of friction is 5.102 x 10² N.
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If you pull up on a bucket with a tension force of 15 N and the bucket has a weight of 15 N, what is the net force acting on the bucket?
15 Nup
15 N down
30 N up
O N
Answers
Answer:
F = 0 [N]
Explanation:
To solve this problem we must perform a summation of forces in the direction of the vertical axis. Where the positive force is that of the tension of the upward force, while the force exerted by the weight is directed downward with a negative sign.
ΣF = 0
15 - 15 + F = 0
F = 0 [N]
Write the working mechanism of Mercury Barometer and explain its parts in short.
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Answer:
as I know about barometer consist of a mercury .
it can be made with a clean ,dry, thick walled glass tube of about one metre long .
the working mechanism can be given by:
when there is air pressure the mercury in the glass goes against the air pressure to balance itself .
If the weight of mercury is less than atmospheric pressure then the mercury will rise upwards and vice versa.
I think no need to explain the parts u can do it your self as it consist of testube and mercury as main components.if u want the explanation then use search engines to reshearch.
hope this helped you
comment if got any confusion .
13. Which one of the colors has the longest wavelength A, Red B. Yellow C. Blue 14. The sky appears blue due to A. Diffraction of light C. Refraction of light B. Reflection of light D. Scattering of light
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13.The color with the longest wavelength is option A. Red.
14.The sky appears blue due to option D. Scattering of light.
Red light has a longer wavelength compared to yellow and blue light.The color that has the longest wavelength is red. The color of the sky appears blue due to scattering of light. The distance between one peak and the next in a series of waves, particularly electromagnetic waves traveling through space or along a wire is referred to as wavelength.
The wavelength of light, for example, determines its color. Red light has the longest wavelength, followed by orange, yellow, green, blue, and purple, with violet light having the shortest wavelength. When light is reflected off a surface or passes through a medium, it can be deflected in various directions, a phenomenon known as scattering of light.
The Earth's atmosphere scatters sunlight in all directions, but the shorter blue wavelengths are scattered more than the longer wavelengths. As a result, we perceive the sky as blue during the day. The light becomes scattered when it interacts with particles in the atmosphere, causing the sky to appear blue during the day and red during sunset or sunrise. The scattering of light is the process that causes the sky to appear blue.
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Escriba un texto sobre el significado que ha tenido para la humanidad la utilización de la electricidad
Answers
Explanation:
La electricidad fue uno de los mayores inventos tecnológicos y científicos del mundo que permitió una gran evolución de la sociedad.
Es a través de la electricidad que podemos realizar tareas que parecen tan habituales en la actualidad, como usar luz eléctrica, usar internet, conservar alimentos, tomar baños calientes, y otras tareas que forman parte de la rutina diaria de miles de personas alrededor del mundo. mundo.
Por tanto, es importante observar en un contexto general cómo la electricidad ha traído beneficios a la humanidad, como la conservación de los alimentos por ejemplo, que ha facilitado la vida cotidiana.
En el entorno empresarial, la electricidad posibilitó la creación de máquinas, la automatización del trabajo, lo que facilita las funciones de los empleados, aumenta la seguridad de la empresa, permite el crecimiento empresarial y la aparición de muchos productos y servicios que existen en la economía actual.
En medicina ayudó en el tratamiento de enfermedades, en la creación de medicamentos, etc.
En la sociedad, la electricidad hace posible el saneamiento, permite una mejor calidad de vida para las personas, un mayor intercambio de información y varios otros desarrollos que tienen un impacto directo en la vida de cualquier persona.
Why is strong cybersecurity needed when transmitting personal information using digital signals
Answers
Answer:
Strong cyber security is required when any personal information is transmitted through digital signals. There can be possible breach of information from the lines.
Explanation:
The digital signals are important and has made life easier in todays world. On the other hand it has expose humans to great risks of confidentiality breach. The personal information can be stolen through hacking by digitals technology which can be used for illegal purposes. Sometimes hackers even ask for ransom to release the personal information that is blocked.
Answer:
It keeps data safe while stored in the cloud and when they are
transmitted
trust me i just did it
Explanation:
30kg Michaela is swinging on a swing. Her total mechanical energy is 600 J. At what height will she be when she has a velocity of 2 m/s?
Please show all work!
40 points!!
Answers
Answer:
1.84 m
Explanation:
ME = KE + PE = 1/2mv² + mgh
600 J = 1/2(30 kg)(2 m/s)² + (30 kg)(9.8 m/s²)h
Solve for h:
600 J = 60 J + (294 kg·m/s²)h
h = 540J/294kg·m/s² = 1.84 m
a section of hollow pipe and a solid cylinder have the same radius, mass, and length. they both rotate about their long central axes with the same angular speed. which object has the higher rotational kinetic energy?
Answers
Answer:
Teniendo dos tuberías, una hueca y otra sólida, con la misma masa, radio y longitud, ambas poseen la misma rapidez angular, entonces el cuerpo hueco tendrá mayor energía cinética rotacional que la tubería sólida, esto es debido a que el tubo hueco tiene mayor inercia rotacional.
La ecuación de energía rotacional viene dada como:
Er = (1/2)·I·ω
De esta manera tenemos que el tubo hueco tiene mayor inercia rotacional que el tubo sólido, por ende, mayor energía.
Explanation:
A copper wire has a circular cross section with a raduis of 1.25mm. If the wire carries a current of 3.70A, find the drift speed of electron in this wire.
Answers
Answer: 0.043mm/s
Explanation:
The drift speed of electron in this wire will ba calculated as:
= I/nqA
= I/nqπr²
= 3.7/[(1.1 × 1^29) × (1.6 × 10^19) × (3.14 × 0.00125²)
= 4.3 × 10^-5
= 0.043mm/s
The drift speed of the electron in this wire is 0.043mm/s.
what are the three essential diagnostic features of anorexia nervosa
Answers
1. Restriction of energy intake: This involves significantly limiting the amount of food intake, leading to low body weight in relation to age, sex, developmental trajectory, and physical health. It is often accompanied by a fear of gaining weight or becoming fat.
2. Intense fear of gaining weight or becoming fat: Individuals with anorexia nervosa have an excessive and persistent fear of gaining weight, even when they are significantly underweight. They may have distorted body image perceptions and a preoccupation with their shape and weight.
3. Disturbance in self-perceived weight or shape: Anorexia nervosa is characterized by a persistent lack of recognition of the seriousness of low body weight and its impact on health. Despite being underweight, individuals with anorexia may still perceive themselves as overweight or have a distorted body image.
These diagnostic features are crucial for identifying and diagnosing anorexia nervosa, but it is important to consult a qualified healthcare professional for a comprehensive evaluation and diagnosis.
The three essential diagnostic features of anorexia nervosa, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), are:
Restriction of energy intake relative to requirements: This refers to the persistent limitation of food intake, leading to significantly low body weight. Individuals with anorexia nervosa often engage in severe dieting, calorie counting, Intense fear of gaining weight or becoming fat: People with anorexia nervosa have an intense and irrational fear of gaining weight, even when they are already significantly underweightDisturbance in self-perceived weight or shape: DSM-5 An essential feature of anorexia nervosa is the presence of a distorted perception of one's body weight or shape.It is important to note that these diagnostic features must be present and significantly impair the individual's functioning in order to meet the criteria for anorexia nervosa. Additionally, there may be other associated features and behaviors,
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the action spectrum is broader than the absorption spectrum because
Answers
The action spectrum is broader than the absorption spectrum because it takes into account all wavelengths of light that can drive a particular biological process, not just those absorbed by a specific pigment.
The action spectrum shows the efficiency of a biological process, such as photosynthesis or vision, at different wavelengths of light. It measures the biological response to each wavelength, regardless of which pigment is responsible for absorbing the light.
On the other hand, the absorption spectrum only shows the wavelengths absorbed by a particular pigment, such as chlorophyll or rhodopsin. Therefore, the action spectrum is broader than the absorption spectrum because it considers all the wavelengths that can activate the biological process, while the absorption spectrum only shows the wavelengths absorbed by a specific pigment.
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Students performed multiple trials of a tennis ball rolling across the floor and recorded their observations in the table shown below.
Trial Observation
1 rolled toward the left for 6 meters before stopping
2 rolled 12 meters in 5 seconds before stopping
3 stopped after it rolled 4 meters in 2 seconds
4 stopped after it rolled toward the right for 3 meters in 1 second
From which trials can the velocity of the tennis ball be determined?
A.
4 and 2
B.
3 and 1
C.
1 and 4
D.
2 and 3
Answers
The trials where the velocity of the tennis ball is to be determined should be option c. 1 and 4.
What is velocity?It is the quantity of the vector that defined the rate where an object is to be changed the position. Here the person could be imagined and then moved in a rapid way like one step forward and one step back.
So here it should be rolled to the left hand side and it can be stopped after it rolled towards the right hand side.
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