which statements about the moon’s phases are true? check all that apply.

Answer:

b

Explanation:

sorry if im wrong

Answer:

See Below.

Explanation:

I can't transpose the diagram onto Brainly. I'll do my best to describe what is going on.

Now you are ready to develop the equation

Clockwise

There is only 1 force where B is the Balance point that is going clockwise

10 * Force A

The AntiClockwise Moments

Platform: 4*10kg * 9.8 = 392 N m

Physics T: 2 * 75 * 9.8 = 1470 N m

So the Anti Clockwise moments = the clockwise moments.

10 * Force A = 392 NM  + 1470NM   Divide by 10. Remember that is in meters

Force A = 1862 N M / 10 10 M = 186 N

Does that make some sort of sense? It should Student A is the furthest distance from where all the action is at B. Therefore he is carrying the lightest weight.

Now what is the total force?

(75 + 10 ) * 9.8 = 85 * 9.8 = 833

This is one of those strange things that won't make sense until it does. Read the next sentence carefully. B is carrying most of the weight. Remember Newtons measure weight.

Support of A = 186 N

Support of B = x

Total of A+B = 933

186 + x = 833

x = 933 - 186

x = 647

So the forces are

A supports    186

B supports    647

Sunlight will take 8 minutes to reach the Earth.

Sunlight is part of the electromagnetic radiation emitted by the Sun, especially infrared, visible and ultraviolet light.

Light is travelling with the speed of \(3 * 10^{8}\) m/s

Distance between Sun and Earth is 144 million km

1 km = 1000 m

1 million km = \(10^{6}\) km

\(10^{6}\) km = \(10^{9}\) m

144 million km = 144 * \(10^{9}\) m

According to the speed, distance and time relationship, speed is directly proportional to the ration of distance and time.

\(3 * 10^{8} = \frac{144 * 10^{9} }{Time}\)

Time = \(\frac{144 * 10^{9} }{3* 10^{8} }\)

Time = 480 sec

Time = 8 minutes

Time taken by the sunlight to reach the Earth's surface is 8 minutes.

To know more about Sunlight,

https://brainly.com/question/28447824

#SPJ1

The mass of methane will produce as much energy as a single gram of uranium-235 1,287 kilograms of methane. Option D is correct.

Uranium, with the atomic number 92 and the symbol U in the periodic table, is a weakly radioactive element. One of the heavy metals that may be used as a concentrated energy source is uranium.

Given data;

⇒One mole of U-235 = 235 grams

=> 1 gram of U-235 = 1/235 moles

⇒1 mole of U-235 = 6.023 x 10²³ atoms

The no of atoms is;

=> 1/235 moles of U-235

⇒N = 6.023 x 10²³/235 atoms

⇒N=25.6 x 10²⁰ atoms

If one atom of U-235 gives is 189 x 10⁶ eV energy,25.6 x 10²⁰ atoms of U-235 gives;

=> 25.6 x 10²⁰ atoms of U-235 gives;

E = 25.6 x 10²⁰ x 189 x 10⁶

E= 4.8 x 10²⁹ eV energy

One methane molecule produces;

E = 10 eV of energy

=> To produce 4.8 x 10²⁹ eV energy, no. of molecules required;

= 4.8 x 10²⁸

6.032 x 10²³ molecules of methane = 16 gms

=> 4.8 x 10²⁸ molecules of methane = 16 x 4.8 x 10²⁸/ 6.032 x 10²³ gms

m= 12.75 x 10⁵ gms

m= 1275 kilograms of methane

m≅ 1287 kilograms of methane

1 gram of U-235 has the same amount of energy as 1287 kilograms of methane.

Hence option D is correct,

To learn more about uranium refer to the link;

https://brainly.com/question/9099776

#SPJ1

Cubic/volume expansivity is the increase in volume per unit volume of a substance for every one degree Celsius rise in temperature.

Answer:

6J

Explanation:

simply apply kinetic energy definitoon:

\(k = \frac{1}{2} mv {}^{2} = \frac{1}{2} 3 \times 2 {}^{2} = 6\)

Weak interaction, also called weak force or weak nuclear force, a fundamental force of nature that underlies some forms of radioactivity, governs the decay of unstable subatomic particles such as mesons, and initiates the nuclear fusion reaction that fuels the Sun.

Given:

A ball bouncing eventually comes to stop.

To find:

What kind of a system is this?

Explanation:

An open system is a system where the free exchange of matter and energy with the surroundings takes place.

A closed system is where only the energy of the system is shared with the surrounding. In these kinds of systems, the exchange of matter does not take place.

An isolated system is where neither matter nor energy is exchanged between the system and the surrounding.

When a ball is bouncing, it gradually loses its kinetic energy to the surroundings and eventually comes to stop. But the mass of the ball remains the same. Thus this is a closed system.

Final answer:

The given system is a closed system.

Therefore the correct answer is option B.

Answer:

Centripetal acceleration = 16 m/s²

Explanation:

Given the following data;

Velocity = 20 m/s

Radius, r = 25 m

To find the centripetal acceleration;

Mathematically, centripetal acceleration is given by the formula;

Centripetal acceleration = velocity²/radius

Centripetal acceleration = 20²/25

Centripetal acceleration = 400/25

Centripetal acceleration = 16 m/s²

car's maximum cornering speed on a rainy day when the coefficient of static friction has been reduced by 50% is 27.58 m/s

Car's maximum speed at dry Sunny day,

Vs = √μrg = 39 m/s

Speed at rainy day, μ becomes 0.5μ

Vr = √(0.5*μ*r*g) =√(0.5) * (39) = 27.57716

Vr = 27.58 m/s

An object experiences static friction when a force is applied to it; as a result, the object resists the applied force and stays at rest until static friction is removed. In kinetic friction, the frictional force opposes an object's motion. An item is kept at rest by the force of static friction. The phrase "static friction" can be defined as "the friction people perceive when they attempt to move a stationary object on a surface, but without actually causing any relative motion in between  surface and the body it is on. A force acting in opposition to the direction of a moving body on the surface is felt.

Learn more about static friction here:

https://brainly.com/question/13000653

#SPJ4

Answer:

Radioactive Decay

Explanation:

The statement that the iron in our blood came from a star that exploded more than 4 billion years ago makes complete sense and is scientifically true. The reason why we have iron in our bodies is because it was created through the process of nuclear fusion inside stars

Iron is a very important element that is essential for human life. It is a critical component of hemoglobin, the protein in red blood cells that transports oxygen from the lungs to the rest of the body. However, iron is not naturally produced in the human body. Instead, it must be obtained through the food we eat or through supplements.

The reason why we have iron in our bodies is because it was created through the process of nuclear fusion inside stars. When a star reaches the end of its life and explodes in a supernova, it releases a massive amount of energy and creates heavy elements like iron. These elements are then scattered throughout the universe, eventually finding their way into planets and other celestial bodies.

Our own solar system is thought to have formed from the remnants of a supernova that exploded billions of years ago. This means that the iron in our bodies was likely created in the heart of a massive star that exploded long before our planet even existed. This statement highlights the interconnectedness of the universe and how the elements that make up our bodies are ultimately derived from the stars themselves.

Know more about blood here:

https://brainly.com/question/920424

#SPJ11

The resultant velocity of the parachute is 3.4 m/s.

The term resultant velocity refers to the effective velocity  with which the parachute moves. We know that velocity is a vector quantity. Recall that a vector is known to have both magnitude and direction.

Given that the magnitude of the resultant vector can only be obtained geometrically we have;

Vertical component =   3.0 m/s

Horizontal component = 1.6 m/s

Resultant velocity = √(3)^2 + (1.6)^2

= 3.4 m/s

Learn more about resultant velocity:https://brainly.com/question/9163788

#SPJ1

Answer:

its option c the age of a fossil can be determined

Answer:

see below

Explanation:

Gases flying out at high velocity out the back  

  rocket flying forward

Answer:

In order to walk across the floor, you push backwards on the floor with your foot. Newton's Third Law says that the reaction force to this action force is "floor pushes you forward" (Action: You push floor (backwards). Reaction: floor pushes you (forward).) So, when you walk, it is the floor that pushes you along!

Explanation:

.

Answer:

I thinl it is I'm not sure though

Answer:

Imma say false

Explanation:

Just my opinion

Heya!!

For calculate aceleration, lets applicate second law of Newton:

                                                   \(\boxed{F=ma}\)

                                                 Δ   Being   Δ

                                             F = Force = 78,3 N

                                            m = Mass = 24,5 kg

                                             a = Aceleration = ?

⇒ Let's replace according the formula and clear "a":

\(\boxed{a=78,3\ N / 24,5\ kg}\)

⇒ Resolving

\(\boxed{a=3.19\ m/s^{2}}\)

Result:

The aceleration is 3,19 meters per second squared (m/s²)

Good Luck!!

Answer:

21: Mass

22: Unbalanced Force

23: Friction

24: Balanced

Explanation:

The four things that the astronomer has to do to read messages he receives from space are as follows: Data Collection, Data Processing, Data Analysis, Interpretation and Communication.

Data Collection: The astronomer uses specialized instruments, such as radio telescopes, optical telescopes, or spectrographs, to collect the incoming signals or light from space.

These instruments capture the electromagnetic radiation emitted by celestial objects or any other signals of interest.

Data Processing: Once the data is collected, it needs to be processed and converted into a usable format. This involves removing noise, calibrating the data, and applying various correction techniques.

The astronomer may use computer software or algorithms to enhance the quality and interpret the data effectively.

Data Analysis: After the initial processing, the astronomer analyzes the data to extract meaningful information. This involves studying patterns, identifying specific features, and comparing the data with known models or theoretical predictions.

The analysis may include techniques like statistical analysis, image processing, spectral analysis, or data visualization.

Interpretation and Communication: Based on the analysis, the astronomer interprets the findings and draws conclusions about the messages or phenomena observed.

This may involve identifying the presence of specific signals, understanding their characteristics, determining their origin or nature, and assessing their significance in the context of astrophysics or extraterrestrial communication.

The astronomer then communicates the results through research papers, scientific conferences, or other means to share the findings with the scientific community and the public.

It's important to note that the exact steps and techniques involved may vary depending on the nature of the received messages and the specific instruments and technologies used by the astronomer.

To learn more about conferences, refer below:

https://brainly.com/question/9753882

#SPJ11

Answer:

-201

Explanation:

Got it right on Acellus

Answer:

-201

Explanation:

acellus

Answer:

B and D

Explanation:

A is wrong because objects with mass have gravity and the Earth and Sun both have mass. As we know, the Earth orbits around the Sun and the reason si because gravity.

B is corrects because throughout the whole universe there are objects like planets and meteors and more. All these objects have gravity because they have mass.

C Gravity pulls things together that is why we are on Earth and not pushed away into space.
D is correct, using Sun and a meteor. When a meteor comes within the gravity range of the sun, the sun pulls the meteor toward it. Without anything around the sun, nothing happens because there is nothing to pull.

Answer:

#carryonlearning

If the wavelength of the light in water is 729 nm and its wavelength in glass is 541 nm. This means that the light will be refracted as it passes through the interface because the speed of light is slower in glass than in water.

The angle of refraction can be calculated using Snell's law, which states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the refractive indices of the two materials.

Assuming that the angle of incidence is known, we can use Snell's law to calculate the angle of refraction, which will determine the path of the transmitted light. We can also calculate the amount of light that is reflected using the Fresnel equations, which take into account the polarization of the light and the angle of incidence.

Overall, the behavior of the light at the interface between water and glass is determined by the properties of the two materials and the characteristics of the light itself.

If you need to learn more about wavelength click here:

https://brainly.com/question/28995449

#SPJ11

Answer: D just took the test

Explanation:

Answer:

D

Explanation:

Given the production rules below, is the plus operator (+) left-associative, right-associative, or neither a parse tree of it is in the explanation part below.

In the provided production rules, the addition operator (+) is left-associative.

Consider the statement "1 + 2 + 3" to show this.

This sentence's parse tree is as follows:

The addition operator's left-associativity is shown in this parse tree. The operands 1 and 2 are combined by the leftmost plus operator, and the resultant total is merged with the operand 3 by another plus operator. This depicts the assessment of the statement "1 + 2 + 3" from left to right.

If the plus operator were right-associative, the parse tree would be different, with the rightmost plus operator first combining operands 2 and 3, and then combining the resultant sum with operand 1.

Thus, the parse tree is attached below as image.

For more details regarding parse tree, visit:

https://brainly.com/question/12975724

#SPJ4

(a) The mass flow rate of entering atmospheric air is approximately 76.7 kg/s. (b) The mass flow rate of makeup water is approximately 759.6 kg/s.

(a) Using the psychrometric chart, we can determine the specific humidity of the entering atmospheric air to be approximately 0.0133 kg/kg. The mass flow rate of air can be calculated as the ratio of the heat transfer rate to the product of the specific heat of air and the temperature difference between the entering and exiting air. Thus,

(b) Since the system is at steady state, the mass flow rate of makeup water must equal the mass flow rate of cooled water leaving the tower. Using the energy balance, we can calculate the heat transferred from the condenser to the cooling water and then equate it to the product of the mass flow rate of water, the specific heat of water, and the temperature difference between the entering and exiting water. Solving for the mass flow rate of makeup water, we get

To learn more about mass flow rate, here

https://brainly.com/question/13348162

#SPJ4