What causes moons to orbit planets and  planets to orbit stars
Answers
Answer:Orbits are the result of a perfect balance between the forward motion of a body in space, such as a planet or moon, and the pull of gravity on it from another body in space, such as a large planet or star. An object with a lot of mass goes forward and wants to keep going forward; however, the gravity of another body in space pulls it in.
Explanation:
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Related Questions
Physics - Standing wave modes on a string - assignment
Answers
a)
When a standing wave propagates through a string, the length of the string is a multiple of half the wavelength:
\(L=n\cdot\frac{\lambda_n}{2}\)The factor n corresponds to the number of the harmonic. Then, the first harmonic is given by the condition n=1:
\(\begin{gathered} L=\frac{\lambda_1}{2} \\ \Rightarrow\lambda_1=2L \end{gathered}\)As we can see, the wavelength of the first harmonic is two times the length of the string.
Then, the wavelength of the first harmonic can be found by replacing the length L=63cm:
\(\lambda_1=2\times63cm=126cm\)b)
The product of the wavelength and the frequency is the speed of the wave:
\(v=\lambda f\)Replace λ=126cm=1.26m and f=330Hz to find the speed of the wave on the E-string:
\(v=(1.26m)(330Hz)=415.8\frac{m}{s}\approx416\frac{m}{s}\)c)
The frequency of the n-th harmonic is given by:
\(f_n=\frac{v}{\lambda_n}\)On the other hand:
\(\lambda_n=\frac{2L}{n}\)Then:
\(f_n=\frac{v}{2L}\times n\)Notice that v/2L is the frequency of the first harmonic (fundamental frequency). Then:
\(f_n=f_1\times n\)Replace the fundamental frequency of 330Hz and n=2,3,4 to find the second, third and fourth harmonic frequencies:
\(\begin{gathered} f_2=330Hz\times2=660Hz \\ f_3=330Hz\times3=990Hz \\ f_4=330Hz\times4=1320Hz \end{gathered}\)d)
Replace n=3 into the expression for the wavelength of the n-th harmonic to find the wavelength of the third harmonic:
\(\lambda_n=\frac{2L}{n}=\frac{2\times63cm}{3}=\frac{126cm}{3}=42cm\)Therefore, the answers are:
a) 126cm
b) 416m/s
c) 660Hz, 990Hz, 1320Hz
d) 42cm
Calculate the air pressure in the pressurized tank, if h1 = 0. 18 m, h2 = 0. 2m and h3 = 0. 25m. The density of the mercury, water and oil are 13,600 kg/m3,1000 kg/m3 and 850 kg/m3, respectively
Answers
The air pressure in the pressurized tank will be 24014.88 N/m²,196.2 N/m²,2084.625 N/m².
What is pressure?The force applied perpendicular to the surface of an item per unit area across which that force is spread is known as pressure.
It is denoted by P. The pressure relative to the ambient pressure is known as gauge pressure.
Pressure is found as the product of the density,acceleraton due to gravity and the height.
P₁=ρ₁gh₁
P₁=13,600 kg/m³×9.81 (m/s²)×0.18 m
P₁=24014.88 N/m²
P₂=ρ₂gh₂
P₂= 1000 kg/m³×9.81 (m/s²)×00.2 m
P₂=196.2 N/m²
P₃=ρ₃gh₃
P₃=850 kg/m³×9.81 (m/s²)×0.25
P₃=2084.625 N/m²
Hence,the air pressure in the pressurized tank will be 24014.88 N/m²,196.2 N/m²,2084.625 N/m².
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It’s IT but I really need the answer
Answers
The answer to the question is logic
which of the following has virtually no effect on the internal structure of a planet? group of answer choices its composition. its size. its mass. its magnetic field.
Answers
The factor that has virtually no effect on the internal structure of a planet is its magnetic field. The composition, size, and mass of a planet all play significant roles in determining its internal structure.
A magnetic field is a force field created by magnets or by the motion of electric charges. It is a region of space where a magnetic force can be detected and measured. The strength and direction of a magnetic field are determined by the arrangement of the magnetic materials that generate it. Magnetic fields are used in a variety of applications, from generating electricity in power plants to creating images in medical scanners. They are also important in understanding the behavior of charged particles in space, such as the Earth's magnetosphere. The concept of magnetic fields is fundamental to the study of electromagnetism and plays a critical role in modern technology.
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Mr. Davis is riding his bike at a speed of 5 meters per second for 3600 seconds how far did he ride?
Answers
Answer:18,000 meters
Explanation:3600x5=18,000.
3. What is the mass of a falling rock, accelerating at 9.8m/s²?? if it produces a force of 147N? PLEASE HELP!! I WILL GIVE BRAINLEST!!!<3
Answers
Answer:
15Explanation:
Formula
Force = mass × acceleration
147N =? × 9.8 ms2
M =
\( \frac{147 }{9.8} \)
M = 15
Double Check
15 X 9.8
147N
Hope this helps!
find the magnitude of the acceleration acm of the center of mass of the spherical shell. take the free-fall acceleration to be g
Answers
Take the free-fall acceleration to be gg = 9.80 m/s2m/s2.
In geometry, a round shell is a generalization of an annulus to three dimensions. it's far the area of a ball among concentric spheres of differing radii.
A round shell is an area among two concentric spheres of differing radii while a sphere is a spherical strong determine, or its floor, with every factor on its surface equidistant from its center. example: A stable cylinder of glass, the radius of whose base is 9cm and the peak is 12cm, is melted and changed into a sphere.
Something spherical is like a sphere in being round, or extra or less spherical, in 3 dimensions. Apples and oranges are both spherical, for example, despite the fact that they're in no way flawlessly round. A spheroid has a more or less spherical shape; so an asteroid, for instance, is regularly spherical, however lumpy.
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how far does the putty block system compress the spring
Answers
The spring compresses up to 0.046 m which is equal to 4.6 cm.
The given problem requires us to determine the extent to which the putty block system compresses the spring. Let’s start with a brief introduction to the Putty block system and the Spring. The Putty block system is a mass that is dropped from a height of h onto a spring. The spring is compressed by a distance x before coming to rest and then returns to its initial position. Spring is defined as a resilient device that can be compressed or extended by an applied force and can store energy in the process. The potential energy stored in a spring is equal to the product of half of the spring constant and the square of the displacement produced in it. The formula to calculate the amount of compression in the spring is given by; x = mgh / k
where; x = amount of compression in the spring
m = mass of the putty block system
g = acceleration due to gravity h = height from which the block was dropped
k = spring constant Substituting the values given,
we have; x = 0.34 x 9.81 x 0.15 / 37x = 0.046 m
The spring compresses up to 0.046 m which is equal to 4.6 cm.
The Putty block system is a simple experiment that helps understand the properties of a spring. The putty block system compresses the spring by 4.6 cm when the mass is dropped from a height of 15 cm. It is important to note that the extent to which the spring is compressed depends on the mass of the object dropped and the height from which it is dropped. Additionally, the amount of compression in the spring can be used to determine the spring constant.
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Ya'll I been thinking...
is cereal really just a type of soup?
Answers
Answer:
Your a genius!
Explanation:
Formation of a precipitate in a chemical reaction is considered a??
Answers
Answer: chemical change
Explanation: your answer for ck-12
The formation of a precipitate in a chemical reaction is considered a chemical change.
What is a Chemical reaction?A chemical reaction may be defined as a type of reaction that significantly involves a process that demonstrates the rearrangement of the molecular or ionic appearance of a substance, as distinct from an alteration in physical form or a nuclear reaction.
The formation of an insoluble compound will sometimes appear during a chemical reaction when a solution consisting of a particular cation is significantly mixed with another solution that consists of a specific anion.
This insoluble compound is known as a precipitate and will always form during a chemical reaction. The formation of this insoluble compound illustrates an example of chemical change.
Therefore, the formation of a precipitate in a chemical reaction is considered a chemical change.
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Which circuit is a series circuit
Answers
Answer:
The answer is A
Explanation:
Answer:
it is A)
Explanation:
it has multiple circuits.
if two successive overtones of a vibrating string are 320 hz and 400 hz , what is the frequency of the fundamental?
Answers
the frequency of the fundamental (first overtone) is 160 Hz.
The difference between the frequencies of two succeeding overtones can be used to determine the frequency of the fundamental (first overtone) of a vibrating string.
Let's use the letters f1 for the fundamental overtone's frequency and f2 and f3 for the overtones that follow.
F2 = 320 Hz, and F3 = 400 Hz, as we are aware.
The following gives the relationship between the fundamental's frequency and its overtones:
f2 = 2 * f1\sf3 = 3 * f1
Therefore, we may equalize the two equations:
320 Hz = 2 * f1
400 Hz = 3 * f1
by the matching overtone number in each equation:
320 Hz / 2 = f1
400 Hz / 3 = f1
Calculating f1:
320 Hz / 2 = 400 Hz / 3\s320 * 3 = 400 * 2\s960 = 800, giving 160Hz frequency.
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Amplitude measures
O the length of the wave
O the height of the wave
O how many waves past a certain point in a certain amount of time
O the distance the wave travels
Answers
Explanation:
the distance the wave travel
a 487-kg car moving at 19.5 m/s in the x direction hits from behind a second car moving at 9.0 m/s in the same direction. if the second car has a mass of 636 kg and a speed of 15.6 m/s right after the collision, what is the velocity of the first car after this sudden collision?
Answers
The velocity of the first car after the collision is approximately 11.84 m/s.
To determine the velocity of the first car after the collision, we can apply the principle of conservation of momentum. According to this principle, the total momentum before the collision is equal to the total momentum after the collision.
The momentum of an object is calculated as the product of its mass and velocity. Let's denote the velocity of the first car after the collision as v1.
Before the collision:
Momentum of the first car = mass of the first car * velocity of the first car
Momentum of the second car = mass of the second car * velocity of the second car
After the collision:
Total momentum = (mass of the first car + mass of the second car) * velocity of the first car (since they move together after collision)
Using the conservation of momentum, we can set up the equation:
(mass of the first car * velocity of the first car before) + (mass of the second car * velocity of the second car before) = (mass of the first car + mass of the second car) * velocity of the first car after
Substituting the given values:
(487 kg * 19.5 m/s) + (636 kg * 9.0 m/s) = (487 kg + 636 kg) * v1
Solving for v1:
(487 kg * 19.5 m/s) + (636 kg * 9.0 m/s) = (487 kg + 636 kg) * v1
v1 ≈ 11.84 m/s
Therefore, the velocity of the first car after the collision is approximately 11.84 m/s.
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50 POINTS!
Write a paragraph that answers the questions below:
If there is a situation that would require a person to use self defense, what offensive strategies would you recommend they use?
What defensive strategies would you recommend they use?
Based on the videos, which move(s) look most effective for offense if there is a situation that would need self defense?
Based on the videos, which move(s) look most effective for defense if there is a situation that would need self defense?
Answers
If a person is forced to utilize self-defense, the offensive techniques that should be recommended are as follows:
Take the initiative.I would advise them to employ the following defense strategies:
Keeping your head safeKeeping your elbow between you and the evil person.Based on the films, the move(s) that appear to be the most successful for the offense in a circumstance requiring self-defense are to target the problem rather than the person.
What is an offensive strategy?An aggressive competitive strategy is a form of company strategy that involves actively pursuing industry changes.
Companies that go on the offensive typically make acquisitions and invest extensively in R&D and technology in order to remain ahead of the competition.
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What happens to the air in an air pump when being pumped into a tire? What happens to the air when allowed to escape from a tire?
Answers
Seena and Jack disagree with each other's plan for the future. Instead of talking about it, they simply have not discussed it, and the reasons for their disagreement have never been communicated. Since their disagreement, they have not spoken much, which is strange because they were great friends. What might best explain this
Answers
Seena and Jack should have honest dialogues about their disagreements and feelings to repair their friendship. Effective communication and active attempts to understand and empathise can help them resolve their disagreements and repair their friendship.
After their argument regarding future plans, Seena and Jack's lack of communication and interaction is most likely due to unresolved conflict and avoidance of confrontation. The argument may have strained their bond.
Misunderstandings and animosity may have arisen from not discussing their different intentions and reasons for disagreement. The lack of open discussion and avoidance of the topic may have caused distance and discomfort, forcing both parties to withdraw and limit their interactions.
Avoiding the topic and decreasing communication may have been due to fear of confrontation, not wanting to damage each other's feelings, or avoiding disagreement. Unresolved conflict and poor communication may have destroyed their friendship.
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An object moves from point x to point y in 20 s, where the velocity at x = 50 km/h and
the velocity at y = 5. 56 m/s, so the acceleration of this object is.
Answers
The acceleration of this object is \(-8.33 m/s^2\) (negative acceleration means it is slowing down).
How to calculate the acceleration of an object?To calculate the acceleration of an object you can use the following formula:
a = (v_f - v_i) / t
where a is acceleration, v_f is final velocity, v_i is initial velocity, and t is time.
Velocity at x = 50 km/h and velocity at y = 5.56 m/s, and the time taken to move from point x to point y is 20 seconds, so plug these values into the formula to get the acceleration: can ask. :
a = (5.56 m/s - (50 km/h)*(1000 m/km)/(3600 s/h)) / 20 seconds
a = (5.56m/s - 13.89m/s) / 20s
a = -8.33m/s^2
So the acceleration of this object is -\(8.33 m/s^2\) (negative acceleration means it is slowing down).
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A student wants to use a simple machine to remove a bottle cap.
What is the best simple machine for this task?
a. inclined plane
b. pulley
c. lever
d. screw
Answers
Answer:
inclined plane
is the answer::::::)))
Answer:
d.
Explanation:
screw
An inclined plane wrapped around a cylinder or cone. a conmon use of the screw is to hold objects together, examples include a jar lid and wood screw. A compound machine is s combination of two or more simple machines
what insterment would you use to measure the force on the black
Answers
Answer:
A pair of scales
Explanation:
By plane , a trip to Disney world took 10hours over a distance of 815 km what is the average speed of the plane
Answers
Answer:
81.5
Explanation:
the total distance of 815km divided by total hours traveled 10hrs.
815 divided by 10 = 81.5
At 90°C. you dissolved 10 g of KCI in 100. g of water. Is this solution saturated or unsaturated?
A. saturated
B. unsaturated
Answers
Answer:
B. unsaturated
Explanation:
Which of the following statements is false? The magnetic field of a current-carrying wiredepends on the magnitude of the current. decreases inversely with the distance from the wire. is directed circularly around the wire. exists only if the current in the wire is changing.
Answers
The magnetic field produced by a conductor that is carrying current relies on the conductor's current and the point's distance from it. The magnetic field runs parallel to the wire in a perpendicular direction.
Given by r = 2 m and B = 5, the magnetic field strength created by a straight wire carrying current is 5. Inquiry 4: As seen in the diagram below, a straight conductor carrying a current of 10A is parallel to another conductor carrying a current of 5A on the other side. Since all closed-loop currents make their own magnetic fields and magnetic fields operating on closed-loop circuits may produce current, magnetism and electricity are closely related. Oersted made the discovery that electric current had a magnetic influence.
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rank the following speeds of mass movements from slowest to fastest: 1. Creep
2. Slump
3. Flow
4. Fall
Answers
Ranking the speeds of mass movements from slowest to fastest: 1. Creep, 2. Slump, 3. Flow, 4. Fall.
When ranking the speeds of mass movements from slowest to fastest, creep is the slowest. Creep refers to the gradual and slow movement of soil or rock particles downhill due to the force of gravity. Slump, the next in line, involves the movement of a coherent mass of soil or rock along a curved surface. Flow, which is faster than both creep and slump, occurs when the material moves as a fluid, typically involving a mixture of soil, water, and air. Fall is the fastest, where the material rapidly descends under the influence of gravity without significant deformation or internal movement.
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Which best explains why the receiver of a signal must understand the code or language being used
Answers
The receiver of a signal must understand the code or language being used to avoid confusion and losses.
What is a Signal?This is usually in the form of a sound or body movement and is involved in conveying messages to people.
The receiver must understand the code or language in order to prevent confusion or loss of lives and properties.
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+20 POINTS WILL GIVE BRANLIEST IF GOOD!!!!!HI EVERYONE!! PLS HELP!! Describe three machines that humans have designed and explain how the mechanical advantage is used.
Answers
Answer:
The medical Univision it helped the sick. The Xperia Logitech helped the prople that have no arms.Explanation:
what is the principle of charge quantisation?
Answers
Answer:
Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.
Explanation:
What is the kinetic energy of a 25 kg object moving at a velocity of 4 m/s?
Answers
Thus Kinetic energy of the object is 200J when mass is 25 kg and velocity is 4 m/s.
You are dating rocks by their proportions of parent isotope potassium-40 (half-life 1.25 billion years) and daughter isotope argon-40. Find the age for each of the following.A rock that contains seven times as much argon-40 as potassium-40.Express your answer using three significant figures.
Answers
The age of the rock is 3.512 billion years.
What are 3 types of rocks?
1. Igneous rocks
2. Sedimentary rocks
3. Metamorphic rocks
For the first rock, the number of potassium-40 atoms is equal to the number of argon-40 atoms. That can only happen when when one half life cycle has elapsed. Therefore the age of this rock is indeed 1.25×109 years. Now let us calculate the age of the second rock sample. Let us say that the number of potassium-40 at the beginning was N0 and the number of potassium-40 after a particular time t us N. There after 1.25 billion years, N= N0 /2. Now we know the decay constant. This means that every second,5.54×10-10 atoms of potassium-40 decay into argon-40. We can use this decay constant to calculate the time required for the number of argon-40 to be 7 times as much as potassium-40. We want the time required to get the condition N = N0/7. So the correct answer is 3.512 billion years.
Therefore, the age of the rock is 3.512 billion years.
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The age of the rock is approximately 42 million years, calculated using the equation (7/8) = (1 - \(e^{-kt}\) ) with k = ln(2)/1.25 billion years and solving for t.
What is the dating of rock?
The dating of rocks refers to the process of determining the age of rocks or geological events using various techniques, such as radiometric dating, relative dating, and stratigraphy. Radiometric dating involves measuring the ratio of parent and daughter isotopes in a rock, while relative dating involves determining the order of events in geological history. Stratigraphy involves analyzing the layers of sedimentary rocks to determine the relative age of the rocks and the events they represent. These techniques are used by geologists to study the history of the Earth and the processes that have shaped it over time.
The ratio of argon-40 to potassium-40 in a rock can be used to determine the age of the rock based on the half-life of potassium-40. The equation for the decay of potassium-40 to argon-40 is:
K-40 --> Ar-40 + e-
where e- represents an electron and a neutrino.
The half-life of potassium-40 is 1.25 billion years, which means that half of the original amount of potassium-40 will decay to argon-40 in 1.25 billion years. After another 1.25 billion years, half of the remaining potassium-40 will decay, and so on.
If a rock contains seven times as much argon-40 as potassium-40, that means the ratio of argon-40 to potassium-40 is 7:1. We can set up the following equation to solve for the age of the rock:
(7/8) = (1 - \(e^{-kt}\))
where k is the decay constant for potassium-40, t is the age of the rock, and e is the mathematical constant approximately equal to 2.71828.
The decay constant for potassium-40 can be calculated using the following formula:
k = ln(2)/t1/2
where ln represents the natural logarithm and t1/2 is the half-life of potassium-40.
Plugging in the values, we get:
k = ln(2)/1.25 billion years = 0.00055 \(years^{-1}\)
Substituting k into the first equation and solving for t, we get:
t = -ln(7/8)/0.00055 \(years^{-1}\) = 42 million years
Therefore, the age of the rock is approximately 42 million years.
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A boat heads directly eastward across a pier at 12 meters per second. If the current in the river is flowing
at 5.0 meters per second due south, what is the magnitude of the boat's resultant velocity
Answers
Answer: 13 m/s
Explanation: The two vectors form a 5-12-13 right triangle. the magnitude of their resultant is the hypotenuse, which is 13 m/s.
The magnitude of the boat's resultant velocity (V) is 13 meters per second.
The velocity (v₁) of the boat heading in the eastward direction is in +ve (x-direction).
The velocity (v₂) of the current flowing in the south direction is in -ve (y-direction).
The magnitude of the boat's resultant velocity (V) can be determined by using the Pythagoras' rule:
∴
V² = V₁² + V₂²
V² = (12 m/s)² + (-5.0 m/s)²
\(\mathbf{V = \sqrt{(12 m/s)^2 + (-5.0 m/s)^2}}\)
\(\mathbf{V = \sqrt{(144 m/s) + (25m/s)}}\)
\(\mathbf{V = \sqrt{(169 \ m/s) )}}\)
V = 13 m/s
Therefore, we can conclude that the magnitude of the boat's resultant velocity (V) is 13 meters per second.
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