Answers
Answer:
D.
Explanation:
It is the most compact and has the most waves in a given spot. The higher the frequency the higher the pitch so d is the answer
Related Questions
HEY CAN ANYONE ANSWER DIS RQ PLS!!!!!
Answers
Answer: all of the above and yes
hope thsi helps
Answer:
Hey!
Your first answer is ALL OF THE ABOVE!
Your second answer is YES!
I HOPE THIS HELPED YOU!
a toroid with an inner radius of 21.1 cm and an outer radius of 28.0 cm is tightly wound with one layer of wire that has a diameter of 0.221 mm. how many turns are there on the toroid?
Answers
There are approximately 625 turns on the toroid.
How to calculate the length of one turn?The length of the wire in one turn can be calculated using the formula for the circumference of a circle:
C = 2πr
Given that the diameter of the wire is 0.221 mm, the radius of the wire (assuming it is a circular cross-section) would be half of that:
r(wire) = 0.221 mm / 2
= 0.1105 mm
= 0.01105 cm
The length of wire in one turn is then:
L(turn) = 2πr(wire)
The total length of wire required for one turn of the toroid is equal to the circumference of the toroid's path, which can be calculated as the difference between the outer and inner circumferences:
L(total) = 2πR(outer) - 2πR(inner)
Substituting the given values:
L(total) = 2π(28.0 cm - 21.1 cm)
Now, we can find the number of turns by dividing the total length of the wire by the length of the wire in one turn:
Number of turns = L(total) / L(turn)
Calculating the values:
L(total) = 2π(28.0 cm - 21.1 cm)
= 2π(6.9 cm)
= 43.33 cm
L(turn) = 2π(0.01105 cm)
= 0.06937 cm
Number of turns = 43.33 cm / 0.06937 cm
= 624.62
Therefore, there are approximately 625 turns on the toroid.
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a tuck at rest starts to move and accelerated by 4m/s in 25 secondd. what is the velocity of the truck at the end offf the time?
Answers
Explanation; 4x25
Which energy source was developed through the invention of the atomic bomb?
Answers
Answer:
Nuclear energy
Explanation:
nuclear reactions harness the power of ________, a process where the nuclei of atoms are split to release energy.
Answers
Nuclear reaction harness the power of nuclear fission, a process where the nuclei of atoms are split to release energy.
The nucleus of an atom undergoes changes during nuclear reaction, which are characterised by the release or absorption of large amounts of energy. Nuclear fusion and nuclear fission are the two basic categories that can be used to group them.
A heavy nucleus, such uranium-235, separates into two smaller nuclei during nuclear fission, releasing energy and emitting neutrons as a result. Atomic bombs and nuclear power reactors are both built using this technology.
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A car driving down the road runs out of gasoline. Which of Newton’s laws explains why the car continues to move without gasoline?
Answers
Answer:
because the car needs gas so why wouldnt it stop working
Explanation:
What is the answer for the first part of a? In kN
Answers
We are asked to determine the magnitude of the force that acts parallel to the nail. To do that we will add the torque that acts on the point of contact. First, we draw a free-body diagram of the situation:
We have decomposed the force of the nail into its horizontal and vertical components. The horizontal component does no torque since there is no distance parallel to the force to the point of contact.
Now, we add the torques. We consider counterclockwise as positive:
\(\Sigma T=-(30cm)F+(5cm)(R_y)\)Since we consider the moment before there is no angular acceleration the sum of torques adds up to zero:
\(-(30cm)F+(5cm)(R_y)=0\)Now, we determine the value of Ry as a function of "R" using the trigonometric function cosine:
\(\cos \theta=\frac{R_y}{R}\)Now, we multiply both sides by "R":
\(R\cos \theta=R_y\)Now, we substitute in the sum of torques:
\(-(30cm)F+(5cm)(R\cos \theta_{})=0\)Now, we solve for "R". First, we add "30F" to both sides:
\((5cm)(R\cos \theta)=(30cm)F\)Now, we divide both sides by 5cm:
\((R\cos \theta)=\frac{(30cm)F}{5cm}\)Now, we divide both sides by cosine:
\(R=\frac{(30cm)F}{5cm\cos \theta}\)Now, we substitute the values:
\(R=\frac{(30cm)(155N)}{(5cm)\cos 26.9}\)Solving the operations:
\(R=1042.8N\)Therefore, the force on the nail is 1042.8 Newtons.
i really need help! please hurry and answer this. i'll give you 5 stars and everything just please answer this as fast as you can.
Answers
Answer:
Triple, double, single
Explanation:
They are all the same type of elemental bond, therefore the more of the same bond, you can only assume it would get stronger.
which location will have a higher relative humidity? how can you tell?
Answers
A location near a body of water, such as a lake or ocean, will generally have a higher relative humidity.
This is because bodies of water evaporate, releasing water vapor into the surrounding air. The amount of water vapor that air can hold increases with temperature, so warm air near the water can hold more moisture than cooler air further inland. As the warm, moist air moves inland and cools, it reaches its dew point, causing the excess water vapor to condense into liquid droplets, forming fog or dew.
Additionally, locations with high levels of precipitation, such as rainforests or areas with frequent thunderstorms, can also have high relative humidity due to the amount of moisture in the air. The relative humidity can be measured using a device called a hygrometer, which compares the amount of moisture in the air to the maximum amount it could hold at that temperature. A relative humidity of 100% means the air is saturated with water vapor, while lower percentages indicate drier air.
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HELP ME! PLEASE! SOMEONE! THIS QUESTION IS VERY HARD! THERE ARE 3 ANSWERS! HELP ME PLEASE! MAKE SURE TO EXPALIN
Question:
The teacher told Fatima that all types of energy are kinetic energy, potential energy, or both. Fatima drew this diagram to help her organize this information. She then sorted each type of energy into its correct category: chemical, electrical, electromagnetic, mechanical, nuclear, and thermal.
Three of the types of energy can be either kinetic or potential energy. Identify these three types. For each type, explain why it can be either kinetic or potential.
Answers
Answer:
search up the kinetic energy and potential energy etc. then take them and look at the characteristica are they the same? What makes them similar? Why are they different ? How? Then add the chemical nuclear and electrical changes it creates. Now the rest! There you’ve got this! If you need support I’m here! Hope this helped!
Explanation:
Lichens are not single organisms, but algae and fungi that function together. The algae use photosynthesis to make food for both organisms. The fungi produce digestive chemicals and absorb nutrients for both organisms.
How does the biological activity of lichens cause weathering in rocks?
Answer options with 4 options
A.
Lichens cause friction as they grow, which weathers the rocks.
B.
Lichens produce chemicals, which dissolve and weather the rocks.
C.
Lichens take in water, which freezes in cracks and weathers the rocks.
D.
Lichens absorb heat during photosynthesis, which weathers the rocks.
Answer please
Answers
Answer:
The correct answer is B
Lichens produce chemicals which dissolve and weather the rocks.
BRAINLIEST! PLEASE HELP :) Distinguish between constructive and destructive interference. Explain.
Answers
Answer:
Here's what I get
Explanation:
When two waves meet, they interfere with each other.
1. Constructive interference
If the crests of the waves happen to line up, as in Fig. 1, the amplitudes add up.
The crests become twice as high. The troughs also line up, so they become twice as deep.
We call this constructive interference.
2. Destructive interference
If the trough of one wave meets the crest of another, as in Fig. 2, the opposite happens.
The trough of one wave subtracts from the crest of the other, so the two waves cancel.
We call this effect destructive interference.
In Alaska, salmon feed on tiny plants called phytoplankton. During late summer, salmon gather in rivers to reproduce. Grizzly bears visit these rivers to feed on the large number of salmon. Phytoplankton are . Both the salmon and the grizzly bears are . Grizzly bears are .
Answers
Answer:
-->Phytoplankton are AUTOTROPHS
--> Both the Salmon and the grizzly bears are CONSUMERS.
--> Grizzly bears are SECONDARY CONSUMERS.
Explanation:
In an ecosystem, which is the basic functioning unit of nature, the biotic components is made up of all the living organisms in it. These organisms are divided into two main groups which includes:
--> The AUTOTROPHS: These are organisms that are able to use sunlight or chemical energy to manufacture their own food from simple inorganic substances. Since Autotrophs are the only organisms that can produce food in an ecosystem, they are also known as PRIMARY PRODUCERS. Example of autotrophs includes Phytoplankton( all green plants).
-->HETEROTROPHS: These organisms cannot manufacture their own food rather they feed on ready-made food which comes from the tissues of organisms in their environment. In an ecosystem, Heterotrophs are known as the CONSUMERS. Example of Heterotrophs includes all animals (salmon and the grizzly bears).
These biotic components of the ecosystem forms a feeding pathway through which energy and nutrients are transferred step by step among organisms. This is called a FOOD CHAIN. This feeding pathway follows a certain pattern:
--> it begins with a primary producer (Phytoplankton)
--> the primary producer is eaten by a primary consumer (salmon)
--> the primary consumer is eaten by a secondary consumer (grizzly bears)
That is the reason both the Salmon and the grizzly bears are CONSUMERS but while salmon is a primary consumer, grizzly bears are SECONDARY consumers.
Answer:
correct answer below
Explanation:
When an object is moving towards us the waves compresses in a way that it has
Answers
Answer: The waves are compressed as the item moves closer to you, so their wavelength is shorter.
Explanation:
Solve problem 2, answer C is not correct.
Answers
Answer:
A 220 N
Explanation:
it’s the only one not marked out on the photo. Hope this helps!
What is the new orbital speed after friction from the earth's upper atmosphere has done −7. 5×109J of work on the satellite?
Answers
The new orbital speed after friction from the earth's upper atmosphere is 8674.15 m/s.
When the work done by a force does not depend on the choice of path, the force is called the conservative force. Some examples are a gravitational force, elastic spring force and electric force. On the other hand, when the work done by a force relies on the choice of the path of the motion, it is called non-conservative force.
The net work done by non-conservative force is W = ΔK + ΔP ----(1)
Given that, work done W = -7.5 * 10⁹ J
Change in kinetic energy = (Kf - Ki)
Final kinetic energy Kf = 1/2* m * Vf²
Initial kinetic energy Ki = 1/2* m * Vi²
Mass of the satellite m = 848 kg
Vf = Final speed
Vi = Initial speed = 9640 m/s
Change in gravitational potential energy ΔP = 0
Substituting the values in (1),
1/2* m (Vf² - Vi²) = W
1/2 * 848( Vf² -9640²) = W
Making Vf as subject,
Vf = √( 2W/m + Vi²)
⇒ √( -2* 7.5 * 10⁹/848 + 9640²)
⇒ 8674.15 m/s
Thus, the final speed decreases due to friction.
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The kinetic energy KE of an object of mass m moving with velocity v is defined as KE = = 2 mv². If a force f(x) acts on the object, moving it along the x-axis from x₁ to x2, the Work-Energy Theorem states that the net work done is equal to the change in kinetic energy: mv₂2-1mv2, where v₁ is the velocity at x and v₂ is the velocity at x2.
Suppose that when launching an 800-kg roller coaster car an electromagnetic propulsion system exerts a force of 5.7x2+ 1.5x newtons on the car at a distance x meters along the track. Use the Work-Energy Theorem to find the speed of the car when it has traveled 50 meters. (Round your answer to two decimal places.)
X m/s
Answers
To find the speed of the car when it has traveled 50 meters, we need to use the Work-Energy Theorem and equate the net work done to the change in kinetic energy.
The net work done (W_net) is given by integrating the force (f(x)) over the displacement (x₁ to x₂):
W_net = ∫[x₁ to x₂] f(x) dxIn this case, the force acting on the car is given by f(x) = 5.7x² + 1.5x.
The change in kinetic energy (∆KE) is given by:
∆KE = KE₂ - KE₁Since the car starts from rest (v₁ = 0), the initial kinetic energy (KE₁) is 0.
Using the formula for kinetic energy KE = 1/2 mv², we can express the final kinetic energy (KE₂) in terms of the car's mass (m) and its final velocity (v₂):
KE₂ = 1/2 mv₂²According to the Work-Energy Theorem, W_net = ∆KE. Therefore, we can write:
∫[x₁ to x₂] f(x) dx = 1/2 mv₂²Substituting the given force expression into the integral:
∫[x₁ to x₂] (5.7x² + 1.5x) dx = 1/2 mv₂²Now we can solve this equation to find the velocity v₂. However, the problem statement does not provide the values of x₁ and x₂, which are necessary to evaluate the integral and determine the velocity. Without those values, we cannot proceed with the calculation.
If you have the values of x₁ and x₂, please provide them, and I'll be happy to assist you further in finding the speed of the car when it has traveled 50 meters.
About Kinetic energyKinetic energy or energy of motion is the energy possessed by an object due to its motion. The kinetic energy of an object is defined as the work required to move an object with a certain mass from rest to a certain speed.
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Does a soccer ball on the ground have energy
Answers
Answer:
No
Explanation:
The ball dose not have any kinetic energy or potential. Nothing is in motion or stored.
A 873-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 35.0 m/s. What is the average force exerted on the car during this time?_____ kN eastward
Answers
Given:
The mass of the car is: m = 873 kg
The initial speed of the car is: vi = 0 m/s (as initially, the car is at rest)
The final speed of the car is: vf = 35 m/s
The time over which the speed of car increases is: t = 5 s
To find:
The force exerted on the car.
Explanation:
The acceleration of the car can be calculated by using the following equation.
\(a=\frac{v_f-v_i}{t}\)Here, a is the acceleration of the car.
Substituting the values in the above equation, we get:
\(\begin{gathered} a=\frac{35\text{ m/s}-0\text{ m/s}}{5\text{ s}} \\ \\ a=\frac{35\text{ m/s}}{5\text{ s}} \\ \\ a=7\text{ m/s}^2 \end{gathered}\)The acceleration of the car is 7 m/s² in an eastward direction.
Now, using Newton's second law of motion, the force exerted on the car can be calculated as:
\(F=ma\)Substituting the values in the above equation, we get:
\(\begin{gathered} F=873\text{ kg}\times7\text{ m/s}^2 \\ \\ F=6111\text{ N} \\ \\ F=6111\times\frac{\text{ kN}}{10^3} \\ \\ F=6.111\text{ kN} \end{gathered}\)The force exerted on the car is 6.111 kN. The direction of force is the same as the direction of the car. Thus, the direction of the force is in an eastward direction.
Final answer:
The force exerted on the car is 6.111 Kilo-Newtons (kN) eastward.
A plane travels at +390 km/h for 5 hours, and then at –450 km/h for 4 hours. Which of the following are true?
Answers
Answer:
Three thousand seven hundred fifty hours
The average velocity of the plane during the total time is 16.7 km/hr.
The initial velocity of the plane, v₁ = 390 km/hr
The time taken for this travel, t₁ = 5 hours
The final velocity of the plane, v₂ = -450 km/h
The time taken for this travel, t₂ = 4 hours
The initial displacement of the plane, d₁ = v₁ x t₁
d₁ = 390 x 5
d₁ = 1950 km
The final displacement of the plane, d₂ = v₂ x t₂
d₂ = -450 x 4
d₂ = -1800 km
The average velocity of an object is the constant velocity that, over a certain amount of time, would produce the same resultant displacement as a variable velocity in the same time frame of reference.
The average velocity of the plane during the total time is given by,
Average velocity = total displacement/total time
v = (d₁ + d₂)/(t₁ + t₂)
v = (1950 + -1800)/(5 + 4)
v = 150/9
v = 16.7 km/hr
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Your question was incomplete, but most probably your question would be:
A plane travels at +390 km/h for 5 hours, and then at -450 km/h for 4 hours. What is the plane's average velocity over the 9 hours of the flight?
Hannah is driving a car up a hill. She observes that the car tends to slow down if she does not press down on the accelerator. Hannah suggests that friction between the car and the road is causing the car to slow down. Which best explains why Hannah’s suggestion is not a scientific theory?
Group of answer choices
Hannah’s suggestion is not a well-supported and widely accepted explanation
Hannah is not a well-paid scientist
Hannah’s suggestion is a claim that has been well tested.
Hannah’s suggestion is a good idea held by an individual and based on a life experience.
Answers
Answer:
C. is correct.
Explanation:
Hope this helps :)
The suggestion given by Hannah is not a well-supported and widely accepted explanation. So, option A is correct.
What is friction?Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion. Automobile engines use about 20% of their output to overcome frictional forces in moving parts.
The adhesion forces between the contact zones of the surfaces, which are always microscopically uneven, appear to be the primary cause of friction between metals. Shearing these "welded" joints and the action of the tougher surface's imperfections scrubbing against the softer surface cause friction.
According to the question, Hannah is driving the car up a hill and when she is not pressing the accelerator the car slows down. The reason behind this is that there is an ascent of height that the car has to climb with its engine power and if the accelerator is not applied to it then it will start to slow down also friction is a factor that is involved in this case.
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I am struggling with the question below, pls help: What is the distance between the moon and the earth if the mass of the moon is 7.34 x 10²² kg and the force of attraction between the two is 2.00 x 10 ^ 20.
Thank you in advance!
Answers
Answer:
Explanation:
What you forgot to include is the mass of the earth, which is 5.98 × 10²⁴ kg. NOW we can do the problem:
\(F=\frac{Gm_1m_2}{r^2}\) where m1 and m2 are the masses of the objects experiencing this force of gravity, F. G is the universal gravitational constant. Filling in:
\(2.00*10^{20}=\frac{(6.67*10^{-11})(7.34*10^{22})(5.98*10^{24})}{r^2}\)
We are going to rearrange and solve for r before we do any math on this thing:
\(r=\sqrt{\frac{(6.67*10^{-11})(7.34*10^{22})(5.98*10^{24})}{2.00*10^{20}} }\) and when we plug all that mess into our calculators we will do it just like that and then round to 3 significant digits at the very end.
Doing all of that gives us that
r = 3.83 × 10⁸ m
A car moves along a straight path with a speed of 30kmh. How much distance will the car travel in 20 minutes
Answers
Answer:
\(speed \: = \frac{distance}{time} \\ speed \times time = distance \\ 8.3ms^{ - 1} \times 1200s \\ 9960m\)
30km/h = 8.3ms^-1
20min = 1200s
If a car moves along a straight path with a speed of 30 kilometers per hour then it would cover a distance of 10 kilometers in 20 minutes.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.
As given in the problem If a car moves along a straight path with a speed of 30 kilometers per hour then we have to find how much distance will the car travel in 20 minutes
the distance covered in 1 hour = 30 kilometers
the distance covered in 60 minutes = 30 kilometers
the distance covered in 1 minute = 30/60 kilometers
the distance covered in 20 minutes = 20 ×30/60 kilometers
= 10 kilometers
Thus, the car would cover a distance of 10 km in 20 minutes.
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What is the distance between two spheres (20 kg and 30 kg) attracted by a force of 2 x 10^-5 Newtons.
Answers
what is a scientific model in short words
Answers
Answer:A scientific model is a physical and/or mathematical and/or conceptual representation of a system of ideas, events or processes. Scientists seek to identify and understand patterns in our world by drawing on their scientific knowledge to offer explanations that enable the patterns to be predicted.
Explanation: got right
Answer:
A scientific model is a physical and/or mathematical and/or conceptual representation of a system of ideas, events or processes. Scientists seek to identify and understand patterns in our world by drawing on their scientific knowledge to offer explanations that enable the patterns to be predicted.
Two identical waves are destructively interfere. What will happen to the resulting wave?
There will be no wave. ,
It will be half as large as each original wave.
The two waves will pass through each other without problem. ,
It will be twice as large as each original wave.
Answers
Answer:
Because the disturbances are in opposite directions for this superposition, the resulting amplitude is zero for pure destructive interference
Explanation:
Which of the following is NOT an argument for Cygnus X-1's being a true black hole?
a. Cygnus X-1's mass is estimated to be about 10 solar masses. ob
b. Spectroscopic data suggests hot gas is flowing from the companion B star onto Cygnus X.1.
c. X-ray observations around the object support a temperature of several million
d. X-rays from Cygnus X-1 vary on time scales as short as a millisecond
e. The mass of the visible B star is even greater than Cygnus X-1, at around 25 solar masses
Answers
The statement that is NOT an argument for Cygnus X-1's being a true black hole is d. X-rays from Cygnus X-1 vary on time scales as short as a millisecond.
What is a black hole?
A black hole is a celestial body that results from the death of a massive star. The black hole's gravitational pull is so strong that it prevents anything from escaping it, including light. As a result, black holes are invisible and can only be detected by the effects of their gravitational pull on other objects.
What is Cygnus X-1?
Cygnus X-1 is a binary star system located approximately 6,000 light-years away in the constellation Cygnus. The system contains a massive blue super giant star and a compact object that is believed to be a black hole, which orbits each other.
Cygnus X-1 was the first black hole discovered.The following are some arguments for Cygnus X-1's being a true black hole:
a. Cygnus X-1's mass is estimated to be about 10 solar masses
.b. Spectroscopic data suggests hot gas is flowing from the companion B star onto Cygnus X.1.
c. X-ray observations around the object support a temperature of several million . Among the options given in the question, d. X-rays from Cygnus X-1 vary on time scales as short as a millisecond is NOT an argument for Cygnus X-1's being a true black hole.
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1. A car starts from the rest on a circular track with a radius of 300 m. It accelerates with a constant tangential acceleration of a = 0.75 m/s?. Determine the distance traveled and the time elapsed"
Answers
Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.
To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.
The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).
Using the equation:
v = v₀ + at
where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:
v = 0 + (0.75 m/s²) * t
v = 0.75t m/s
The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:
v = ωr
Substituting the values:
0.75t = ω * 300
Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:
ω = ω₀ + αt
ω = 0 + (0.75 m/s²) * t
ω = 0.75t rad/s
We can now substitute the value of ω into the equation:
0.75t = (0.75t) * 300
Simplifying the equation gives:
0.75t = 225t
t = 0.75 seconds
The time elapsed is 0.75 seconds.
To calculate the distance traveled (s), we can use the equation:
s = v₀t + (1/2)at²
Since the initial velocity (v₀) is zero, the equation becomes:
s = (1/2)at²
s = (1/2)(0.75 m/s²)(0.75 s)²
s = (1/2)(0.75 m/s²)(0.5625 s²)
s = 0.2119 meters or approximately 21.19 centimeters
Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.
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The student knows that the speed of the waves can be measured by two different methods: direct timing measuring frequency. Compare and contrast these two methods. Your answer should include any apparatus the student needs and an explanation of which method is likely to produce more accurate results.
Answers
Direct timing is a continuous observation task using the timekeeping device to record the time in order to measure the speed of the waves. The speed of the wave can be measured by measuring the frequency of the wave using a wavemeter.
What is the frequency?The frequency of the wave can be defined as the number of oscillations in one second. The frequency's S.I. units can be represented as per second (s⁻¹) or hertz.
The relationship between frequency (ν), wavelength (λ), and speed of light (c) are:
V = νλ
Wavemeter can be defined as a device for determining the distance between successive wavefronts of equal phases along a wave. The determination is commonly made indirectly, by measuring the frequency of the wave. The wavemeter gives high accuracy because the frequency of the reference laser and the speed of light are known precisely.
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The urban legend of the car thief is an example of what theme?
Societal Change
A Common Fear
A Cautionary Tale
A Prank
Answers
The urban legend of the car thief is an example of A Cautionary Tale.
What is the Cautionary Tale?A cautionary tale makes reference to a given tale aimed at the warning the person of some type of danger, which is generally used to alert about a given behavior and may be very useful to modify a behavior pattern in children.
Therefore, with this data, we can see that A cautionary tale is based on warning and can help to modify certain behavior in c children depending on the ability to create conscious.
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