Question 3 of 10
Which point on the standing wave is the result of the constructive
interference of two crests?
B
D
A. A
O O o
B. B
C. C
D. D
Answers
Answer:
It is option A
Explanation:
a p e x
Point A on the standing wave is the result of the constructive interference of two crests. The effect is the sum of the individual wave amplitudes at each site where more than one wave is present.
What is the interference of waves?The result of two or more wave trains flowing in opposite directions on a crossing or coinciding pathways. This phenomenon is known as the interference of waves.
When two wave pulses are traveling along a string toward each other. They meet, and the phenomenon is occurring, known as interference.
The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point known as crest.
Point A on the standing wave is the result of the constructive interference of two crests.
Hence, option A is correct.
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Related Questions
Question 8(Multiple Choice Worth 2 points)
(05.06 MC)
Jon is designing an experiment to see the effect of mechanical energy on the number of times a ball bounces. Why is it important that Jon keeps detailed records of his experiment?
The records will show how bouncy the ball is.
The evidence produced by his experiment should be replicable by others.
The evidence produced by the experiment will prove that he is a good scientist.
The records will prove that the mechanical energy of the ball will change with height
Answers
Answer:
D
Explanation:
The answer is d dont worry about the comment sorry
Who would benefit from using a topographic map? Check all that apply
Military
Hikers
Geologists
Submarine divers
Cross Country runners
Airplane Pilots
Answers
HELPPP PLEASE
1) if the distance between two masses are 15 meters and the masses are 350kg and 492 kg
respectively; what is the magnitude of gravitational force?
Answers
Answer:
-8
5.092×10
Explanation:
given,
distance (d) =15m
mass (M1) =350kg
mass(M2) = 492kg
Gravitational constant (G)=6.67×10^-11
we know,
gravitational force=(Gm1m2)÷d^2
=(6.67×10^-11×350×492)÷15^2
= (1.14857×10^-5)÷225
= 5.092×10^-8
Which conclusion has been made by the world’s major scientific bodies about climate change?
a.
The recent harsh winters have placed some doubt on projected atmospheric warming.
b.
Climate change is projected to slow down during the latter half of this century.
c.
The current climate change is caused primarily by natural processes.
d.
We do not know enough about how climate works to make any definite conclusions.
e.
Climate change is real and is happening now.
Answers
The conclusion made by the world's major scientific bodies about climate change is that it is real and is happening now.
So, the correct answer is E.
There is overwhelming evidence that human activities, such as burning fossil fuels and deforestation, are the primary cause of the current climate change. While some may point to recent harsh winters as evidence against climate change, this is actually a result of the destabilization of the polar vortex due to warming.
Scientific models project that climate change will continue to worsen if significant action is not taken to reduce greenhouse gas emissions. The consensus among the scientific community is clear: climate change is a major threat to our planet and urgent action is needed to mitigate its effects.
Hence , the answer of the question is E.
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True or False. Can Metalloids conduct electricity under certain conditions?
Answers
Answer:
Conduction: Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors. Luster: Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals).
Explanation:
The ____________ of any amount of a solid, liquid, or gas relative to its volume is called density.
Answers
Answer:
The mass of any amount of a solid, liquid, or gas relative to its volume is called density.
Answer: The mass of any amount of a solid, liquid, or gas relative to its volume is called density.
Helppppppp :((((((
:((((((
Answers
Answer:
b is the equivalent
do u want explanation
What is the minimum runway length that will serve? hint: you can solve this problem using ratios without having any additional information. express your answer in miles.
Answers
There are many factors that determine if an aircraft can operate from a given airport. Of course the availability of certain services, such as fuel, access to air stairs and maintenance are all necessary. But before considering anything else, one must determine if the plane can physically land at an airport, and equally as important, take off.
What is the minimum runway length that will serve?
Looking at aerial views of runways can lead some to the assumption that they are all uniform, big and appropriate for any plane to land. This couldn’t be further from the truth.
A given aircraft type has its own individual set of requirements in regards to these dimensions. The classic 150’ wide runway that can handle a wide-body plane for a large group charter flight isn’t a guarantee at every airport. Knowing the width of available runways is important for a variety of reasons including runway illusion and crosswind condition.
Runways also have different approach categories based on width, and have universal threshold markings that indicate the actual width.
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Protons, electrons, and neutrons make up atoms and atoms make up A: Substances B: Matter C: Molecules D: Solids
Answers
Answer:
I think it's matter
Explanation:
Because everything is made of matter
An artist makes necklaces. she packs each necklace in a small jewelry box that is1 3 4 inches by inches by inch.2 1 4 3 4 a department store ordered 270 necklaces. the artist plans to ship the necklaces to the department store using flat-rate shipping boxes from the post office. which of the flat-rate boxes should she use to minimize her shipping cost?
1. read the problem statement. what additional information will you need to solve this problem?
2. discuss this information with your group. make a plan for using this information to find the most inexpensive way to ship the jewelry boxes. once you have agreed on a plan, write down the main steps.
i need help now
Answers
To determine the most inexpensive way to ship the jewelry boxes, we need to know the dimensions and cost of the available flat-rate shipping boxes from the post office. Once we have this information, we can compare the cost of shipping 270 jewelry boxes using each of the available flat-rate shipping boxes and choose the one with the lowest cost.
Assuming we have this information, here is a plan for finding the most inexpensive way to ship the jewelry boxes:
1. List the available flat-rate shipping boxes from the post office along with their dimensions and cost.
2. Calculate the volume of each jewelry box by multiplying its dimensions (1 3/4 inches by 2 1/4 inches by 3/4 inch) to get 2.53125 cubic inches.
3. Calculate the total volume of the 270 jewelry boxes by multiplying the volume of one jewelry box by the number of boxes (2.53125 x 270 = 683.4375 cubic inches).
4. For each flat-rate shipping box, calculate the number of jewelry boxes that can fit inside by dividing the volume of the shipping box by the volume of one jewelry box.
5. Calculate the cost of shipping 270 jewelry boxes using each of the available flat-rate shipping boxes.
6. Choose the flat-rate shipping box with the lowest cost.
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A pressure washer uses a high-velocity jet of water to clean surfaces. Every second, 17.0kg of water is expelled at a velocity of 24.0m⋅s−1. What is the magnitude of the force from the water onto a surface? Assume that the water velocity is reduced to zero when it hits a surface. Give your answer in Newtons, correct to three significant figures, without a unit.
Answers
This question involves the concepts of Newton's Second Law of Motion and Momentum.
The magnitude of the force from the water onto the surface is "408".
According to
Newton's Second Law of Motion:\(F=\frac{\Delta P}{t}\)
where,
F = Force = ?ΔP = Change in Momentum = \(m(v_f-v_i)\) t = time interval = 1 sm = mass = 17 kgvf = final speed = 0 m/svi = initial speed = 24 m/sTherefore,
\(F=\frac{\Delta P}{t}=\frac{m(v_f-v_i)}{t}\\\\F=\frac{(17\ kg)(0\ m/s-24\ m/s)}{1\ s}\\\\F=-408 N\)
The negative sign shows reaction force.
F = 408
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50 POINTS!!
What is the velocity of the mass after the force has stopped acting? only have to do question 10 but use the graph about to help. thanks!
Answers
The velocity of the mass after the force has stopped acting is 14 m/s.
What is the velocity of an object?The velocity of an object is the speed at which the object is moving in a specified direction.
Momentum is related to velocity and mass by the formula:
Momentum = mass × velocityThe velocity of the mass after 8 seconds is first determined.
Area under force-time graph = change in linear momentumChange in linear momentum = (1/2 × 2 × 6) + (6 × 4) + (1/3 ×2 × 6) = 36 kgm/s
Initial momentum = 18 kg × 12 m/s = 216 kgm/s
Final momentum = 216 + 36 = 252 kgm/s
Final Velocity = final momentum/mass
Velocity = 252/18 = 14 m/s
After 8 seconds, the force stops acting.
Therefore, the velocity of the mass after the force has stopped acting is 14 m/s.
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An airplane needs to attain a speed of 480 feet per second in order to take off. If the airplane has a maximal acceleration of 12 feet per square second, how long (at a minimum) must the runway be in order to accommodate the airplane for takeoff
Answers
An airplane must attain a speed of 480 feet per second to take off. Given that the airplane has a maximal acceleration of 12 feet per square second, we need to find out the length of the runway. We can use the formula s = ut + 1/2at² where s is the distance, u is the initial velocity.
A is the acceleration and t is the time taken to travel the distance. To determine the minimum length of the runway, we need to find the time taken to attain the speed of 480 feet per second. The initial velocity is zero. Using the formula v = u + at where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken to attain the final velocity.
We have;480 = 0 + 12t=> t = 40s.Now we can determine the minimum length of the runway.s = ut + 1/2at²=> s = 0(40) + 1/2(12)(40)²=> s = 9600 feet,Therefore, the runway must be at least 9600 feet long to accommodate the airplane for takeoff. The above explanation has a total of 118 words.
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The demand for a necessity such as electricity tends to be: inelastic. vertical. unit elastic. D elastic.
Answers
The demand for a necessity such as electricity tends to be inelastic. Here's why:Inelastic demand is when changes in price don't affect the quantity demanded as much.
Necessities such as food, water, and electricity often have an inelastic demand, meaning that when the price of the product increases, the quantity demanded does not decrease as much.Explanation:For example, if the cost of electricity increased by 10%, a household might not be able to decrease its use of electricity as much, such as by 10%. The amount of electricity that a household uses might not be affected by price changes because it's a necessity.A vertical demand curve implies that a change in price results in no change in quantity demanded.
Unit elastic refers to a change in price that results in a proportional change in quantity demanded.D elastic refers to the degree of price sensitivity. Demand is said to be elastic when a price change causes a substantial change in demand.
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An increase in the atomic number____the atomic radius moving from
left to right across a period.
Answer here
Answers
Answer:
to
Explanation:
Record your model values in the table below
Answers
What is the method of charging called?
Answers
Question 1(Multiple Choice Worth 4 points)
(01.04 LC)
What best describes the temperature at which a solid turns into a liquid?
O Melting point
O Boiling point
O Electrical conductivity
O Thermal conductivity
Answers
Answer:
Its the first option
Melting point
Well we know that if we freeze something, it will turn into a solid right? If it was boiling point, it would be steam, so your answer would be Melting Point
Hope this helps you out!
A direct current of 3.0 A flows through a circuit consisting of a battery and a 6.0 A resistor. Calculate the potential difference across the resistor. a
Answers
Question :-
A Direct Current of 3.0 A flows through a Circuit consisting of a Battery and a 6.0 Ohm's Resistor. Calculate the Potential Difference across the Resistor .Answer :-
Potential Difference is 18 Volt's .Explanation :-
As per the provided information in the given question, we have been given that the Current of the Device is 3.0 Ampere . The Resistance is given as 6.0 Ohm's . And, we have been asked to calculate the Potential Difference .
As we know ,
V = I RWhere ,
V denotes to Potential DifferenceI denotes to CurrentR denotes to ResistanceTherefore , by Substituting the given values in the above Formula :-
\( \sf {\dag \: \: \: Potential \: Difference \: = \: Current \: \times \: Resistance} \)
\( \sf {\Longrightarrow \: \: \: \sf Potential \: Difference \: = \: 3.0 \: \times \: 6.0} \)
\( \sf {\Longrightarrow \: \: \: \sf Potential \: Difference \: = \: 3 \: \times \: 6} \)
\( \bf {\Longrightarrow \: \: \: \bf {Potential \: Difference \: = \: 18 \: }} \)
Hence :-
Potential Difference = 18 Volt's .\( \underline {\rule {210pt}{4pt}} \)
Additional Information :-
\( \Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} \)
\(\Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance} } \)
\(\Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } \)
\( \underline {\rule {210pt}{4pt}} \)
Note :-
Kindly Scroll the Screen from Right to Left for Better View .state the law of conservation of linear momentum using Newton's third law of deduce this
Answers
Answer:
Derivation of Conservation of Momentum
Applying Newton's third law, these two impulsive forces are equal and opposite i.e. is equal to the change in momentum of the first object. is equal to the change in momentum of the second object. This relation suggests that momentum is conserved during the collision.
Explanation:
Hope it helps!!!
Dave and Alex push on opposite ends of a car that has a mass of 875 kg. Dave pushes the car to the right with a force of 250 N, and Alex pushes to the
left with a force of 315 N. Assume there is no friction.
What is the net force on the car in the x-direction? Help meee please
Answers
The net force acting on the car is 65 N to the left
The net force acting on an object is simply defined as the resultant force acting on the object.
From the question given, we obtained the following data:
Force applied to the right (Fᵣ) = 250 NForce applied to the left (Fₗ) = 315 NNet force (Fₙ) =?The net force acting on the car can be obtained as follow:
Fₙ = Fₗ – Fᵣ
Fₙ = 315 – 250
Fₙ = 65 N to the leftTherefore, the net force acting on the car is 65 N to the left
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Since there is no friction, the net force on the car in the x - direction will be 65 Newtons
Given that Dave and Alex push on opposite ends of a car that has a mass of 875 kg.
Dave pushes the car to the right with a force of 250 N, which is positive direction and Alex pushes to the left with a force of 315 N which is negative direction. Since there is no friction, only the horizontal forces will be considered.
To calculate the net force on the car in the x-direction, we will find the difference between the two forces because of their directions are opposite to each other.
Net force = 315 - 250
Net force = 65 Newtons
Therefore, the net force on the car in the x - direction will be 65 Newtons
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The function s(t) represents the position of an object at firne t moving along a fine. Suppose s(3) = 147 and s(5) =191. Find the averago velocity of the object over the interval of fime [3.5] The average velocity aver the interval [3,5] is v _wv= (Simplify your answer)
Answers
The average velocity of the object over the interval of time [3.5] is v_ave= 22.
The given function is s(t) represents the position of an object at firne t moving along a fine. Suppose s(3) = 147 and s(5) =191.
Find the averago velocity of the object over the interval of fime [3.5].
We are required to find the average velocity over the interval [3, 5].
Here, a = 3, b = 5 and c = 3.5. We know that:
Average velocity `v_(ave)` over the interval `[a, b]` is given by:
v_(ave) = (s(b) - s(a))/(b - a)
Now substituting the values of a, b and s in the formula, we get;
v_(ave) = (s(5) - s(3))/(5 - 3)Or
v_(ave) = (191 - 147)/2
So, v_(ave) = 22 m/s
Hence, the average velocity of the object over the interval of time [3.5] is v_ave= 22.
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giving brainlist
fill in the blank
Gear trains balance and
I will report you if needed so don't make a stupid reply
Answers
Answer:
spin the weals on the train
Explanation:
A rocket sled accelerates forward from 10 m/s to 50 m/s in 2 seconds. What is the acceleration of the sled?
Answers
Answer:
Explanation:
Use kinematics equations
You have Vi=10m/s and Vf=50m/s and t=2s
Use equation Vf=Vo+at 50=10+a(2)
50=10+2a
40=2a
a=20 m/s^2
For the circuit shown in the figure, the current in the 8 resistor is 0.50 A, and all quantities are accurate to 2 significant figures. What is the current in the 2 resistor?
Answers
The current through the 2Ω resistor is 9.5A
The terminal voltage is 10.8 V
How to calculatea) The voltage V across 8 Ω resistor is V = I*R = 8*0.5 = 4V
the current through 16Ω resistor is then I = V/R = 4/16 = 0.25 A
the current through 20Ω resistor is then I = current through 8Ω resistor + current through 16Ω resistor = 0.75 A
voltage across 20Ω is V = I*R = 0.75*20 = 15 V
the source voltage is Vs = V8 + V20 = 4+15 = 19 V
therefore the current through 2Ω resistor is
I = V/R = 19/2 = 9.5 A
b) The terminal voltage is
Vterminal = VR = I*R = 0.450*24 = 10.8 V
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There is a small hole of radius r in a hollow sphere, which is immersed in a liquid. Upto what maximum depth it can be immersed so that liquid may not enter in it? Density of liquid is d and surface tension is T.
Answers
Answer:
h = 4T/dgr
Explanation:
Using Laplace law for spherical bubble, the pressure difference P'- P = 4T/r where T = surface tension and r = radius of sphere.
Now, the pressure difference on the hollow sphere P' - P = dgh where d = density of liquid, g = acceleration due to gravity and h = maximum depth to which sphere must be immersed.
So dgh = 4T/r
h = 4T/dgr
A box of mass m is pushed at an angle 0 by a force Fp along a frictionless surface. The box travels to right with acceleration a. What is the mass of the box?
Answers
Answer:
m = FpCos0 / a
Explanation:
it just is
A box of mass m is pulled at an angle θ by a force Fp along a frictionless surface. The box travels to the right with acceleration a
What is the mass m of the box?
Answer: m = FpCos0/a
Calculate the power required of a 1400kg car under the following circumstances a) The car climbs a 10° hill at a steady 80km/h and b) The car accelerates from 90 to 110km/h in 6.0s to pass another car on a level road. Assume the force of friction on the car is 700N in both parts of the problem.
Answers
(a) The power required for the car to climb the hill at steady speed is 15,555.56 W.
(b) The power required for the car to climb the hill at a changing speed is 19,444.44 W.
What is the power required?
The power required for the car the move the incline is calculated as follows;
When the speed is steady, the average speed is calculated as;
v = ( 80km/h + 80 km/h) / 2 = 80 km/h = 22.22 m/s
P = Fv
where;
F is the applied forcev is average speedP = ( 700 N x 22.22 m/s )
P = 15,555.56 W
When the speed changes from 90 km/h to 110 km/h, the average speed is calculated as;
v = ( 90 km/h + 110 km/h ) / 2 = 100 km/h = 27.78 m/s
P = ( 700 N x 27,78 m/s )
P = 19,444.44 W
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The pressure of air is the force exerted by the atmosphere on a surface. Gravity pulls the gases of the atmosphere toward Earth. Atmospheric pressure is the force--exerted in all directions-by the weight of these gas molecules on a unit area of Earth's surface.
Many factors influence air pressure. The pressure, density, and temperature of the air are all closely interrelated. If one factor changes, the other two also tend to change. We can, however, make a few generalizations about the kinds of conditions that tend to produce either high or low pressure near the surface.
The following are generalizations and not absolute laws. In practice, however, most surface pressure cells can be explained by the dominance of one of these four conditions.
1. Ascending (rising) air tends to produce low pressure near the surface. Lows caused by strongly rising air are sometimes called dynamic lows.
2. Warm surface conditions can produce low pressure near the surface. Lows caused by warm surface conditions are sometimes called thermal lows.
3. Descending (subsiding) air tends to produce high pressure near the surface. Highs produced by strongly descending air are sometimes called dynamic highs.
4. Cold surface conditions can produce high pressure near the surface. Highs produced by cold surface conditions are sometimes called thermal highs.
Measuring Air Pressure
There are several measurement systems used to describe air pressure. Although most television and newspaper weather reports use inches of mercury (the height of a column of mercury in a liquid barometer), the most common unit of pressure measurement used in meteorology in the United States is the millibar. The millibar (mb) is a measure of force per unit area. The definition of 1 millibar is the force of 1000 dynes per square centimeter (1 dyne is the force required to accelerate 1 gram f mass 1 centimeter per second per second). In some countries air pressure is described with the pascal (Pa; 1 Pa = 1 newton/m2 [1 newton is the force required to accelerate a 1 kg mass 1 meter per second per second]) or the kilopascal (kPa; 1 kPa = 10 mb).
For comparison, the average sea-level pressure is 29.92 inches of mercury, which is equivalent to 1013.25 mb. We are generally interested in relative differences in pressure. For example, at the surface, 1032 mb would usually represent relatively high pressure, whereas 984 mb would represent relatively low pressure (equivalent to 30.47 inches and 29.06 inches of mercury, respectively).
In meteorology, we think of atmospheric pressure as the weight of the atmosphere exerted on a surface.
In English/Imperial measurements, this comes out to:
1 atmosphere = 14.6 pounds per square inch = 14.6 lbs/in2 = 14.6 psi
In the Metric systems this is:
1 atmosphere = 1.03 kg/cm2
But millibars are more often used in meteorology.
1 atmosphere ≈ 1 bar = 1000 millibars = 1000 mb
1 bar = 100 kilopascal = 100 kPa
= 1000 hectopascal = 1000 hPa
Therefore:
1000 mb = 1000 hPa
and millibar and hectopascal can be used interchangeably.
And so, the average atmospheric pressure at sea level is approximately:
1013 hPa = 1013 mb = 760 mm Hg = 29.92" Hg = 14.6 psi
To convert hPa or mb to millimeters of Hg (Mercury) :
hPa/33.86389
mb/33.86389. How would you best describe the relationship of altitude and barometric pressure? the higher the altitude, the higher the pressure none of these they are functionally independent variables as altitude increases, pressure decreases Question 11 Denver, 00 Hilo, Hawaii Lima, Peru London, U.K. Death Valley, CA Question 12 Vladivostok, Russia Salt Lake City, UT Mexico City, Mexico Fairbanks, AK Question 13 What number would you multiply inches of Hg by in order to convert it to hPa? Do not round
Answers
The inches of Hg are multiplied by 33.86389
The barometric pressure decreases with an increase in altitude. The higher the altitude, the lower the air pressure because the atmospheric layers above are not present to exert force upon the surface as you go higher in altitude, according to the given passage.
Altitude and barometric pressure are inversely related to each other. As the altitude increases, the barometric pressure decreases because there are fewer air molecules to exert pressure on objects at higher altitudes.
To convert inches of Hg to hPa, the following formula is used:
hPa = inches of Hg x 33.86389
Therefore, to convert inches of Hg to hPa, the inches of Hg are multiplied by 33.86389.
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When the atmosphere is absolutely unstable, the environmental lapse rate is ________ the dry adiabatic lapse rate.
Answers
Answer: greater than
Explanation: