In order to answer the question about how far a sound wave moves before the microphone first detects a minimum in the sound intensity, we need to use the formula for sound intensity and the properties of sound waves. The sound intensity formula is given by: I = P / A .
where I is the sound intensity, P is the sound power, and A is the area through which the sound wave is passing. The properties of sound waves include wavelength, frequency, and velocity. The distance traveled by a sound wave before the microphone first detects a minimum in the sound intensity depends on the wavelength of the sound wave and the distance from the sound source to the microphone.
Specifically, the distance traveled is equal to half of the wave length. Based on this information, we can use the following formula to find the distance traveled by a sound wave before the microphone first detects a minimum in the sound intensity: d = λ/2 where d is the distance traveled, and λ is the wavelength of the sound wave. Therefore, the answer to the question is that the distance traveled by the sound wave before the microphone first detects a minimum in the sound intensity is equal to half of the wavelength. The appropriate units for this answer are meters (m), which is the SI unit of length.
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Gordon is making a list of forces for his science class. Which of the following should Gordon not list as a force? a mass b gravity c friction d a push or pull
Answer: mass
Explanation:
Its not a force its mass. We have mass but we arent having mass done to us.
What happens when an object experiences friction?
A. Friction changes mechanical energy to heat energy
B. Friction changes mechanical energy to electrical energy.
C. Friction changes mechanical energy to pizza.
D. Friction changes mechanical energy to light energy
Answer:
its A. because since heat energy means thermal i think it is A and also When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.
Explanation: your welcome and i hope its right
Una sustancia radioactiva, cuya temperatura es inconstante, aumenta su temperatura en 30ºF, luego disminuye e 40ºC, luego aumenta en 12R y por último disminuye en 10K; entonces la temperatura final de dicha sustancia: a) No varia b) Aumenta en 24R c) Disminuye en 48R d) Aumenta en 48R e) Disminuye en 24R
Answer:
What the heck
Explanation:
please help im stuck
Answer:
1) B
2) B
Explanation:
1) because the relative atomic mass of zinc is 29 and it has a valence electron of 2+ charge.
2) Oxygen because it is has the second highest electronegativity and has a valence electron of-2 charge.
Answer:
1.b,2.b
Explanation:
Vectors are unchanged if moved to another location as long as their length and direction remain unchanged
true or false
A negative correlation___
is not a very considerate way to compute your numbers
means that as one variable goes up, the other goes down
is only used in experiments that test topics like depression or agression.
has no relationship among the variables
A student starts at the origin and ends up at a position 500 meters north of the origin. She knows she walked 250 meters straight west, but then she was blindfolded and led to the final position. Assume she walked a straight path for the hidden leg of the trip. What displacement vector did she move?
Answer:
Explanation:
Displacement of the student will be gotten using pyhagoras theorem. Displacement is the distance covered in a specified direction.
D² = 500² + 250²
D = √500² + 250²
D = √250,000 + 62500
D = √312,500
D = 559.02metres
Hence the displacement vector of the girl is 559.02m
which of these can a force acting on a object not change ?
A direction of motion B state of rest
C Shape D mass
D)Mass
Hope it helps (:
A bumblebee is flying to the right when a breeze causes the bee to slow down with a constant leftward acceleration of magnitude 0.50 m s 2 0.50 s 2 m 0, point, 50, start fraction, start text, m, end text, divided by, start text, s, end text, squared, end fraction. After 2.0 s 2.0s2, point, 0, start text, s, end text, the bee is moving to the right with a speed of 2.75 m s 2.75 s m 2, point, 75, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction. What was the velocity of the bumblebee right before the breeze? Give the correct sign for your answer, using a coordinate system where rightward is positive. Round the answer to two significant digits.
Answer:
3.75 m/s
Explanation:
Given that a bumblebee is flying to the right when a breeze causes the bee to slow down with a constant leftward acceleration of magnitude 0.50 m/s^2. After 2.0 s the bee is moving to the right with a speed of 2.75 m/ s
What was the velocity of the bumblebee right before the breeze?
Since the breeze blows with the acceleration of 0.5 m/s^2 for 2 seconds, we can calculate the magnitude of the velocity at which it moves.
Acceleration = velocity/ time
Substitute the acceleration and time into the formula
0.5 = V/2
Cross multiply
V = 2 × 0.5
V = 1 m/s
The bumblebee is travelling right ward while the wind travels leftward.
The relative velocity = 2.75 m/s
Let the bumblebee speed = Vb
While the wind = VW
Vb - Vw = 2.75
Substitute the wind speed into the formula
Vb - 1 = 2.75
Vb = 2.75 + 1
Vb = 3.75 m/s
Therefore, the velocity of the bumblebee right before the breeze is 3.75 m/s
why a soft floor is provided in wrestling
Answer:
dhsuf'jaeifnsf mndwqj'ofjef skjfgikef
Explanation:
Answer:
so that the wrestlers dont get a bad injury
Explanation:
Which of the following correctly describes the relationship between speed and velocity?
Speed is the change in velocity over time; velocity is distance plus direction.
Speed is the change in distance over time; velocity is speed plus direction.
Speed is distance plus direction; velocity is speed plus time.
Speed is the change in acceleration; velocity is distance over time.
It is the second provided answer.
Speed is the change in distance over time; velocity is speed plus direction.
Jerrold just broke up with his girlfriend and is describing his current feelings about the breakup to his friend. According to Freud, from which part of Jerrold's mind did he pull the information to share? (2 points) Group of answer choices Unconscious Preconscious Conscious awareness Conscience
Answer:
Conscience
Explanation:
Conscience refers to a person's moral sense to differentiate between right and wrong to judge one's behaviour.
Jerrold just broke up with his girlfriend and is describing his current feelings about the breakup to his friend.
So, he pull the information from the conscience of Jerrold's mind.
When would an objects average speed and average velocity be different?
Answer:
the motion of an object is along a straight line and in the same direction, the magnitude of displacement is equal to the total path length. In that case, the magnitude of the average velocity is equal to the average speed.
A driver traveling at 100\,\dfrac{\text{km}}{\text{h}}100 h km 100, start fraction, start text, k, m, end text, divided by, start text, h, end text, end fraction notices the speed limit changes to 50\,\dfrac{\text{km}}{\text{h}}50 h km 50, start fraction, start text, k, m, end text, divided by, start text, h, end text, end fraction. The driver takes 0.9\,\text{s}0.9s0, point, 9, start text, s, end text to slow down to 50\,\dfrac{\text{km}}{\text{h}}50 h km 50, start fraction, start text, k, m, end text, divided by, start text, h, end text, end fraction with constant acceleration. We want to know how many meters the driver travels while slowing down.
Answer:
67.5
Explanation:
d = (Vo+ v/2)t
d = (150/2)(0.9)
d = 67.5
DESPERATE WIL GIVE BRAINLIST
Which type of rock will be formed if sedimentary rock becomes molten and then hardens?
A. metamorphic
B. igneous
C. clastic
D. foliated
Answer:
Igneous
Explanation:
A piece of metal is 4 cm by 10 cm by 2
cm. Find its mass if it has a density of 2
g/cm^3
Answer:
m = 160 g
Explanation:
Density = Mass / Volume
D = m/v
Step 1: Define
D = 2 g/cm³
V = 4 cm · 10 cm · 2 cm = 80 cm³
M = ?
Step 2: Substitute and solve for m
2 g/cm³ = m/80 cm³
m = 160 g
B.F. Skinner is best known for the development of _____.
Answer:
the theory of behaviorism
Explanation:
i looked it up¯\_(ツ)_/¯
Which statement best describes the movement of atoms in a solid?
O They are able to slide past each other.
O They spread apart as far as possible.
O They have no freedom to move.
O They are free to move in all directions.
Answer:
They have no freedom to move
Answer:
C
Explanation:
what is free fall ? give some example of it ?
Answer:
A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. ... Free-falling objects do not encounter air resistance.
Explanation:
How do you find Net Force?
Answer:
Net force is the total amount of force acting on an object when you take into account both magnitude and direction.[1] An object with a net force of zero is stationary. An unbalanced force, or net force of a magnitude greater than or less than zero, leads to acceleration of the object.[2] Once you have calculated or measured the magnitude of a force, combining them to find the net force is simple. Sketching a simple force diagram and making sure all of the forces are labelled and in the correct direction makes calculating net force a breeze.
Explanation:
If you throw a ball up with a velocity of 3 m/s , how long will it take for the ball to reach the top of its path
Answer:
t = 0.306 s
Explanation:
Given that,
Initial velocity of the ball, u = 3 m/s
When it reaches the top of its path, its final velocity, v = 0
We need to find the time it takes the ball to reach the top of its path. It can be calculated using first equation of motion.
v = u +at
Here, a = -g
[tex]0=u-gt\\\\t=\dfrac{u}{g}\\\\t=\dfrac{3\ m/s}{9.8\ m/s^2}\\\\t=0.306\ s[/tex]
So, the ball will take 0.306 s to reach the top of its path.
a car travelling at a velocity of 15ms -1 due north speeds up uniformly to a velocity of 30 ms -1 in 3 seconds. Calculate the acceleration.
Answer:
5 m/s²
Explanation:
Given:
v₀ = 15 m/s
v = 30 m/s
t = 3 s
Find: a
v = at + v₀
30 m/s = a (3 s) + 15 m/s
a = 5 m/s²
10
Design an experiment that can determine the relationship between
length of a pendulum and period (swingtime). Explain which variable is
dependent, which is independent, and list at least variables that will need
to be controlled. *
anyone know???
Answer:
Independent variable: length of pendulum
Dependent variable: period or swing time
Control variables: same mass of pendulum, point of release of each pendulum
Explanation:
This experiment involves determining the relationship between the length of a pendulum and period (swingtime) i.e. whether the length of the pendulum affected the period. In order to set up an experiment, pendulums with different lengths will be used. After the release of each pendulum, the swingtime or period (T) is measured.
- The independent variable is the variable that is changed or manipulated in the experiment. In this case, the independent variable is the LENGTH OF THE PENDULUM, which is changed for each pendulum.
- The dependent variable is the variable that is measured in an experiment. In this case, the PERIOD OR SWINGTIME is the dependent variable because it is what is measured.
- The controlled variable in an experiment is the variable that is kept unchanged for all the groups in an experiment. In this case, the MASS OF THE PENDULUM AND THE POINT OF RELEASE OF EACH PENDULUM are the control variables.
Q.1. What determines the rate at which energy is delivered by a current ?
Explanation:
The rate of consumption of electric energy in an electric appliance is called electric power. Hence, the rate at which energy is delivered by a current is the power of the appliance.
a car travelling east a constant speed of 20 metre per second be constructed at 3.8 metre per second square when it is 200 behind currently moving East at a constant speed of 2 metre per second how long will it take for the car to catch up with the truck how far will it truck and car travel during this time
Let, after t minutes car catch up with truck.
So, distance covered by car is, d = 200 + 2t.
Acceleration of car is, a = 2 m/s².
Initial velocity, u = 20 m/s.
Now, by equation of motion :
[tex]s =ut+\dfrac{at^2}{2}[/tex]
[tex]200+2t = 20t + \dfrac{2t^2}{2}\\\\t^2+18t -200=0[/tex]
[tex]t=\dfrac{-18\pm\sqrt{18^2-4(1)(-200)}}{2}\\\\t = \dfrac{-18\pm33.53}{2}\\\\t=7.765\ s[/tex]( eliminating negative solution )
Therefore, time required is 7.765 s.
What does AC stand for in physics?
A. alternating current
B. alternative circult
C. alternating composition
D. all charge
Answer:
Alternating current
_______ is taking what you have observed and expressing it as a number.
Answer: measurement
Philadelphia is 150 km south of New York City. With what constant velocity (km/hr) would a plane have to fly to go from New York to Philadelphia in 20 minutes?
Answer: 450km/h
Explanation:
What type of energy is formed when chemical bonds are broken?
Light energy
Thermal energy
Chemical energy
Radiant energy
Answer:
Chemical
Explanation:
Just cuz
Answer:
Its chemical
Explanation:
I just took the quiz
The effectiveness of biofeedback has been a subject of controversy because biofeedback __________.
A.
has no reported side effects
B.
cannot be effectively tested
C.
has no reported negative effects
D.
requires uncomfortable electrodes
please help
Answer:
B
Explanation:
cannot be effectively tested
The effectiveness of biofeedback has been a subject of controversy because biofeedback cannot be effectively tested.
What is biofeedback therapy?
You can learn to control certain of your body's functions, like your heart rate, using a technique called biofeedback.You are connected to electrical sensors during biofeedback, which enables you to learn more about your body.An alternative medical strategy called biofeedback instructs patients on how to influence how their bodies work.Your physical and emotional health may be improved by this mind-body therapy.An expert monitors your body's processes using devices and monitoring equipment during a biofeedback session. With the aid of visual or aural feedback, people can learn to recognize the bodily manifestations of stress and anxiety, such as elevated heart rate, body temperature, and tense muscles.Sensors linked to your body are used in biofeedback therapy to track important bodily processes.You are supposed to learn more about how your body functions with the aid of biofeedback.You might be able to address health issues and gain better control over some bodily systems with the assistance of this knowledge.Biofeedback is generally safe, but it might not be appropriate for everyone. Biofeedback devices might not work properly on people with certain medical conditions, such as heart rhythm problems or certain skin conditionsTo learn more about biofeedback refer
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