Answer:
B.) the object caused the wave to refract
Explanation:
The object has caused the wave which is traveling through the air to refract back. Thus, the correct option is B.
What is refraction of wave?Refraction is the phenomena which includes the change in the direction of waves which occurs when the waves travel from one medium to another medium. Refraction is always accompanied by a wavelength and change in speed of the wave. Diffraction is the bending of waves of sound and light which takes place around the obstacles and openings.
A wave traveling through the air meets an object and bounced off its flat surface at a new angle will experience refraction of waves.
Therefore, the correct option is B.
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15. A spring has a constant of 152 when a force of 50.92 N is applied to it. How far did the spring stretch?
O=0.321 m
O z=0.418 m
O z=0.289 m
Oz=0.335 m
O None of these is correct.
Answer:
Oz=0.335 m
Explanation:
Given parameters;
Spring constant = 152 N/m
Force applied = 50.92N
Unknown:
How far did the spring stretch = ?
Solution:
For springs;
F = ke
F is the force
K is the spring constant
e is the extension
Now insert the parameters and find e;
50.92 = 152 x e
e = 0.335m
behavioral addaptions of a flamingp
Answer:Webbed feet support them on soft mud. Flamingos frequently stand on one leg. Being ableto curl the leg under the body, American flamingo keeps the foot warm andconserves body heat. Flamingo stand on one leg in both cool and warmenvironments.
Explanation:
How does the plastic become positively charged
In a typical golf swing the club is in contact with the ball for about 0.0010 s. If the .045 kg ball experiences a force of 4000 N, what is the final velocity of the golf ball?
Answer:
v = 88.89 [m/s]
Explanation:
To solve this problem we must use the principle of conservation of momentum which tells us that the initial momentum of a body plus the momentum added to that body will be equal to the final momentum of the body.
We must make up the following equation:
[tex]F*t = m*v[/tex]
where:
F = force applied = 4000 [N]
t = time = 0.001 [s]
m = mass = 0.045 [kg]
v = velocity [m/s]
[tex]4000*0.001=0.045*v\\v=88.89[m/s][/tex]
Which two types of potential energies would be types of mechanical energies? electrical and kinetic nuclear and chemical radiant and thermal elastic and gravitational
The two types of potential energies that would be types of mechanical energies are:
thermal elastic energy and gravitational energy.What is potential energy?The term potential energy is the energy possessed by a body by virtue of its position. It is different from kinetic energy which is due to the state of motion of a body.
The two types of potential energies that would be types of mechanical energies are;
thermal elastic and gravitational energy.Learn more about mechanical energy: https://brainly.com/question/1932868
Answer: D - elastic and gravitational
Explanation: Edge 2023
A circuit contains two 1.5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current
Answer:
The current is 1 A
Explanation:
Current in a Series Connection
When two or more elements are connected in series, all of them have the same current, and the sum of their individual voltages is the total voltage applied to the circuit.
According to Ohm's law:
V=R.I
Where V is the voltage, R is the resistance and I is the current of a circuit.
We have a voltage of V=1.5 V + 1.5 V = 3 V and a resistance of R=3 ohms.
We can calculate the current by solving for I:
[tex]\displaystyle I=\frac{V}{R}=\frac{3}{3}=1\ A[/tex]
The current is 1 A
In this graph, the slope of the curve is
increasing. Explain this in terms of velocity
and acceleration.
Answer:
The slope of an x vs. t graph represents instantaneous velocity. As we can see, the slope of this graph is not constant- it is changing. This means that the instantaneous velocity is also changing. Therefore, the object is accelerating.
Explanation:
As Earth revolves around the sun, what is this balance point that marks the actual center of revolution between two orbiting celestial bodies
Answer:
center of mass
Explanation:
newton's law of gravitation is measured from the center of the mass, not the surface. so you will measure the radius from the center of the sun to the center of the earth.
whos the best character in assassination classroom
Answer:
Its a tie between Karma, Korosensei, and nagisa
Explanation:
Personally Karma
if a 12 V battery is connected to a 6 Ohm resistor, what is the current through the resistor?
plz help it's due in 5 days ;w;
Answer:
From the ohms law, V=IR
Where V is Voltage
I is current
R is Resistance
:. I=V/R
I=12/6
I=2A
The current will be 2A
Explanation:the flow of charges per unit time is inversely proportional to the resistance, when resistance increase, the current flow decreases to appreciate the change.
How would you find the horizontal net force for the free body diagram below
Subtract Fn from Fa
Add Ff from Fa
Subtract Ff from Fa
Add Fa and Fg
Answer:
Add Ff from Fa
Explanation:
Fnet = sum of all force
horizontal net force = Ff + Fa
Kathryn was in a minor car accident while driving her sister to school six months ago. Since then, she experiences anxiety whenever she has to drive. Her mother has encouraged Kathryn to drive even though she finds it stressful. In this scenario, the most likely stressor causing Kathryn to experience anxiety is . Kathryn's stressor is most likely related to her .
Answer:
Kathryn's stressor is most likely related to her car accident.
Explanation:
Stressor: In psychology, the term "stressor" is described as any specific environmental stimulus, event, or experience that tends to cause stress in a particular individual or person. Therefore, these experiences or events are being perceived as challenges or threats to the person and it can be either psychological or physical.
Example: Divorce, getting married, death of a loved one, etc.
In the question above, "the most likely stressor causing Kathryn to experience anxiety is car accident".
Answer:In this scenario, the most likely stressor causing Kathryn to experience anxiety is
✔ driving a car
.
Kathryn’s stressor is most likely related to her
✔ past experience
.
Explanation:
it just is
8.
What quantities are needed to describe the position of a water fountain relative to where you are standing?
Answer:
D. the distance and direction to the water fountain
Explanation:
To describe the position of a water fountain relative to where one is standing, the distance and direction to the water fountain must be known.
This quantity is known as the displacement.
Displacement is a vector quantity with both magnitude and direction. To specify the magnitude of a displacement, we use the length of path and in this case the height or sometimes the distance. The direction attribute distinguishes distance from displacement The perfect quantity to solve this problem is the displacement and it specifies the distance of the path and the direction traveled.Michael's car ran over a nail which made a hole in one of the tires letting the pressurized air in the tire out of it at what point will it stop pouring out of the hole in the tire
Answer:
The air will stop pouring out of the hole in the tire when the pressure inside the tire is equal to atmospheric pressure
Explanation:
The question relates to equilibrium conditions
The given parameters are;
The condition of the pressure of the air in the tire, P = Pressurized, P > Atmospheric pressure
The pressurized air is let out of the tire through a hole made by a nail
Therefore;
When the pressure inside the tire is more than atmospheric pressure, the force per unit area of the air from the side of the hole inside the tire is more than the force per unit area acting in the opposite direction and the pressure forces the air out of the tire
Therefore, the air continues pouring out of the hole in the tire up to the point when the pressure inside the tire becomes equal to atmospheric pressure, at which point the force per unit area of the air on either side of the hole are equal.
A physical property is a characteristic of a substance is one that _____.
A.) can be observed by changing it into a different substance
B.) is seen after changing it into a different substance
C.) can be observed without changing it into a different substance
D.) does not involve freezing or boiling the substance
Which of the following actions will always decrease voltage?
A. Decreasing resistance and increasing current
B. Increasing resistance and decreasing current
C. Decreasing resistance and keeping current constant
D. Increasing resistance and keeping current constant
Answer:
D. Increasing resistance and keeping current from A P E X :))
Explanation:
The decreasing resistance and keeping current constant leads decreasing in voltage option (C) is correct.
What is voltage?Voltage is the force applied by the power source to charged electrons in a conducting loop, allowing them to perform tasks such as igniting light.
As we know according to the ohm's law:
V = IR
Where 'V' is the volatge,
'I' is the current.
'R' is the resistance.
If we assume 'I' is constant
Then V∝R
As the resistance increases the voltage increases and vice versa.
Thus, the decreasing resistance and keeping current constant leads decreasing in voltage option (C) is correct.
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For maximum benefit, you should exercise 5-7 times a week for 60 minutes and your heart rate should be between _____________ of your max heart rate.
Answer:
60 to 80%
Explanation:
For maximum benefit, the heart rates during exercise regimes should be between 60 to 80% of an individual's maximum heart rate.
The maximum heart rate varies from individuals to individuals and largely depends on age. It is calculated by subtracting one's age from 220. For example, a person that is 40 years old would have a maximum heart rate of;
220 - 40 = 180 beats per minute.
Such a person's heart rates during exercises should be between 108 and 144 beats per minute for maximum benefits.
Which of the following is true for sound waves?
They require a medium
They are unrelated to vibrations.
They can travel in a vacuum
They cannot travel through liquids
None of the above
Explanation:
Answer
λ α
f
1
Wave velocity = Wavelength × Frequency
Thus, we can say that wavelength is inversely proportional to the frequency.
FALSE - Only electromagnetic waves can travel through a vacuum; mechanical waves such as sound waves require a particle-interaction to transport their energy. There are no particles in a vacuum.
Which equation is the slope-intercept form of this equation? y+8=4(x−3) 4x−y=−20 y+8=4x−12 y=4x−20 x=14y+5
Answer:
y=4x−20
Explanation:
The given equation is :
y+8=4(x−3)
Using distributive property at RHS.
y+8=4x−12
Taking variables to the one side and constant terms to another side.
y-4x = -12-8
y-4x=-20
or
y = 4x-20
Hence, the correct option is (c).
There are two types of photons (particles of light) used in this simulation, Visible and Infrared. Select the visible photon first.
Explanation:
if this is wrong sorry but I think it is Infrared
answer:
earth’s surface absorbs the sunlight photons and reflects infrared photons
explanation:
this is edmentum's exact answer :)
Characteristics we use to tell the difference between kinds of matter are called___ properties
Answer:
I believe it's called qualitative
Explanation:
Help plz i’ll mark branliest
Answer:
please give me BRAINLIEST Answer
Explanation:
10.0 210.0 ms2
5.0 25.0 ms2
15.0 215.0 ms2
Two identical projectiles were projected at 200 km/h the first one is at an angle 60 to the horizontal while the second one is at angle of 60 to vertical which projectile reaches a greater horizonatal range
Answer:
The angle that will have the most range (Goes further) will be the one that is shot with 60 ° with the horizontal.
Since the one that shoots with respect to the vertical, it will only reach higher. And it won't go as far as the horizontal.
Greetings.
Danna.
The density of iron is 7.87 g/cm3. If an iron cannonball has a volume of 105 cm3
what is the mass of the ball?
the answer is 0.284 lb/in3
What can chemical formulas represent?
A.) mixtures
B.) elements
C.) compounds
D.) atoms
Answer:
A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. In empirical formulae, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, by ratios to the key element.
hope this helps you
Convert 9600 nm to pm:
Answer:
hsjdjdht
Explanation:
Juan y Pedro transportan una caja que pesa 120,00 Lb sobre una tabla uniforme de 12 pies de largo y peso de 44,5 Lb. El peso de 120 Lb está a 4,9 pies de Pedro. ¿Cuál es el módulo de la fuerza en Lb que debe ejercer Pedro por el extremo derecho de la tabla horizontal para sostener este peso?
Answer:
F = 93.25 lb
Explanation:
To solve this problem let's use the rotational equilibrium condition
Σ τ = 0
let's fix a reference system located at the end of the table, the position of Juan and assume the counterclockwise turns as positive
F_jhon 0 - w l / 2 - W (l-4.9) + F l = 0
F = w l / 2 + W (l -4.9) / l
where w is the weight of the table and W the weight of the box
let's calculate
F = (44.5 12/2 + 120 (12- 4.9)) / 12
F = 93.25 lb
Freida has an injury in the appendicular region of her body. Which structures could be injured?
A: the elbow or wrist
B: the chest or head
C: the abdomen or pelvis
D: the leg or neck
Answer:
[tex]\boxed {\boxed {\sf A. \ The \ elbow \ or \ wrist}}[/tex]
Explanation:
The appendicular region of the body encompasses all the appendages, limbs, and extremities. Some examples include:
Wrist Thigh Foot Ankle Elbow Arm Fingers and toesOn the other hand, the axial region contains the central body parts, such as
Neck HeadChestAbdomen/trunkThis question asks us to identify where Freida's appendicular injury. It cannot involve a body part in the axial region, so the head, neck, chest, and abdomen are not correct. Therefore, we can eliminate choices B (chest and head), C (abdomen), and D (neck), leaving A as the correct answer.
If a runner exerts 350 J of work to make 125 W of power, then how long did it take the runner to do the work?
Explanation:
p=w/t
t=w/p
=350/125
t=2.8s
How are electromagnetic waves different than all other waves?
Answer:
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space. ... This proved that radio waves were a form of light
Answer:
They travel through space
Explanation:
2021 edge