Answer:
Mechanical waves
Longitudinal waves
Explanation:
Sound waves are mechanical waves because they require a medium to transport their energy from one place to another.
Sound waves are longitudinal waves because the vibration of sound is transported parallel to the direction that the sound waves move.
10)
The population of humans living on the Earth has increased tremendously due to scientific discoveries and technology. Which
statement BEST summarizes how science and technology have contributed to human population growth?
A)
Science and technology have increased the human birth rate.
B)
Science and technology have been crucial in opening up new areas for
human development.
Science and technology have allowed for an increased emphasis on
education and the arts.
C)
D)
Science and technology have increased food and reduced death rates due
to illness and malnutrition.
The correct answer would be
D. Science and technology have increased food and reduced death rates due to illness and malnutrition.
I took this on USATestPrep, it's 100% right
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.
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.
In your own words, why does a car have negative acceleration when it stops at a stop light
Answer:
Explanation:A driver slowing down to stop at a light is accelerating. ... acceleration is opposite to the motion, the speed of the object decreases. The car slows down. Slowing down is also called negative acceleration.
whos the best character in assassination classroom
Answer:
Its a tie between Karma, Korosensei, and nagisa
Explanation:
Personally Karma
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.
Where on the track would the cart have the most kinetic energy?
Group of answer choices
Position A
Position B
Position C
Position D
Answer:
Position C
Explanation:
Position A has the highest amount of potential energy. At position C, most of that potential energy was transformed to kinetic energy. Because it is at the bottom part of the hill, and is beginning to reclimb, point C has the highest kinetic energy.
The energy of the body by the virtue of its motion is known as the kinetic energy of the body. At position C on the track would the cart have the most kinetic energy.
What is kinetic energy?The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.
According to the law of conservation of energy can not be created nor be destroyed can be transferred from one form to another form.
The total energy is defined as the sum of kinetic energy and potential energy.
Total energy = kinetic energy+potential energy
Position A contains the most potential energy. The majority of that potential energy was converted to kinetic energy at location C.
Point C has the most kinetic energy since it is at the bottom of the slope and is starting to climb again.
Hence at position C on the track would the cart have the most kinetic energy.
To learn more about kinetic energy refer to the link;
brainly.com/question/999862
Which planet in our solar system is considered the most thoroughly studied?
1. Mars
2. Pluto
3. Venus
4. Jupiter
Answer:
Mars
Explanation: Because we have sent a actual robot there to gather intel
2. If, in the previous question, there is a 15 N kinetic frictional force opposing the motion, how much work is
done by the force of friction? Does friction do positive work or negative work on the block? Draw a free-body
diagram to support your answer.
Answer:
this answer your question
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.
A crate of toys remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crates increase in speed up the hill
Answer: the force of static friction of the sleigh on the crate
Explanation:
The force that is responsible for the crates increase in speed up the hill is the force of static friction of the sleigh on the crate.
When a light horizontal push is applied and which isn't enough to move the box, the static friction force will also be directly opposite to the push.
When an individual pushes harder, the force of the friction will then be enough to create a push.
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.
Learn more about the voltage here:
https://brainly.com/question/13521443
#SPJ2
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
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:
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.
Calculate kinetic energy of a 1.2 kg cart moving at 20.0 m/s.
Answer:
240 J :)
Explanation:
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
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:
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.
How does the plastic become positively charged
In an inverse relationship, when one variable increases, the other___
Answer:
In an inverse relationship, when one variable increases, the other variable decreases.
Explanation:
Hope this helps! ^^
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
a body of mass 0.6kg is thrown vertically upward from the ground with a speed 20m/s. calculate potential energy at the maximum height reached
Answer:
120J
Explanation:
Given parameters:
Mass of the body = 0.6kg
Speed = 20m/s
Unknown:
Potential energy at maximum height = ?
Solution:
The potential energy at maximum height is equal to the kinetic energy that the body has gained.
Kinetic energy = [tex]\frac{1}{2}[/tex] mv²
Kinetic energy = [tex]\frac{1}{2}[/tex] x 0.6 x 20² = 120J
At the maximum height, the potential energy will be 120J
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).
Your friend says that if Newton’s third law is correct, no object would ever start moving. Here is his argument: You pull a sled exerting a 50 N force on it. According to Newton’s third law the sled exerts the force of 50 N on you in the opposite direction. The total force is zero, thus the sled should never start moving. But it does. Thus Newton’s third law is wrong. What is your opinion about this answer? How can you convince your friend of your opinion?
pls help
Answer:
Explanation:
You pull a sled exerting a 50 N force on it , sled also exerts a force on you . These forces are action and reaction force , as per third law of Newton . These two forces are equal and opposite . But they do not act on the same object so they do not cancel each other . They act on different objects , one on the sledge and the other on you . Due to force on sledge , sledge moves in the direction of force or towards you . You will start moving in opposite direction if frictional force of ground is nil or less .
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
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.
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
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 :)
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