Answers
Answer:
Longitudinal wave
Explanation:
Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce increases and decreases in pressure.
Related Questions
A force of 500N Is applied to a steel wire of goss_sectional area 0.2m2 the tensele stress is a. 2.5x10 1nm-2 b. 1 0x102nm-2 c. 2.5x103nw-3 d. 1.0x103nm-2
Answers
Answer:
the tensile stress of the steel wire is 2.5 x 10³ Nm⁻².
Explanation:
Given;
applied force, F = 5000 N
cross sectional area of the steel wire, A = 0.2 m²
The tensile stress of the steel wire, is calculated as;
[tex]\sigma = \frac{F}{A} \\\\\sigma = \frac{500}{0.2} \\\\\sigma = 2500 \ N/m^2\\\\\sigma = 2.5 \ \times \ 10^3 \ Nm^{-2}[/tex]
Therefore, the tensile stress of the steel wire is 2.5 x 10³ Nm⁻².
ms
2. The half-life of radium-226 is 1600 years. If a sample of radium-226 has an original activity of
200 Bq, what will it's activity be after:
i) 3200 years?
4800 years
iii) 6400 years
Answers
If a droplet has three extra electrons, what is its measured charge?
A. One-One-third third of of an an elementary elementary charge
B. One elementary charge
C. Two elementary charges
D. Three elementary charges
Answers
Answer:
The answer is d
Explanation:
Because he is from the same species
Answer:
D
Explanation:
A girl weighing 500 Newtons takes 50 seconds to climb a flight of stairs 18 meters
high at a speed of 0.36 m/s. Her power output vertically is-
Answers
Answer:
180Watts
Explanation:
Power = Force * distance/Time
Given
Force = 500N
Distance = 18m
Time t = 50secs
Substitute into the formula
Power = 500*18/50
Power = 10 * 18
Power = 180Watts
Hence her power output vertically is is 180Watts
The reaction between magnesium (Mg) and oxygen (O2) forms magnesium oxide (MgO).
a. Write a balanced chemical equation to represent this reaction.
b. Identify the type of reaction this represents.
Answers
Answer:
2 Mg + O2 = 2MgO
Type: Synthesis
PLS ANSWER FAST WILL GIVE BRAINLEST!!
Answer using mass m= F divided by a
And also kilograms {kg}
A 7.5 N force is applied to a football generating an initial acceleration of 15 m / s2. Calculate the mass of the football.
Answers
Answer:
from
force =mass x acceleration
mass = force/acceleration
m = f/a
m = 7.5/15
m=0.5kg
[tex]\huge\bf{\pink{\underline{\underline{\mathcal{AnSwer࿐}}}}}[/tex]
Given:-acceleration = 1000 m/s²
force = 5000 N
To find:-Mass of the cannonball
Formula to be used:-[tex]\longrightarrow[/tex] [tex]\underline{\boxed{\sf mass = \dfrac{force}{acceleration}}}[/tex]
Solution:-:[tex]\implies[/tex] [tex]\sf mass = \dfrac{5000}{1000}[/tex]
:[tex]\implies[/tex] [tex]\sf mass = 5 kg [/tex]
hence, the required answer is 5kg.
______________________________
An object with a potential energy of 981 J is placed at a height of 2m. What is the mass of the object?
Answers
Answer:
the mass of object is 2000
Typical Pressurized Water Reactors can produce 1100 to 1500
megawatts, or about _______
Joules/second.
Answers
Answer: about 1,100,000,000 to 1,500,000,000 Joules/second
Explanation:
1 MW (megawatt) = 1,000,000.00 J/s (joules per second)
1100(1,000,000) = 1,100,000,000
1500(1,000,000) = 1,500,000,000
When do websites collect personal and private information?
when a person turns on a computer
when an account is made on the website
whenever someone watches a video
when a person connects to the internet
Answers
Answer:
when an acount is made online i can also give you the other awnsers
Explanation:
A body of mass 1kg is attracted by the earth with a force which is equal to
Answers
Answer:
9.8N
Explanation:
Given the following data;
Mass = 1kg
We know that acceleration due to gravity is equal to 9.8m/s²
To find the force:
Force = mass * acceleration
Substituting into the equation, we have:
Force = 1 * 9.8
Force = 9.8N
What are some of the objects found in space and their characteristics?
Answers
Answer:
meteor
Explanation:
big rock or metal maybe
How much force must be applied to a 4 kg to get it to accelerate at 3
m/s^2?
Answers
Answer:
12 g i think
Explanation:
brainliest pls
40 mi/hr south is:
a displacement
a speed
a velocity
Answers
Answer:
Velocity
Explanation:
Since velocity is magnitude and direction, 40mph south is velocity.
what is related to wave speed
A.How loud a wave is
B.Crest and Amplitudes
C.Frequency
D.Troughs and amplitudes
Answers
Answer:
c
Explanation:
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In the formula Q = m x C x ΔT, which symbol represents specific heat?
A. Q
B. ΔΤ
C. m
D. с
Answers
Explanation:
Q = energy applied
m = mass
C = specific heat
ΔT = delta T = change in temperature
Need help ASAP
Thanks + BRAINLIST only for correct answer
1.Cell phones convert sound waves into______waves.
-light waves
-sound waves
-radio waves
2.Electromagnetic waves used in cell phone communications are called?
-microwave
-radio wave
-infrared
-all of the above
3.To send out a radio signal far and wide...it is called?
-broadcast
-casting
-antenna
Answers
Answer:
Explanation:
1.electric
2.radio wave
3.broadcast
Hope it helped you.
help plz i have until 4.20 plz
Answers
Answer:
Substance 1 because it became a liquid faster
Explanation:
The first charge is pulling on the second. Is the second pulling on the first? Explain your reasoning
Answers
Answer:
law of action and reaction.
Explanation:
In Newton's three laws it is established that forces act in pairs, if one body interacts with another the second interacts with the first, this is the so-called law of action and reaction.
In this case, when the first load pulls on the second, the second pulls on the first, the two forces are not canceled because each one is applied to a different body.
Therefore the magnitude of the forces is the same, but the direction is opposite and each one is applied in a body
An electric force is an attractive or repulsive interaction. Newton's laws of motion define how it affects things, just like any other force. Yes, the second pulling on the first.
How does Newton's third law explain in terms of electricity?An electric force is an attractive or repulsive interaction between any two charged things. Newton's laws of motion define how it affects things, just like any other force.
The motion of objects under the influence of such a force or combination of forces is studied using Newton's laws.
The analysis generally starts with the creation of a free-body diagram in which the kind and direction of the various forces are represented by vector arrows.
Newton's laws of motion define how it affects things, just like any other force. Hence Yes, the second pulling on the first.
To learn more about Newton's third law refer to the link;
https://brainly.com/question/974124
does anyone have the same thing for the brainly app
mine said "this operation couldn't complete" an does anyone know how to fix it
i am on iphone
Answers
Answer:
PICK ONE
Explanation:
an atom with an atomic number of 12 and a mass number of 25 can best decided by which of these
Answers
Answer:
An atom that contains 12 protons
Explanation:
Atomic number is the same as how many protons and electrons an atom has. The mass is how many protons and neutrons there are together. In this case it would be 25 (mass) - 12 (protons) = 13 (neutrons).
In the periodic table of elements, what do all of the elements in group 2 have in common?
A. An atom of each element can hold up to eight electrons in its outer energy level.
B. An atom of each element can hold up to six electrons in its outer energy level.
C. Each element is an alkaline earth metal.
D.Each element is a halogen.
E.Each element is dull, brittle, and breaks easily.
I need help to be able to get into a hard class and this is the last question. PLS HELP. Who ever answers I will name brainliest if correct
Answers
Answer:
Ccccv
Explanation:
EN İYİ SEÇERMİSİN
A sound wave produce by a chime 515 m away is heard 1.50 s later.What is the speed of the sound in air?
Answers
Answer:
the seed of the sound in the air is 343.3 m/s
Explanation:
The computation of the speed of the sound in the air is shown below:
As we know that
Speed = Distance divided by Time
So, here speed be 515m
And, the time is 1.50 second
So, the speed of the sound is
= 515m divided by 1.50 seconds
= 343.3 m/s
hence, the speed of the sound in the air is 343.3 m/s
Why do we resort to violence when we are faced with adversity?
Answers
We turn to violence to express emotion.
I believe we resort to violence when faced with adversity because it becomes difficult to deal with. Being in a rough situation cause distress. That builds up and when a person can no longer hold it in, they can get violent. Turning to violence becomes their way of “letting it out”.
A force of 30 N is used to push a box along the floor a distance of 5 meters. How much workwas done
Answers
Answer:
the answer for how much work was done is 90
Work done to push a box is 150 J.
What is work?a force appearing upon an item to purpose a displacement.WORK = FORCE * DISPLACEMENTmechanical conservation of energy is the change in kinetic energy is equal to the work done.work energy theorem states that total energy change is equal to work done.
force= 30N
displacement= 5 meters.
work done= 30 * 5
⇒ 150 joule.
Learn more about work here:-https://brainly.com/question/2005046
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Due Tomorrow Hellpp plzzzz
Answers
Explanation:
All voice. with write n in English
How do you prove you know which object has more momentum without calculating it?
Answers
Answer:
The momentum of an object varies directly with the speed of the object.
Explanation:
Two objects of different mass are moving at the same speed; the more massive object will have the greatest momentum. A less massive object can never have more momentum than a more massive object.
A car traveling at 7.0m/s^2 accelerates uniformly at 2.5 m/s. Reach a speed of 12.0m/s.how long does it take for this acceleration to occur?
Answers
Answer:
2 sec
Explanation:
time taken = [tex]\frac{v-u}{a} = \frac{12-7}{2.5} = 2[/tex]
Complete play the table by writing the location orientation size and type of image formed by the lenses below.
Please help me guyss!! :(
Answers
Answ
Explanation:
HOPE IT HELPS..
The image formed by the location of object is beyond 2F the image by convex lenses is between F and 2F and is inverted, smaller and and real image. If it is at 2F, the image is inverted with the same size and real.
What is a convex lens ?A convex lens is a type of lens that is projected outwards and shows the real image of an object. Whereas a concave lens is curved inwards and shows virtual image of objects.
The image formed at by the location of convex lenses beyond 2F is inverted, smaller and and real image. If it is at 2F, the image is inverted with the same size and real. If the lens is placed between F and 2F the image formed is beyond 2F and it will be inverted, enlarged and real.
If the object is at F , no image will be formed. If it at between F and the lens, then the image forms beyond 2 F which is upright, enlarged and virtual.
The object be at any position with respect to the focal length of lens, the image formed by a concave lens is between F and the lens and upright, small and virtual.
Find more on concave lenses:
https://brainly.com/question/3860144
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A house of mass 500 kg is lifted 25 m by balloons.
Calculate the increase in gravitational potential energy, Ep.
(g = 10 N/kg)
Enter your answer as a number - NO units
Answers
Gpe = 500*10*25
Gpe = 125000J
Derivation
law of
conservation
of momentum
Answers
Applying Newton's third law, these two impulsive forces are equal and opposite i.e. If the time of contact is t, the impulse of the force F21 is equal to the change in momentum of the first object. The impulse of force F12 is equal to the change in momentum of the second object.
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