Answer:B
Explanation:
Answer:
The answer is B
Explanation:
Which frequencies can humans can hear but not mice
show that for a clósed organ pipe only odd harmonics are present wheras for an open organ pipe all the harmonics are present
Answer:
For a closed organ pipe, the point at the closed end is always a node, 'N' while the open end is always an antinode, 'A'
Therefore, for a closed organ pipe, we only have;
NA = N↔A = First harmonics = f₁
NANA = NA↔AN↔ NA = Third harmonics, = f₃ = 3·f₁
NANANA = NA↔AN ↔ NA ↔ AN ↔ NA = f₅ = 5·f₁
It can also be shown that for a closed organ pipe, only f₇, f₉, f₁₁, ... are present
Therefore, a closed organ pipe has only odd harmonics present
For an open organ pipe, we have;
ANA = First harmonics = f₁
ANANA = ANA ↔ ANA = Second harmonics = f₂ = 2·f₁
ANANANA = ANA ↔ ANA ↔ ANA = Third harmonics = f₃ = 3·f₁
Similar relationship exist for f₄, f₅, f₆...
Therefore, for an open organ pipe, all harmonics, (multiples of the fundamental, f₁) are present
Explanation:
A boy moves around a square path of side 15m. He completes 1 round in 40 sec. 1 Calculate the displacement of the boy at the end of 2min 20sec.
Plsss answer fast!
Answer:
Explanation:
2 min 20 sec = 140 sec .
In 40 sec one round
In 140 sec 140 / 40 round = 3.5 round .
That means the boy will be positioned at the diametrically opposite corner of the square path .
side of square path = 15 m
length of diameter = 15√2
= 21.21 m
Displacement of boy is 21.21 m .
A lift that weighs 300 N moves a man with a weight of 950 N upwards by 12 m. How much work is done to move the lift this height?
The total work done to move the lift to this height if, A lift that weighs 300 N moves a man with a weight of 950 N upwards by 12 m, is 15000 Joules.
What is work done?When an object is moved over a distance by an external force, at least a portion of that force must be applied in the direction of the displacement. This is known as work in physics.
Given:
A lift that weighs 300 N moves a man with a weight of 950 N upwards by 12 m,
Calculate the total force as shown below,
Total force = Lift weight + man weight
Total force = 300 + 950
Total force = 1250 N
Calculate the work done as shown below,
The work done = Total force × displacement by total force
The work done = 1250 × 12
The work done = 15000 Joules
Thus, the total work done is 15000 joules.
To know more about work done:
https://brainly.com/question/29762840
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What is the blank? (physics)
The total energy of a system is equal to the energy added to the system plus the work and the ____ that is produced.
Answer:
Heat???
Sorry I am not at all sure
estion 3
What is the velocity of a 1120 kg car that has the momentum of 53,760 kg*m/s?
mentum
Answer:
Velocity = 48 m/s
Explanation:
Given:
Mass = 1,120 kg
Momentum = 53,760 kg(m/s)
Find:
Velocity
Computation:
Velocity = Momentum / Mass
Velocity = 53,760 / 1,120
Velocity = 48 m/s
The brakes of a lorry are in a poor condition
What effect will the condition of the brakes have on thinking distance and the braking
distance of the lorry?
Answer:
friction
Explanation:
Her brakes will squeak and possibly slide or skid on concrete due to her brakes.
BUT it really depends on the condition of the wheels. Now it matters on the surface as well. Has the road been eroded? what has happened with her brakes? and what texture are the wheels? can seismic waves travel through them?
Answer:
thinking distance stays the same and the braking distance increases
AQA Approved.✅
Explanation:
pls help me i will name brainliest
Answer:
a for the first one b for the second
Fred is conducting a controlled experiment to test whether using a grow light at night will help a tomato plant grow faster. Below are the steps to Fred's experiment: Plant tomato plants in two separate, but identical, flowerpots. Place the flowerpots in the same area outside during the day. At night, bring both flower pots inside and place one in the dark and one under a grow light. Give the plants the same amount of food and water each week. Measure the growth of the plants. Draw conclusions based on the data collected. Which of the following variables must Fred hold constant in this experiment?
Answer:
the type of tomato plants used.
Explanation:
10. CALCULATE: Find the amount of power used in each of the following examples. Show your calculations. a. You use a force of 10 N to move a box 100 m in 10 seconds. b. An athlete lifting weights does 900 J of work in 1 second. C. A truck does 30,000 J of work in 15 seconds. d. A fumiture mover uses a force of 150 N to push a large trunk 5 m across the floor in 5 seconds
Answer:
please find attached pdf
Explanation:
Which vector has a y-component with a length of 3?
A. C
B. d
C. a
D. b
Answer:
Option C : a
Explanation:
What causes a ray of white light to split into seven colors when passed through
prism?
Answer:
Dispersion of light
Explanation:
On Earth, the gravitational field strength is 10 N/kg. Calculate E for a 4 kg bowling ball that is being
held 2 m above the ground
Answer:
People are exposed to sources of radiation in all aspects of everyday life. Radioactive sources can be very useful but need handling carefully to ensure safety.
Explanation:
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (40pts)
Answer:
Explanation:
According to this site, "The purpose of these curved wingtips is to prevent high air pressure above the airplane from flowing over and under the wings."
Hope this helps!
What do you use to write on a blackboard?
Answer:
Chalk, expo markers. Why?
Answer:
Chalk
Explanation:
please mark as brainliest
A man who has type B blood (genotype: BB) is married to a woman with type O blood. What blood type will their children have? blood typing
The body weighing 8kg moves in a straight line uniformly accelerated with an acceleration of 3m / s? on a horizontal surface, under the action of force 60N.Find a) What is the friction force acting on the body) The coefficient of friction between the body and the surface where it moves
Answer:
pls explain this to me
Explanation:
I will not answer it
both answers are here in the picture
1. Why are the outer planets called “gas planets?”
Answer:
They are also called the gas planets because they consist mainly of hydrogen, or the giant planets because of their size. These planets usually have complicated system of many moons and often even rings of ice and/or dust. There are four Jovian planets in the Solar System: Jupiter, Saturn, Uranus and Neptune.
Answer:
They are also called the gas planets because they consist mainly of hydrogen, or the giant planets because of their size. These planets usually have complicated system of many moons and often even rings of ice and/or dust. There are four Jovian planets in the Solar System: Jupiter, Saturn, Uranus and Neptune.
Explanation:
i hope this helps :)
Question 19 of 20
Planets A and B have the same size, mass, and direction of travel, but planet
A is traveling through space at half the speed of planet B. Which statement
correctly explains the weight you would experience on each planet?
A. You would weigh less on planet B because it is traveling twice as
fast as planet A.
B. You would weigh the same on both planets because your mass
would adjust depending on the planet's speed.
O C. You would weigh more on planet B because it is traveling twice as
fast as planet A.
D. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
SUBMIT
Answer:
D. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
Explanation:
The above statement is true due to the fact that, the weight and masses of the individual are same in direct comparison with the distance to their center of gravity. If the weight and masses are not same, then there would have been a significant difference between the two planet.
The graph show a distance travelled by four cars (A, B, C& D) over a period of time . Which car travelled at a greatest speed? *
Answer:
Car A traveled with the greatest speed.
Explanation:
We know that the steepness of the slope of the line on the distance-time graph represents speed.
Important Tip:
If the slope of the line is more vertical — steep — the speed will be fast.If the slope of the line is more horizontal — flatter — the speed will be slow.For example, at t = 5 seconds, the A car has covered more than 80 meters while all the other cars have covered less than 80 meters during the same period.
IIn fact, during the entire journey, it is clear that from the graph that the slope of the line of A car is more vertical — steep — than the slopes of cars B, C, and D.
Therefore, car A traveled with the greatest speed.
which natural disaster comes from powerful thunderstorms that originate over land
a hurricane
b cyclone
c tornado
d typhoon
Answer:
Typhoons form over landmasses, typically after a period of very warm weather. Desert areas are known to have flash floods. Flash floods are normally widespread over large areas, rising and dissipating slowly. Violent, whirling wind that moves in a narrow path over land, forming a highly destructive funnel is called a .
Explanation:
I hope this helps and pls mark me brainliest :)
The combination of all of the forces acting on an object is called the
A) total force.
B) union of forces.
C) super force.
D) net force.
Answer:
The combination of all of the forces acting on an object is called D. net force
Explanation:
An ambulance siren has a frequency of 650 Hz and is moving away from you at 35 m/s. What frequency will you perceive? Use 346 for the speed of sound.
590 Hz is the answer to the question
An ambulance siren has a frequency of 650 Hz and is moving away from you at 35 m/s. What frequency will you perceive? Use 346 for the speed of sound.
Answer:
59.71 Hz
Explanation:
Frequency: 650 Hz
Velocity: 35 m/s
Speed of sound: 346
f = f(v / v + speed of sound)
f = 650(35 / 35 + 346)
Evaluate and you would perceive a frequency of 59.71 Hz
What is one difference between a total solar and a total lunar eclipse?
A: A solar eclipse happens once every 28 days. A lunar eclipse happens only during a full moon.
B: In a solar eclipse, the sun moves between Earth and the moon. In a lunar eclipse, the moon moves between the sun and Earth.
C: A solar eclipse can be viewed anywhere on Earth. A lunar eclipse can only be seen from the side of Earth facing the moon.
D: In a solar eclipse, it is Earth that is caught in the umbra of the moon. In a lunar eclipse, it is the moon that is caught in the umbra of Earth.
Answer:
Image result for What is one difference between a total solar and a total lunar eclipse?
During a total solar eclipse, the moon passes between Earth and the sun, casting a small, dark shadow on our planet. ... During a lunar eclipse, however, the Earth passes between the moon and the sun, casting its shadow — known as the umbra — onto the moon.
Answer:
D.
Explanation:
RNA is ______________________stranded. It _______________ leave the nucleus, unlike DNA. It still consists of __________________, however the _____________ in the backbone of the strand is different than in DNA.
The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with _____________________.
Answer:
See below
Explanation:
RNA is single-stranded. It does leave the nucleus, unlike DNA. It still consists of strands, however, the ribose in the backbone of the strand is different than in DNA.
The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with Cytosine.
Which shows the correct lens equation?
Answer:
The inverse of f equals the inverse of d Subscript o Baseline plus the inverse of d Subscript I Baseline.
Explanation:
Explanation:
Answer: The answer is most likely the first one, but I may be wrong.
Explanation:
Explain the difference between mass and weight. Also, what happens to your mass and your weight if you were to travel to the moon? Why?
PLEASE HURRY!!
Move the balloon very close to the wall, but don't touch the wall. Then let go. What happens to the balloon?
Answer:
it lets out the air inside the balloon and I´m pretty sure it would hit the wall while the air was being let out.
An apple in a tree has a GPE of 175 J and a mass of 0.36 KG how high from the ground is the apple Solve for  height
Answer:
The height of the apple from the ground is at 49552.61071 m or is approximately at 5.0 × 10 m
Explanation:
Anyone knows this? Please answer... Spam will be reported.
Answer:
The correct option is;
The assertion is correct, but reason wrong
Explanation:
The question is with regards to the relationship between work, energy, power, and velocity
The mass of each of the persons running up the staircase = Different
The time it takes each person to run up the stairs = Equal time
Let, 'm₁' and 'm₂' represent the mass of each of the persons that ran up the stairs and m₁ > m₂
Let 't' represent the equal time it takes then to run up the stairs
Let 'h' represent the height of the stairs
The energy, 'E', it takes to run up the stairs is equal to the potential energy, P.E., obtained at the top of the stairs
P.E. = m·g·h
Where;
m = The mass of the person at an elevated height
g = The acceleration due to gravity = Constant
h = The height reached above ground level
Given that the height reached is the same for both of the persons, we have
For m₁, P.E.₁ = m₁·g·h and for m₂, P.E.₂ = m₂·g·h
Therefore, where, m₁ > m₂, we have;
P.E.₁ > P.E.₂
∴ E₁ > E₂
Power, 'P', is the rate at which energy is expended
∴ Power, P = E/t
∴ P₁ = E₁/t > P₂ = E₂/t
Therefore, the person with the greater mass, 'm₁', uses more power than the person of mass 'm₂', in running up the stairs
Therefore, the assertion is correct
The average velocity, vₐ = (Total distance traveled, d)/(Total time taken, t)
Given that the distance, 'd', covered in running up the stairs by both persons is the same, and the time it takes them to complete the distance, 't', is also the same, we have;
The average velocity of the person with the greater mass m₁ is the same as the average velocity of the person with mass, m₂
Therefore, the reason is wrong
The answer is that the assertion is correct, but reason wrong