Answer:
When a sound source moves faster than the speed of sound, a shock wave is produced as the sound waves interfere. A sonic boom is the intense sound that occurs as the shock wave moves along the ground.
More importantly, all of the energy gets concentrated into a very small distance this is called a shock wave. In this case, the observer does not hear the approaching source at all until the shock wave hits with all of the energy in the wave. For sound waves, this can cause a very loud noise, called a sonic boom.
Sonic booms produced by aircraft flying supersonic at altitudes of less than 100 feet, creating between 20 and 144 pounds overpressure, have been experienced by humans without injury. Damage to eardrums can be expected when overpres- sures reach 720 pounds
Explanation:
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Rock candy is made from crystallized sugar. What is crystallization?
Answer: Rock candy is candy made of large sugar crystals. To make rock candy, a supersaturated solution of sugar in water is created and left undisturbed for a few days. The driving force behind crystallization is supersaturation.
The diagrams show four bodies moving in the directions shown. The only forces acting on the bodies are shown in each diagram.
Which body gains the most kinetic energy when moving a distance of 1.0m ?
Answer:
C - the greatest net force is on c with 25N - 10N = 15N
a = F / M
a = (v2 - v1) / t so C has the greatest acceleration and will reach the greatest velocity
KE = 1/2 M v^2
The diagrams show four bodies moving in the directions shown. The only forces acting on the bodies are shown in each diagram. The option C body gains the most kinetic energy when moving a distance of 1.0m.
What is kinetic energy?When some amount of force is applied on a object it can store a energy in that object. That is the kinetic energy. Mathematically the mass of the object and its change in acceleration in that object makes the kinetic energy. It is a vector quantity.
How can we calculate the kinetic energy?
To calculate the kinetic energy we are using the formula,
U= (1/2)mv²
U = (1/2) ma²t²
Or, U= (1/2)ma × at²
Or, U= F × (1/2)at²
From this calculation we can see that if there is more force applied on a body that generates more kinetic energy on that object.
According to the question ,
Force of the object of Option A has (F) = f₂ - f₁
= (20 - 10)
= 10N
Force of the object of Option B has (F) = 10N
Force of the object of Option C has (F) = f₂ - f₁
=(25-10)= 15N
Force of the object of Option D has (F) = f₂ - f₁
= (30-30)
= 0N
According to the question, option C has the most amount of force and we know the more force generate the more kinetic energy. So it has the more kinetic energy.
We can easily say that, The option C body gains the most kinetic energy when moving a distance of 1.0m
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What’s the weight of an object on Earth with a mass of 230 kg?
The weight of an object on Earth with a mass of 230 kg is 2256.3 newtons (n).
What is weight?The weight of an object is the force acting on the object due to the acceleration of gravity. It is defined as the vertical force experienced by a mass as a result of gravitation.
Weight is obtained from the product of mass and acceleration due to gravity (g). The object gets accelerated due to gravity when the object is in free fall. The value of g is 9.8 m/s².
From the given,
mass of an object = 230 kg
weight of an objcet=?
weight (w) = m×a, where m is the mass of the object and the unit of mass is the kilogram, a is the acceleration due to gravity and its unit is m/s², and w is the weight of the object and the unit of weight is Newton.
w = m×a
= 230×9.81
= 2256.3 N
w = 2256.3 N
Thus the weight of an object is 2256.3 N.
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A 0.37 kg rock is thrown vertically upward from the top of a 37 m
cliff. When it hits the ground at the base of the cliff, the rock has a
speed of 33 m/s. Consider that air resistance is negligible. Use
conservation of total mechanical energy principle to find
a. The initial speed of the rock.
b. The greatest height of the rock as measured from the base of the
cliff.
c. Comment on the types of mechanical energy of the rock when
i) it is thrown upward, ii) it reached the maximum height, and
iii) it reached the base of the cliff.
(a) The initial speed of the rock is 19.1 m/s.
(b) The greatest height of the rock as measured from the base of the
cliff is 55.6 m.
(c) i. As the ball is thrown up, its kinetic energy is converted to potential energy.
ii. When then ball reaches the maximum height, its kinetic energy becomes zero and it will have maximum potential energy.
iii. When the rock reaches the base of the cliff, its potential energy becomes zero and it will have maximum kinetic energy.
Conservation of mechanical energyThe initial speed of the rock is determined by applying the principle of conservation of mechanical energy as shown below;
Ui + K.Ei = Uf + K.Ef
mghi + ¹/₂mvi² = mghf + ¹/₂mvf²
(0.37 x 9.8 x 37) + ¹/₂(0.37)vi² = (0.37 x 9.8 x 0) + ¹/₂(0.37 x 33)²
134.16 + 0.185vi² = 0 + 201.47
0.185vi² = 201.47 - 134.16
0.185vi² = 67.31
vi² = 67.31/0.185
vi² = 363.84
vi = √363.84
vi = 19.1 m/s
Height reached by the rock from top cliffvf² = vi² - 2gh
0 = vi² - 2gh
2gh = vi²
h = vi²/2g
h = (19.1)²/(2 x 9.8)
h = 18.6 m
Maximum height reached by rock from the base of the cliffThe maximum height from the base = 37 m + 18.6 m = 55.6 m
When the ball is thrown up, its kinetic energy is converted to potential energy.
When then ball reaches the maximum height, its kinetic energy becomes zero and it will have maximum potential energy.
When the rock reaches the base of the cliff, its potential energy becomes zero and it will have maximum kinetic energy.
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If a 6.0 kg bowling ball is rolled with a velocity of 3.5 m/s, what is the momentum of the ball?
Answer:
Answer: simple h. momenta=6.0*3.5. =21.0.
Explanation:
50 points, absurd answers will be reported if there are no answer content
Answer:
Angular momentum increases and gravitational potential energy decreases after the bug lands.
Explanation:
After the bug lands, the rod begins to rotate. As the system was at rest before, when it begins to rotate, its angular momentum increases from zero to positive.
As the rod begins to rotate, the heavier mass of bug and sphere goes down while the lighter mass of sphere goes up. So the system's gravitational potential energy decreases.
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draw a Lewis dot structure for Hf
Answer:
There!!
Explanation:
mark me brainliest!!
50 points if you want it
Answer:
Angular momentum increases and gravitational potential energy decreases after the bug lands.
Explanation:
After the bug lands, the rod begins to rotate. As the system was at rest before, when it begins to rotate, its angular momentum increases from zero to positive.
As the rod begins to rotate, the heavier mass of bug and sphere goes down while the lighter mass of sphere goes up. So the system's gravitational potential energy decreases.
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Which two aspects of sound go together?
A. amplitude and pitch
B. pitch and frequency
C. decibels and pitch
D. pitch and volume
Which two aspects of sound go together?
Pitch and frequencyPitch and frequency are two aspects of sound that go together. Pitch means Higness or Lowness of sound. Frequency is the measurement of the number of times that a repeated event occurs per unit of time...~
Answer:
B
Explanation:
B, because pitch and sound produce high- and low-pressure disturbances of the particles of the air at a given frequency, the ear has an ability to detect such frequencies and associate them with the pitch of the sound.
The axial tilt of the Earth causes:
A. The division of Earth into different time zones.
B. Different seasons in the hemispheres during the same time of year.
C. The Earth to rotate at 15 degrees per hour.
D. Prevailing winds to move northerly in a clockwise direction.
Answer:
B. Different seasons in the hemispheres during the same time of year.
Explanation:
The seasons are caused by the tilted axis of the Earth.
Calculate the fuel efficiency of a vehicle that can travel 350 km using 20 L of gasoline. Include units in your answer.
I got 17.5kmpl and the system said it was wrong. Please help!!
The fuel efficiency of the vehicle is 5.71%.
Fuel efficiency of the vehicleThe fuel efficiency of the vehicle is determined from the ratio of volume of fuel used to the total distance traveled.
Distance traveled by the vehicle = 350 km
Volume of fuel used = 20 L
Fuel efficiency of the vehiclee = (20 / 350) x 100
e = 5.71%
Thus, the fuel efficiency of the vehicle is 5.71%.
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Answer: 17.5
Explanation:
1. i did the same problem and got it right
2. you don't do "kmpl" but rather you have to do "km/l" which represents the kilometers over the liters
The carbon atom has an atomic number of 6 and its atomic mass number is 12.
How many neutrons does the carbon atom have?
Answer:
If it has 12 nucleons and 6 of them are protons the other six must be neutrons (6).
How do plants recycle carbon during photosynthesis?
A.) The carbon in glucose is recycled as carbon gas.
B.) The carbon in glucose is recycled as carbon dioxide.
C.) The carbon in carbon gas is recycled as glucose.
D.) The carbon in carbon dioxide is recycled as glucose.
I Need this answer in 5 MINUTES!
Answer:
= D.) The carbon in carbon dioxide is recycled as glucose.The plants recycle carbon during the process of photosynthesis by the carbon in the carbon dioxide is recycled as glucose. Hence, option D is correct.
What is Photosynthesis?Photosynthesis is the conversion of light energy to electrical energy in green plants and several other organisms. Green plants employ light energy during photosynthesis to convert water, carbon dioxide, and mineral into oxygen- and energy-rich organic molecules.
Photosynthesis is essential to the preservation of life on Earth, and its significance cannot be overstated. The amount of food and other organic materials on Earth would quickly decline if photosynthesis stopped. The majority of life forms would vanish, and eventually the atmosphere of Earth would be that few of gaseous oxygen.
The only organisms that might survive in such an environment would be chemosynthetic bacteria, which can use the hydrogen gas of specific inorganic materials and are not reliant on the conversion of light energy.
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A very long line of charge with charge per unit length +8.00 μC/m is on the x-axis and its midpoint is at x = 0. A second very long line of charge with charge per unit length -4.00 μC/m is parallel to the x-axis at y = 14.0 cm and its midpoint is also at x = 0.
At what point on the y -axis is the resultant electric field of the two lines of charge equal to zero?
The point on the y -axis in which the resultant electric field of the two lines of charge equal to zero is 5.5 cm.
Electric field due to each line
The electric field due to each line is calculated as follows;
[tex]E = \frac{kq}{r^2}[/tex]
where;
q is charge r is the distancek is Coulomb's constantIn the question, we were given charge per unit length instead of charge.
Since the midpoint of two lines are same, can assume that they are equal.
Hence, the total charge in each line will be;
q1 = q1Lq2 = q2LAt a zero resultant electric field;
[tex]E_1 = E_2\\\\E_1 + E_2 = 0\\\\\frac{kq_1}{r_1^2} = \frac{kq_2}{r_2^2}[/tex]
Let the position on y p axis = n
[tex]\frac{K (8 \ \mu C/L)\times L}{(n - 0)^2} + \frac{K(-4\ \mu C/L) \times L}{(0.14 - n)^2} = 0\\\\\frac{K(8\mu C)}{(n)^2} - \frac{K(4\mu C)}{(0.14- n)^2} = 0\\\\\frac{K(8\mu C)}{(n)^2} = \frac{K(4\mu C)}{(0.14- n)^2} \\\\\frac{8}{n^2} = \frac{4}{(0.14 - n)^2} \\\\4n^2 = 8(0.14 - n)^2\\\\4n^2 = 8(0.02 -0.28n - n^2) \\\\4n^2 = 0.16 - 2.24 n - 8n^2\\\\ 12n^2+ 2.24n - 0.16 = 0\\\\a = 12, \ b = 2.24, \ c = -0.16\\\\n = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a} \\\\[/tex]
[tex]n = \frac{-2.24\pm \sqrt{(2.24)^2 - 4(12)(-0.16)} }{2(12)} \\\\n = 0.055 \ m\\\\n = 5.5 \ cm[/tex]
Thus, the point on the y -axis in which the resultant electric field of the two lines of charge equal to zero is 5.5 cm.
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How do we turn uranium into electrical energy we can use (describe the power plant)?
Answer:
Nuclear Power Plant
Explanation:
Heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plant. At the center of the reactor is the core, which contains uranium fuel.
Which of this following value on the absolute scale of temperature is to the point
Answer:
D
Explanation:
because the correct answer is D
Which statement best describes what happens when people declare bankruptcy?
1. Some of their debts can be eliminated, and loan terms are renegotiated with lenders.
2. All of their debts are eliminated, and they are given a fresh start.
3. All of their debts are eliminated, but they have to sell their assets, such as their homes.
4. Some of their debts can be eliminated, but they must agree not to take on more debt.
1. Some of their debts can be eliminated, and loan terms are renegotiated with lenders.
2. All of their debts are eliminated, and they are given a fresh start.
3. All of their debts are eliminated, but they have to sell their assets, such as their homes.
D took the test UWU
The statement is all of their debts are eliminated, but they have to sell their assets, such as their homes. Option (c) is correct.
What is bankruptcy?During the legal process of bankruptcy, individuals or other entities that are unable to pay their creditors back can seek partial or complete relief from their debts. Bankruptcy is typically imposed by a court order that is frequently requested by the debtor.
An opportunity to start all over is provided through bankruptcy by wiping off uncontrollable debts. In the meanwhile, creditors may be able to receive some payment based on the person or company's liquidate assets.
Declaring bankruptcy should help the economy as a whole by giving individuals and business organizations another chance to recover financially. It may also assist persons in recovering some loan repayment.
Therefore, Option (c) is correct.
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Behavioral responses in organisms require communication between
Which describes a feature of the physical changes of all substances?
Answer:
A change in size, shape, or matter.
Explanation:
A physical change does not produce new substances. A physical change may only change the physical properties of a substance. a change in size, shape, or phase of matter.
Answer: It does not change the identity of a substance
Explanation:
In astronomy, distances are often expressed in lightyears. One lightyear is the distance that light travels in one Earth year. The distance to Alpha Centauri, the next closest star, is 4.3 lightyears away. How far is this in meters?
Answer is ...
Happy to help ..
A force of 345 N is applied to a 70 kg scooter. What will the scooter's
acceleration be?
Explanation:
here, force applied (N) = 345 N
or, mass of scooter (m) = 70 kg
now, acceleration (a) = ?
we know, force = mass × acceleration
or, 345 = 70 × acceleration
or, acceleration = 345/70
therefore, acceleration = 4.9 m/s2 (meter/second square)
A Wave with a Frequency of 500 Hz is travelling at Speed of 200 m^-1 . What is its Wavelength ?
Question :-
A Wave with a Frequency of 500 Hz is travelling at Speed of [tex] \bf {200 \: m ^{-1}} [/tex] . What is its Wavelength ?Answer :-
Wavelength of the Wave is 0.4 m .[tex] \rule {180pt} {2pt} [/tex]
Given :-
Frequency = 500 HzSpeed = [tex] \bf {200 \: m ^{-1}} [/tex]To Find :-
Wavelength = ?Solution :-
As per the provided information in the given question, we have been given that the Frequency of the Wave is 500 Hz . Its Speed is given [tex] \bf {200 \: m ^{-1}} [/tex] . And, we have been asked to calculate the Wavelength .
For calculating the Wavelength , we will use the Formula :-
Wavelength = Speed / FrequencyTherefore , by Substituting the given values in the above Formula :-
⇒ Wavelength = 200 / 500
⇒ Wavelength = 2 / 5
⇒ Wavelength = 0.4
Hence :-
Wavelength = 0.4 m[tex] \underline {\rule {180pt} {4pt}} [/tex]
what does odometer of a vehicle measure ?
Answer:
The odometer registers the distance traveled by the vehicle; it consists of a train of gears (with a gear ratio of 1,000:1) that causes a drum, graduated in 10ths of a mile or kilometre, to make one turn per mile or kilometre.
Explanation:
hope it helps
a girl of whose mass is 50kg carries a box of mass 20kg high.she take 16s to climb up the steps (take g=10m/s^2). what is her weight?
Explanation:
[tex]w = m.g[/tex]
[tex]m =70 \\ g = 10[/tex]
70x10=700N
The graph represents the force applied on an 3.00kg crate while it moved 5.0m. A. How much total work is done on the crate? B. If the ball was moving at 6.00m/s when the force was first applied, what is its final velocity?
a. We can calculate the amount of work by calculating the area under the graph.
first area (rectangular): 2.5 x 6 = 15
second area(trapezoid): 1/2 x (6+10) x 2.5 =20
total work done: 35 J
b. the force was first applied = 6 N
F = m.a
a = 6 : 3 = 2 m/s²
vf²=vi²+2as
vf²=6²+2.2.5
vf²=56
vf=7.5 m/s
define Brownian motion
Answer:
Brownian motion, or pedesis, is the random motion of particles suspended in a medium.
Explanation:
of motion typically consists of random fluctuations in a particle's position inside a fluid sub-domain,
Answer:
The erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium is called Brownian motion. Hope it helps you.
HELP PLEASE Which of the following is a true statement?
All organisms in an ecosystem eat decomposers to survive.
All organisms in an ecosystem eat decomposers to survive.
All organisms rely on photosynthesis, which is done by decomposers.
All organisms rely on photosynthesis, which is done by decomposers.
All organisms generate waste and dead material that is recycled by decomposers.
All organisms generate waste and dead material that is recycled by decomposers.
All organisms are considered decomposers in aquatic ecosystems since all organisms are underwater.
Answer: All organisms generate waste and dead material that is recycled by decomposers.
Explanation: Give me brainiest!
write the standard of 1 metere
Let's see
[tex]\\ \rm\Rrightarrow 1metre= 10^2cm[/tex]
[tex]\\ \rm\Rrightarrow 1m=10^3mm[/tex]
[tex]\\ \rm\Rrightarrow 1m=10^6\mu m[/tex]
[tex]\\ \rm\Rrightarrow 1m=10^{-3}km[/tex]
[tex]\\ \rm\Rrightarrow 1m=10^{9}nm[/tex]
PLEASE HELP ME !! STUCK ON THIS!
Which choice describes the purpose of the blades in a wind turbine?
A) The blades convert wind energy into rotational energy.
B) The blades include a gearbox and a generator.
C) The blades create charges inside an electromagnet.
D) The blades provide structural support to the turbine.
Answer:
A is the basis for all of the other assumptions.
Everything else supports A.
Answer:
A) The blades convert wind energy into rotational energy.
Explanation:
Wind turbines use blades to collect the wind's kinetic energy. Wind flows over the blades creating lift (similar to the effect on airplane wings), which causes the blades to turn. The blades are connected to a drive shaft that turns an electric generator, which produces (generates) electricity.
A 5.0 kg book is lying on a 0.25 meter high table.
You pick it up and place itn on a bookshelf 1.85 m above the floor.
During this process:
a.) How much work does your hand do on the book? J
(round to the nearest full joule)
Answer:
Below in the picture:-
I hope it helps.