Physics help please..............

The most likely reason parents and their children have similar physical traits is that (b) they have similar genetic structures.

Physical traits are largely determined by genes, which are segments of DNA passed down from parents to their offspring. Genetic information contains instructions for the development of various physical characteristics, such as eye color, height, and facial features. Therefore, children inherit genetic variations from their parents that contribute to the similarities in their physical traits.

Genes are responsible for the transmission of hereditary traits, and variations in these genes can result in different physical appearances. Children receive half of their genetic material from their biological mother and the other half from their biological father, leading to a combination of genetic traits from both parents. This genetic inheritance process explains why children often share physical characteristics with their parents, such as hair color or body structure.

While living in the same home and being born in similar environments can influence certain aspects of physical traits, such as lifestyle choices or exposure to certain factors, these factors do not have as direct and significant an impact as genetic inheritance. They may contribute to some environmental influences, but genetic factors are the primary drivers of physical trait similarities between parents and their children.

The similarity in blood types between parents and children is a result of genetic inheritance as well. Blood type is determined by specific genes, and children inherit their blood type alleles from their parents. However, blood type alone does not account for the full range of physical traits shared between parents and children, as it is just one characteristic among many that are determined by genetics.

In summary, while living in the same home and being born in similar environments can have some influence, the primary reason parents and their children have similar physical traits is due to their shared genetic structures. Genetic inheritance is the key factor that determines the passing down of physical characteristics from one generation to the next.

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Sound waves are a type of mechanical wave that propagate through a medium, typically air but also other materials such as water or solids.

Frequency: the frequency of a sound wave refers to the number of cycles or vibrations it completes per second and is measured in Hertz (Hz).

Amplitude: the amplitude of a sound wave refers to the maximum displacement or intensity of the wave from its equilibrium position. It represents the loudness or volume of the sound, with larger amplitudes corresponding to louder sounds and smaller amplitudes corresponding to softer sounds.

Wavelength: the wavelength of a sound wave is the distance between two consecutive points in the wave that are in phase, such as from one peak to the next or one trough to the next. It is inversely related to the frequency of the wave.

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The extension in the string when the particle hangs in equilibrium is e = mg/k. The constant n in the equation of motion is n = (2π/T)²m. The time it takes for the particle to enter simple harmonic motion is t = √(2§/g).

To find the extension in the string when the particle hangs in equilibrium, we need to consider the forces acting on the particle. The weight of the particle is mg, acting vertically downward. The tension in the string exerts an equal and opposite force, mg, to balance the weight. Since the particle is in equilibrium, the total force acting on it is zero.When the particle is dropped from a point below O, it will stretch the string due to its weight. Let's denote the extension of the string as e. The tension in the string will now be greater than mg because it needs to support the weight of the particle and provide the necessary centripetal force for the simple harmonic motion.The extension in the string is given by Hooke's law: F = kx, where F is the force, k is the modulus of the string, and x is the extension. In this case, the force is the tension in the string, and the extension is e. Thus, we have mg = ke. Rearranging the equation, we get e = mg/k.

To find the constant n in the equation of motion, › = -n?, we can use the fact that the period of simple harmonic motion is given by T = 2π√(m/k), where m is the mass of the particle and k is the spring constant. Comparing this with the equation of motion, we see that ω² = n/m. Since ω = 2π/T, we can substitute ω in terms of T and solve for n: n = (2π/T)²m.

To determine when the particle enters simple harmonic motion, we need to find the time it takes for the string to reach its equilibrium position. Since the particle is dropped from a point § meters below O, it will accelerate towards the equilibrium position due to the tension in the string. The time taken for this free-fall motion can be calculated using the equation of motion for constant acceleration: § = ½gt². Solving for t, we get t = √(2§/g).The amplitude of the simple harmonic motion is equal to the maximum displacement from the equilibrium position. In this case, the maximum displacement is equal to the initial dropped distance, § meters.To determine the time it takes for the particle to come to instantaneous rest for the first time, we need to find the time period of the simple harmonic motion. The time period, T, is given by T = 2π√(m/k). To find the time it takes to come to rest, we need to consider half of the time period, T/2.The amplitude of the simple harmonic motion is equal to the initial dropped distance, § meters. The time it takes for the particle to come to instantaneous rest for the first time is T/2, where T is the time period of the simple harmonic motion.

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Answer:

-12.1

Explanation:

i’m almost sure this is it, i’m checking my old answers

if not let me know and i’ll give you some more answers

Answer:

Explanation:

It's graph A because the pressure in the tire is increasing as the amount of air going into it increases. B says the pressure drops exponentially as air goes in, and C says that the pressure stays the same as air goes in. Pressure in a tire increases proportionally to the amount of air in it.

Answer: it would take 4 seconds

Explanation:

Answer:

The horizontal range of the cannonball is 9180.4 meters.

Explanation:

The horizontal range of a cannonball can be calculated using the following formula:

range = (speed * speed * sin (2 * angle)) / acceleration due to gravity

In this case, we are given that the cannon is fired at an angle of 45 degrees and that the speed of the ball is 300 m/s. We can plug these values into the formula to calculate the horizontal range of the ball:

range = (300 * 300 * sin (2 * 45)) / 9.8

= (90000 * sin (90)) / 9.8

= (90000 * 1) / 9.8

= 9180.4 m

Answer: 6.45 m/s

Explanation:

Find out the time value

3 = 1/2*a*T^2

6/10 = t^2

t = 0.77 seconds

and the distance is given as 5 m

thus speed,= distance/time.

Putting values,

speed = 5/0.77

= 6.45 m/s

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The acceleration due to gravity is the acceleration gained by an object due to gravitational force.

The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. Its vector nature which includes both magnitude and direction makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on earth's surface is 9.8 m/s².

The distance a body's entire mass can be concentrated without changing its moment of rotational inertia about an axis through its center of mass is known as the radius of gyration.

Note that your information was incomplete and an overview was given.

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Answer:

If 99.995 A  pass thru a shunt and 5 mA pass thru the meter, the meter will have full scale deflection for a current of 100 A.

By Ohm's Law  

99.995 Rs = .005 Rm

Rs = .005 / 99.995 * 120

Rs = .006 ohms

Using a shunt resistance of .006 Ω will produce the required result.

The value of the shunt resistor should be very low to divert most of the current, use a shunt resistor with a value of 0.0012 ohms.

The value of the shunt resistor (Rs) is:

Rs = (Rm × Im) ÷ (If - Im)

where:

Rs = Shunt resistor value

Rm = Resistance of the milliammeter

Im = Full-scale current of the milliammeter

If = Maximum current we want to measure

The shunt resistor value:

Rs = (120 × 5 ) ÷ (100  - 5)

Rs = (0.12 ) ÷ (100 - 0.005)

Rs = 0.12 ÷ 99.995

Rs = 0.00120018 ohms

Since the value of the shunt resistor should be very low to divert most of the current, use a shunt resistor with a value of  0.0012 ohms.

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12. The time taken for the journey is 400 s

13. The time taken for the train is 200 s

14. The time taken is 7 h

15. The time taken for the beetle is 12 s

16. The time taken for the journey is 0.0068 h

The time taken in each case as given by the question can be obtain as follow:

12. The time taken for the journey

Time taken = Distance / Speed

Time taken = 26000 / 65

Time taken = 400 s

13. The time taken for the train

Time taken = Distance / Speed

Time taken = 3200 / 16

Time taken = 200 s

14. The time taken to travel

Time taken = Distance / Speed

Time taken = 672 / 96

Time taken = 7 h

15. The time taken for the beetle

Time taken = Distance / Speed

Time taken = 1.08 / 0.09

Time taken = 12 s

16. The time taken for the journey

Time taken = Distance / Speed

Time taken = 35 / 5147

Time taken = 0.0068 h

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The distance from O to S is 64.5 m.

(a) The force acting on the particle P can be found using Newton's second law, which states that the net force on an object is equal to its mass times its acceleration. In this case, the acceleration is the time derivative of the velocity:

−→a = d−→v/dt = 6−→i + (2t+3)−→j (m/s^2)

The net force is therefore:

−→F = m−→a = 0.4(6−→i + (2t+3)−→j) = 2.4−→i + (0.8t+1.2)−→j (N)

At t = 4 s, we have:

−→F = 2.4−→i + (0.8(4)+1.2)−→j = 2.4−→i + 4.8−→j

The magnitude of the force is:

|−→F| = √(2.4^2 + 4.8^2) = 5.34 N (rounded to two decimal places)

Therefore, the magnitude of the force when t = 4 s is approximately 5.34 N.

(b) The displacement vector from O to S is:

−→OS = −→OP + −→PS

where −→OP = −3−→i + 4−→j (given) and −→PS is the displacement vector from P to S. We can find −→PS by integrating the velocity vector from t = 0 to t = 4:

−→PS = ∫(6t+4)−→i + (t^2+3t)−→j dt = [(3t^2+4t)−→i + (1/3)t^3+(3/2)t^2] from 0 to 4

−→PS = 44−→i + 46.67−→j (m)

Therefore,

−→OS = −3−→i + 4−→j + 44−→i + 46.67−→j = 41−→i + 50.67−→j (m)

The distance |−→OS| is:

|−→OS| = √(41^2 + 50.67^2) = 64.5 m (rounded to one decimal place)

Therefore, the distance from O to S is approximately 64.5 m.

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Answer:

Acceleration of the body is:

\(a=0.27\,\,m/s^2\)

Explanation:

Use Newton's second Law to solve for the acceleration:

\(F=m\,\,a\\a=\frac{F}{m} \\a=\frac{4\,N}{15\,\,kg} \\a=0.27\,\,m/s^2\)

The fictional people and circumstances in realistic literature are meant to represent our society and reality. Growing up and facing personal and societal issues are the main topics.

In a word, the primary distinction between fiction and non-fiction is that fiction is the product of imagination, whereas non-fiction is entirely founded on facts and truth. To better grasp the two genres, let's now get in-depth with them.

While it may be based on a factual tale or circumstance, fiction is literature that was formed from the author's imagination and is not meant to be taken seriously as truth. Novels, short stories, and novellas are examples of literature in the fiction category.

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Time needed = t = 20.83 s

Given

car speed = 85 km/h

truck speed = 73 km/h

Required

the time it takes for the car to reach the truck

Solution

When the car reaches the truck, the distance between them will be the same

x car - 250 m = x truck

General formula for distance (d) :

d = v.t

So the equation becomes :

85t-250 = 73t

12t=250

t = 20.83 s

Answer: A 1:1

Explanation:

They both have a magnitude of 1.6 x 10^-19 C.

The ratio of the magnitude of the charge of a proton compared to the magnitude of the charge on an electron is 1:1 option (A) is correct.

It is a basic unit of matter everything is made from the atom. It consists of three small particles in it named electron, proton, and neutron. The electron has a negative charge, a proton has a positive charge, and a neutron has no charge.

We know the charge on the proton:

\(\rm Q_p = 1.6 x 10^{-19} \ C\)

And charge on the electron:

\(\rm Q_e = -1.6 x 10^{-19} \ C\)

The absolute value of charge on the electron:

\(\rm |Q_e| = 1.6 x 10^{-19} \ C\)

\(\rm \dfrac{\rm Q_p} {\rm |Q_e| }= \dfrac{1.6 x 10^{-19}}{ 1.6 x 10^{-19}}\)

= 1:1

Thus, the ratio of the magnitude of the charge of a proton compared to the magnitude of the charge on an electron is 1:1 option (A) is correct.

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Answer:

\(V = IR\)

Explanation:

Required

Which equation represents ohm's law?

Literally, ohm's law implies that current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R).

Mathematically, this can be represented as:

\(I\ \alpha\ \frac{V}{R}\)

Convert the expression to an equation

\(I\ =\ \frac{V}{R}\)

Multiply both sides by R to make V the subject

\(I\ * R\ =\ \frac{V}{R} * R\)

\(I\ * R\ =V\)

Reorder

\(V = I\ * R\)

\(V = IR\)

Option (a) is correct; Others are not

Answer:

V=ir

Explanation:

Ohm's law deals with the relation between voltage and current in an ideal conductor. It states that: Potential difference across a conductor is proportional to the current that pass through it. It is expressed as V=IR. The correct answers from the choices are:

v = ir

Answer:

A spring is used to launch a ball vertically in to the air. the spring has a spring constant of 200 N/m and is compressed by 5 cm.A ball of mass 10 g is placed just above the spring.Calculate [A]the energy stored in the spring [B] assuming the spring transfers all of its energy to the ball,the velocity of the ball just as it launches [C] the height reached by the ball assuming all the Ek is converted in to GPE

Explanation:

Elastic energy = gravitational energy

½ kx² = mgh

h = kx² / (2mg)

h = (200 N/m) (0.05 m)² / (2 × 0.010 kg × 9.8 m/s²)

h = 2.55 m

Answer:

Explanation:

F = ma so filling in:

60.0 = 4.50a and

a = 13.3 m/s/s

Answer:

Antarctica is a desert. It does not rain or snow a lot there. When it snows, the snow does not melt and builds up over many years to make large, thick sheets of ice, called ice sheets. Antarctica is made up of lots of ice in the form of glaciers, ice shelves and icebergs.

Answer:

"0.049 W" is the correct answer.

Explanation:

According to the given question,

\(r = \sqrt{(3.5)^2+(2.5)^2}\)

  \(=\sqrt{8.5}\)

\(SL=85\)

As we know,

⇒  \(SL=10 \ log(\frac{I}{I_o} )\)

     \(85=10 \ log(\frac{I}{10^{-12}} )\)

      \(I=3.162\times 1^{-4} \ W/m^2\)

Now,

⇒  \(P_{front} = I(2\pi r^2)\)

               \(=(3.162\times 10^{-4})(2\pi\times 18.5)\)

               \(=0.0368 \ W\)

               \(=0.75 \ P\)

or,

                \(=0.049 \ W\)

The magnitude of the resultant of the two vectors when the position of vector A is known is \(R = \sqrt{92.25 - 90 cos(\theta)} \ \ \ units\).

The given parameters;

The resultant of the two vectors is calculated by applying parallelogram law as shown below;

\(R^2 = a^2 + b^2 - 2ab \ cos(\theta)\\\\R^2 = (6)^2 + (7.5)^2 - 2(6 \times 7.5) cos(\theta)\\\\R^2 = 92.25 - 90 cos(\theta)\\\\R = \sqrt{92.25 - 90 cos(\theta)}\)

Thus, the magnitude of the resultant of the two vectors when the position of vector A is known is \(R = \sqrt{92.25 - 90 cos(\theta)} \ \ \ units\).

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A. Keith appears to have a Type A personality. He is highly organized and has a strong desire for structure and order, which is evident from his insistence on following the project templates.

He also seems to be somewhat inflexible in his approach to the project, which can be seen from his unwillingness to consider alternative ideas and his "my way or the highway" attitude. Additionally, his need to recharge after social interactions indicates that he may be introverted.

B. Openness: 3, Conscientiousness: 5, Extraversion: 2, Agreeableness: 2, Neuroticism: 3.

C. Keith demonstrates high conscientiousness, as he is organized, methodical, and committed to completing the project.

He is less agreeable, as he appears to be unwilling to consider alternative ideas and can be inflexible in his approach.

Keith's introversion is consistent with his need to recharge after social interactions, and he does not exhibit high levels of extraversion.

Finally, while he does not seem to be anxious about the project deadline, he also does not exhibit high levels of neuroticism.

Overall, Keith's personality seems to be consistent with the Type A personality, which is characterized by high levels of conscientiousness and a need for structure and order.

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Researching information

Explanation: Edge 2020

hope this helps :3. pls mark me brainiest Brainliest

Answer:

It is C.

Explanation:

Got it right on edge.

The density of water at STP, which is \(997 kg/m^3\), we can see that Saturn is less dense than water.

To determine whether Saturn is less dense than water, we must compute its density and compare it to the density of water at standard temperature and pressure (STP), which is \(997 kg/m^3\).

Saturn's density can be computed using the following formula:

density equals mass divided by volume

Saturn's mass and volume may be computed given its mass and radius.

The volume of Saturn can be determined using the sphere volume formula:

volume =\((4/3) \pi (r^3)\)

where r is Saturn's radius.

Filling in the blanks:

volume = \((4/3) \pi (5.6 \times 107) m^3\)

8.27 x 1023 \(m^3\)volume

Saturn's mass is given as \(5.68 \times 10^{26} kg.\)

We can now compute Saturn's density:

density equals mass divided by volume

density= \((5.68 x 10^{26 }kg\)) /\((8.27 \times 10^{23 }\)m³) a density of\(687 kg/m^3\)

This is due to the fact that Saturn is mostly made up of hydrogen and helium, which are far less dense than water. In reality, Saturn is the least dense planet in the Solar System, and it would float in a large enough body of water.

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Answer:

Light can act as a wave or a particle. This is called light wave-particle duality, simply that the light has both the characteristics of fluctuations, but also has the characteristics of particles. Light can propagate forward like a wave, and sometimes show the characteristics of particles.

Metal is not heat resistant and therefore it is not a good heat shield. For example pots are made out of metal because they are good conductors of heat.

Light is said to be the fastest, it is because we have not discovered anything faster than light. If someone discover's something faster than light then that will become the fastest. It is not that we have tried hard enough, it is just that our technology, research and veiw of outer space is limited. Implementing good research and technology requires a lot of money, time and expertise. We have much better things to do than to discover something faster then light because even if it's discovered what can we do with it, with our severe lacking research and technology, it's practically useless and good as updating some newspaper articles. When even light can give us a headache.

Dark matter, antimatter, dark energy and degenerate matter can be said to be different. I'm not sure about the intricasies but all have different energy frequencies and effects. Not sure but please do research about it.

Hope this helps you.

Answer: 207 W

Explanation: I assumed here that the object is moved vertically. If that is the case, the work done on the object is equal to its change in gravitational potential energy:

where

m = 47 kg is the mass of the object

g = 9.8 m/s^2 is the acceleration of gravity

is the change in height

Substituting,

Now we can calculate the power used, which is given by

Hope this helps I'm sorry if i'm wrong but I tried :(

The magnitude of the resultant force, F = 1,190.3 acting at a direction X = 13.35°.

The resultant force on the rocket is calculated thus:

The 513N thrust is resolved into vertical and horizontal components;

Horizontal component: 513N cos(32.4°) = 433.14 N

Vertical component: 513N sin(32.4°) = 274.88 N

Total forward force on the rocket = 725 N + 433.14 N = 1,158.14 N

Total force at right angles:

0 + 274.88 N = 274.88 N

The resultant force (F) is then given as follows:

F² = a² + b²

F² = (1158.14 N)² + (274.88 N)²

F = √1,416,847.27

F = 1,190.3

To find the direction:

tan X 274.88 N / 1,158.14 N

X = tan⁻¹ 0.237346089419241

X = 13.35°

Therefore, the magnitude of the resultant force, F = 1,190.3 acting at a direction X = 13.35°.

In conclusion, the resultant force is obtained by resolving the forces into vertical and horizontal components.

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Answer:

Pulse transfers a single disturbance, while wave is a continuous disturbance that transfers energy.

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Answer:

1176 Nm or J

Explanation:

W = F*d

F = 60kg * 9.8 kgm/s^2 = 588 N

W = 588 N * 2m = 1176 N*m

The formula for calculating work is Work = Force Distance. The SI unit for work is the joule (J) or Newton meter (N m). One joule is the amount of work done when one Newton of force moves a one-meter object.

1176 N × m = work

When energy is transferred from one store to another, work is performed. When a force causes an object to move, work is done.

W = F.d

F = 60kg × 9.8 kgm/s²= 588 N

W = 588 N × 2m = 1176 N × m.

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