A force is applied to a 1 kg mass and produces
4.1 m/s
2
acceleration.
What acceleration would be produced by
the same force applied to a 13.4 kg mass?
Answer in units of m/s
2
.

Sound waves are emitted from the surface of the ocean and travel through the water at 1490 m/s, with a wavelength of 15m. The frequency of the sound waves as they travel to the bottom of the ocean is 99.33Hz.

The pattern of disruption brought on by energy moving away from the sound source is known as a sound wave. Longitudinal waves are those produced by sound. This indicates that the direction of energy wave propagation and the particle vibrational propagation are parallel. The atoms oscillate when they are put into vibration. A high-pressure and a low-pressure zone are created in the medium as a result of this constant back and forth action. Compressions and rarefactions, respectively, are terms used to describe these high- and low-pressure zones. The sound waves go from one medium to another as a result of these regions being transmitted to the surrounding media.

Using the formula:

v = n×λ

where,

v is the velocity of sound wave and,

λ is the wavelength.

Substituting the values and solving for frequency:

n = 99.33Hz

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Vector diagram B will result in the largest resultant vector. Correct option is B.

Vector is a mathematical quantity which has both magnitude as well as direction. Force, displacement, velocity & acceleration etc. are the examples of vectors. Vectors are denoted by a standard letter and an arrow upon it.

The resultant(R) of two vectors R1 and R2 having angle θ between them are given by,

R² = R₁² + R₂² + 2R₁R₂cosθ

A) in this diagram single vector is there,

so R = R₁

B) in this diagram two vectors are in same direction with zero angle between them. (Cos0 = 1)

R² = R₁² + R₂² + 2R₁R₂

C) & D) In these diagrams two vectors are in opposite direction with zero angle between them. (Cos180 = -1)

R² = R₁² + R₂² - 2R₁R₂

Looking at B Two vectors will be added each other and give largest resultant vector.

Hence Option B is correct.

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1) The wavelength of the sound wave is 11cm.

2) The frequency of the sound wave is 3118.18.

3) The length of the air column is 35.75cm.

What is frequency and its unit?

The quantity of full oscillations made by any wave element in a unit of time is known as the frequency of a sinusoidal wave. A parameter that describes the rate of oscillation and vibration is called frequency. Hertz is the SI unit for frequency. One full oscillation per second corresponds to one hertz (Hz).

Therefore, The wavelength of the sound wave is 11cm, The frequency of the sound wave is 3118.18 and The length of the air column is 35.75c

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Answer:

The reason is that for the options above, bacteria can only grow most rapidly in the range of temperatures between ~ 40 °F and 140 °F and the reason foods like those have to be refrigerated is because meat can go rot pretty easily and there could have a lot of bacteria and things we do not want at all. But put meat in the fridge can slow down bacterial growth.

Explanation:

Well the answer toy your question is that, counter foods such as:

( The only things that are on my counter RIGHT now is the shown above.

The reason is that for the options above, bacteria can only grow most rapidly in the range of temperatures between ~ 40 °F and 140 °F

So that is why some foods like fruits can stay out.

The reason why foods like:

The reason foods like those have to be refrigerated is because meat can go rot pretty easily and there could have a lot of bacteria and things we do not want at all. But put meat in the fridge can slow down bacterial growth.

Thus the answer to your problem is:

The reason foods like those have to be refrigerated is because meat can go rot pretty easily and there could have a lot of bacteria and things we do not want at all. But put meat in the fridge can slow down bacterial growth.

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In Maths finding the square root of a number is the opposite of squaring a number. The square root of the square of a positive number gives the original number. The Square root of 2.56 is 1.6.

The square root of a number can be defined as the factor which we can multiply by itself to get that number. The symbol used to represent the square root is √.

The square root of any number can be found out without using calculator by using long division method. Here the square root of 2.56 is 1.6. Divide, multiply, subtract, bring the next number and repeat. These are the steps of it.

√2.56 = 1.6

The long division method of 2.56 is attached here.

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the answer I got was 6000Hz

Answer:

The answer is definitely A

Ann's speed with sandbags is 400 meters in 5 minutes, or an average of 80 meters per minute.

In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.Speed is defined as. The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.There are four types of speed which are uniform speed, variable speed, average speed, and instantaneous speed.

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Answer:

When you squeeze a bottle that has a balloon attached to its opening, the pressure inside the bottle increases. This increased pressure will cause the air molecules inside the bottle to move closer together, which in turn will cause the balloon to inflate.

If you continue to squeeze the bottle, the pressure inside the bottle will continue to increase, and the balloon will continue to inflate. However, if you squeeze the bottle too hard, the balloon may burst due to the excess pressure.

When you release the pressure on the bottle, the air molecules inside the bottle will spread out again, causing the pressure to decrease. As a result, the balloon will deflate back to its original size.

Answer:

hi

Explanation:

there is the answer

hope it helps

good luck

Using Coulomb's Law, the force between two charges is given by:

F = k * q1 * q2 / r^2

Where k is Coulomb's constant (9.0 x 10^9 N*m^2/C^2), q1 and q2 are the charges, and r is the distance between the charges.

Substituting the given values, we have:

F = (9.0 x 10^9 N*m^2/C^2) * (8.0 x 10^-9 C) * (2.0 x 10^-3 C) / (0.80 m)^2

F = 36 N

Therefore, the force between the two charges is 36 N.

What is Coulomb's law?

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Farming or agriculture by humans had great impact on the population in certain areas. Farming created a facile environment for people get into a developing life and the areas feasible for cultivation were populated more.

Human populations have frequently rebuilt their subsistence niches, altering both their food sources and living environments. For instance, most human populations changed from foraging to engaging in various forms of agriculture over the past 12,000 years.

It is well known that the transition to agriculture had an impact on a number of areas of human biology and demography, including mortality risk, population growth, adult body size, and physical indicators of health.

The reasons why populations tended to grow in size at times when indices of health declined are poorly understood since these tendencies have not been included in a comprehensive conceptual framework. All these are significant changes after the generation of an agricultural society.

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The average power developed by the boy during the climb is approximately 29.4 W.

In physics, the amount of energy transferred or converted per unit time is called power.

total height = number of steps x height of each step

total height = 30 x 0.15 m = 4.5 m

Given, time = 60 s

As power = work done / time

work done = force x distance

force = mass x gravity

mass is boy's mass (40 kg) and gravity is acceleration due to gravity (9.81 m/s²).

force = 40 kg x 9.81 m/s² = 392.4 N

The distance that the boy moves is equal to the total height that he has climbed: distance = total height = 4.5 m

work done = force x distance

work done = 392.4 N x 4.5 m = 1765.8 J

power = work done / time

power = 1765.8 J / 60 s

power ≈ 29.4 W

Therefore, the average power developed by the boy during the climb is approximately 29.4 W.

As for the anomalous behavior of water, water has a higher boiling point and melting point as compared to other substances with similar molecular weight. This is due to the strong hydrogen bonding between water molecules, which requires more energy to break the bonds and change the state of water from solid to liquid to gas.

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The parameter that is consistent with the indicated change in momentum is:

First we can use the principle of conservation of momentum to determine which of the following parameters are consistent with the indicated change in momentum:

p = m * v

Where

If the momentum of the object increases from 5 kg·m/s to 25 kg·m/s in the same direction, then we can conclude that:

Therefore, the parameter that is consistent with the indicated change in momentum is:

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The electrostatic force between the two charges will decrease in magnitude and become attractive.

What is Electrostatic Force?

Electrostatic force, also known as Coulombic force or Coulomb's law, is the force that exists between electrically charged particles, such as protons and electrons. The force is exerted by one charged particle on another and can be attractive or repulsive, depending on the types of charges involved.

The magnitude of the electrostatic force is directly proportional to the product of the charges on the particles and inversely proportional to the square of the distance between them. Mathematically, this can be expressed as F = k(q1q2)/r^2, where F is the electrostatic force, q1 and q2 are the charges on the particles, r is the distance between them, and k is the Coulomb constant.

If one of the like charges becomes oppositely charged, the electrostatic force between them will become attractive. .

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Answer: Unequal heating rates of land and water

Explanation: During the day the land heats up faster, the warm air over the land rises up and the cold air from the sea blows towards the land causing a sea breeze.

Answer:

the future of c DC and hi to mere ko pahchani pahchani pahchani pahchani pahchani pahchani pahchani pahchani pahchani the future of c DC and hi

Explanation:

v I will be in the future of c DC and hi to everyone who has a few days ago I will be in the future of c DC and hi to everyone and their children of God I will be in the future of c DC and hi to everyone who has a few days ago I will be in the future of c DC and their families of the attached document and their families will get back from try to the the future can vsnydb behind f

Answer:

a. time of flight = 4.285 s

b. horizontal distance reached = 214.25m

c. final velocity = 65.3m/s, at 40° downwards

Explanation:

This is a projectile motion question.

Things to note, in all projectile motion questions:

In projectile motion questions, we will use the three equations of motion:

[tex]v=u+at\\v^2=u^2+2as\\s=ut+\frac{1}{2}at^2[/tex]

Thus we can adjust our equations for the x - component:

[tex]v=u\\s=ut[/tex], since acceleration = 0

For the y - component:

[tex]v=u-gt\\v^2=u^2-2gs\\s=ut-\frac{1}{2}gt^2[/tex], since acceleration = gravity (9.8 m/s²), downwards.

Now, with our question, we can note: u(x) = 50m/s, and u(y) = 0, since, initially, only horizontal motion. Also, s(y) = - 90m.

(a) After how many seconds will it strike the plain at the foot of the cliff?

In this question, we are asked to find time of flight, 't'. As we have s(y), u(y), and g, we can use the third equation, [tex]s=ut-\frac{1}{2}gt^2[/tex] to find t.

Since u=0, thus, - 90 = -1/2×9.8×t². solving this algebraically, therefore, time of flight = 4.285 s.

(b) At what distance from the foot of the cliff will it strike?

Now, we need to find the horizontal distance or range. All we can use to do this is s = ut. Since we know that u=50m/s, and t=4.285s, this will be easy. s = (50)(4.285) = 214.25 m.

Therefore, horizontal distance reached = 214.25m.

(c) With what velocity will it strike the ground?

In this part, we need to find final velocity. Final velocity = the resultant vector of both the x and y velocity components. [tex]v=\sqrt{(v_x)^2+(v_y)^2}[/tex].

Since horizontal velocity is constant, u = v, and therefore, v(x) = 50m/s.

For vertical velocity, we can use [tex]v^2=u^2-2gs[/tex]. u(x) = 0, and s(y) = -90m.

Therefore, v² = -2(9.8)(-90). final vertical velocity is thus 42m/s.

Now final velocity = √(50² + 42²) ≈ 65.3 m/s.

Lastly, we need to remember to calculate direction, since velocity is a vector quantity. the direction of velocity (θ) [tex]=tan^{-1}(\frac{v_y}{v_x})[/tex]

Therefore, θ = 40°.

Therefore, final velocity = 65.3m/s, at 40° downwards.

The two hockey players move off together at a common velocity of 7 m/s after the collision.

What is principle of conservation of momentum?

We can apply the momentum conservation concept to resolve this issue. This rule states that a closed system's total momentum is conserved both before and after a collision.

The product of an object's mass and velocity determines its momentum. As a result, we can determine each hockey player's momentum prior to the contact using the formulas below:

The total momentum of the system before the collision is the sum of these individual momenta:

           p_total = p1 + p2 = 420 kg m/s + 560 kg m/s = 980 kg m/s

The two hockey players fall off together after the collision. After the collision, their velocities are unknown to us, but we do know that their total momentum is still preserved. Hence, we can write:

                     p_total = (m1 + m2) * v_total

where v_total is the common velocity of the two hockey players after the collision. We can rearrange this equation to solve for v_total:

v_total = p_total / (m1 + m2)

= 980 kg m/s / (70 kg + 70 kg)

= 7 m/s

Therefore, the two hockey players move off together at a common velocity of 7 m/s after the collision.

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The metric units with these measurements is force: Newton

Metric units are a type of measurement system based on the meter, kilogram, and second. It is the most widely used system of measurement in the world and is used by most countries. Metric units are based on a decimal system, which means that each unit is a multiple or fraction of 10, and is defined in relation to a basic unit. For example, the meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. Other metric units, such as the liter, are defined as multiples of the basic unit.

distance: meter

work: joule

power: Watt

energy: joule

time: second

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Increasing the distance between an electromagnet and the compass will cause the observed effect of the compass to decrease in strength

The strength of the magnetic field produced by an electromagnet decreases as the distance from the electromagnet increases. This means that if the distance between the electromagnet and the compass increases, the magnetic field that the compass is experiencing will weaken.

As a result, the observed effect of the compass will decrease in strength as the distance between the electromagnet and the compass increases.

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The refractive index of the liquid, given that the depth is 4 cm and the coin appears to be 3. 5 cm is 1.2

Refractive index is related to real depth and apparent depth according to the following formula:

Refractive index = Real depth / Apparent depth

With the above formula, we can obtain the refractive index as illustrated below:

Refractive index = Real depth / Apparent depth

Refractive index = 4.2/ 3.5

Refractive index = 1.2

Thus, the refractive index is 1.2

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Explanation:

If both charges are positive, the force will be positive; similarly, if both charges are negative, the force will be positive.

If one charge is positive and another is negative, the force will be negative.

The correct answer is "positive; negative". According to Coulomb's Law, the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. The force is attractive if the charges are of opposite sign (one positive and one negative), and repulsive if the charges are of the same sign (both positive or both negative). Therefore, when one charge is positive and another is negative, the force between them is attractive, while when both charges are positive or both are negative, the force between them is repulsive.

Greater in size than that of the second star is the first star. If Chaya looks at the information for two stars. They are both the same hue, yet the first star is brighter overall than the second.

A star's absolute magnitude, M, is the magnitude it would have if it were situated 10 parsecs away from Earth. Astronomers might compare the true (intrinsic) brightness of various stars by taking into account stars at a given distance.

More powerful (or greater wattage) stars will glow brighter than less powerful ones (lower wattage). Nevertheless, that because a star appears brighter doesn't always imply it is. The brilliance of a star is also influenced by how close to us it is. An thing seems darker the further it is away.

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Answer:

Density of iron = 7.87 g/cm^3

Explanation:

Answer:

Explanation:

Given :

We need to find the frequency of the wave

Using formula:

Where,

On substituting the required values, we get:

[tex] \dashrightarrow \sf \: F = \dfrac{80}{0.3} \\ \\ \dashrightarrow \sf \: F = 266.6 \: Hz[/tex]

Therefore,