the buoyant force is directly proportional to: question 3 options: the acceleration of gravity. none of the above is correct. the mass of the fluid. the surface area of the object.

ANSWER:

B. mechanical

STEP-BY-STEP EXPLANATION:

Sound or sonic waves are a mechanical waves created by a vibrating object.

So the correct answer is B. mechanical

When earth catches up to a slower-moving outer planet and passes it in its orbit, in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet exhibits retrograde motion.

What do you mean by retrograde motion?

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(1) The angular velocity at position 1 of a uniform rod rotating freely around an axis can be determined.

(2) The velocity of the center of mass at position 2.

(1) To determine the angular velocity at position 1, we need to consider the conservation of angular momentum. Since the rod is rotating freely, there are no external torques acting on it.

The initial angular momentum is zero, and at position 1, the angular momentum is given by L = Iω, where I is the moment of inertia of the rod and ω is the angular velocity. By substituting the values of mass and length of the rod into the formula for moment of inertia, we can solve for ω.

(2) To calculate the velocity of the center of mass at position 2, relative to position 1 and at an angle theta, we can use the concept of angular velocity and linear velocity. The linear velocity of the center of mass is given by v = ωr, where ω is the angular velocity and r is the distance between the center of mass and the axis of rotation. By considering the given angle theta and the length of the rod, we can determine the distance r.

Substituting the value of ω calculated in part (1) into the formula, we can find the velocity of the center of mass at position 2, relative to position 1 and at angle theta.

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Answer:

The sailboats average speed was 13 mph.

Explanation:

To calculate the speed of the boat first calculate the total ammountof hours it took the boat to get to its destination. Then divide 144 by that number which comes out to 13.

The average speed of the sailboat is determined as 12 miles per hours.

The average speed of an object in motion is obtained by dividing the total distance traveled by the object with the time spent in the entire journey.

v = total distance/total time

where;

v = 144/12

v = 12 mph

Thus, the average speed of the sailboat is determined as 12 miles per hours.

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Answer:

it begins to move to the right! :)

Answer:

Las estrellas se forman debido a la unión de pequeños elementos y partículas como el hidrógeno y el helio que experimentan una fusión nuclear en el núcleo debido a la intensa presión para formar un nuevo átomo (como dos hidrógeno que se combinan para formar un átomo de helio) que es un proceso. que requiere una gran cantidad de energía para comenzar, por lo que cada reacción de fusión produce una gran cantidad de energía que puede mantener la reacción y equilibra la fuerza gravitacional que atrae las masas de las partículas hacia el centro de la estrella

A medida que la energía de la estrella se irradia, la superficie de la estrella cede la energía en forma de calor y luz de manera que debido a la alta temperatura de las partículas de los átomos de los elementos se mueven muy rápida y energéticamente para emitir fotones rápidamente. (alta frecuencia) que se ve como el alto brillo de la estrella

Explanation:

Answer:

so you gotta bring the 5 and add to 7

After we eat, our glucose levels rise when carbohydrates are fully broken down. This alarms beta cells (in the pancreas) to release insulin into our bloodstream and altogether insulin allows the glucose to enter our cells and be utilized for energy. Some carbs are used for energy and the rest is stored as fat!

Hope I helped in some way :)

The statement reaction time is the lapse of time between muscular movement and external stimuli is True.

Muscular movement is a consequence of a natural response to a stimulus, which travels first truth the nervous system to reach muscular cells that contract to produce movement or motion.

This process (muscular movement) and the presence of external stimuli is called reaction time because this measurement varies among different individuals and it can be measured from the initial stimulation from the surrounding media to the concomitant response in the muscle cell caused by the contraction of the sarcomere, which is composed of actin and myosin filaments.

Therefore, with this data, we can see that muscular movement is caused by the contraction of muscle cells, which receive info from the nervous system that is decodified as a response as a consequence of stimuli from the surrounding environment.

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Any considerable variation in seismic wave velocity in the crust occurs because there are different types of rocks in the crust.

Seismic waves are waves of energy that travel through the Earth's interior, including the crust. The speed of these waves varies depending on the type of rock they are travelling through. The Earth's crust is made up of a variety of different rocks, such as sedimentary, igneous, and metamorphic rocks, each with its own unique density, elasticity, and other properties that affect the speed of seismic waves.

As a result, seismic waves can be used to study the composition and structure of the Earth's crust, and the variation in their velocity is a crucial aspect of this study. Therefore, the correct answer is that any considerable variation in seismic wave velocity in the crust occurs because there are different types of rocks in the crust.

The complete question is:-

Any considerable variation in seismic wave velocity in the crust occurs because

Group of answer choices

there are different types of rocks in the crust

waves move slower the deeper they travel

waves move faster the deeper they travel

there is no variation of velocity in the crust.

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There are several factors that can cause significant variations in seismic wave velocity within the Earth's crust, including:

1) Rock type: Different types of rock have different physical properties, including density and elasticity, which affect the speed at which seismic waves travel through them. For example, dense, hard rocks like granite have higher seismic velocities than softer, more porous rocks like sandstone.

2) Temperature: Seismic wave velocity is also influenced by temperature, with higher temperatures generally resulting in lower velocities.

This is because hotter rocks tend to be more ductile and less rigid, which reduces their ability to transmit seismic waves quickly.

3) Pressure: Pressure can also affect seismic wave velocity, with higher pressures generally resulting in higher velocities.

This is because high pressure can cause rocks to become more compact and less porous, which increases their ability to transmit seismic waves.

4) Presence of fluids: The presence of fluids such as water or oil can also affect seismic wave velocity. Fluids tend to decrease seismic velocities by reducing the effective stress and increasing the porosity of rocks.

Overall, the complex interplay of these factors can result in significant variations in seismic wave velocity within the Earth's crust, which can provide important information about the geological structure and composition of the subsurface.

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Answer:

24

Explanation:

If it took 3 hours to clean 6 houses than you can figure that is 2 houses per hours. so if there are 12 hours and 2 houses an hour, you multiply 12x2 and get 24. Another way to do it is to use proportions (aka two fractions that equal eachother):

  3 hours                12 hours

----------------    =    ---------------

 6 houses          number of houses

To calculate this, we can think about how we go from 3 to 12. Well, 3x4 is 12, so we got to 12 by doing multiplying by 4. So we can multiply 6 by 4 and you get 24.

Hope it helps! have a great day :)

Compared to the power consumption of resistor R₁ with the switch open, the power consumption of R₁ with the switch closed is greater.

When the switch is open, no current flows through resistor R₁, so its power consumption is zero. However, when the switch is closed, a current flows through both resistors R₁ and R₂.

The power consumption of a resistor is given by the formula P = I²R, where P is the power, I is the current, and R is the resistance.

Since R₁ < R₂, the current flowing through R₁ will be greater than the current flowing through R₂, assuming the voltage across both resistors is the same.

As a result, the power consumption of R₁ with the switch closed will be greater than its power consumption with the switch open, as the increased current flowing through R₁ leads to higher power dissipation.

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Answer:

4 LE DIOXYDE  DE CARBONE

Explanation:

Answer:

t = 0.97 s

Explanation:

Given that,

height, h = 4.7 m

We need to find the time taken by the object to fall 4.7 m.

Let it is t. Using second equation of kinematics to solve it such that,

\(h=ut+\dfrac{1}{2}gt^2\)

u is initial velocity, u = 0

So,

\(h=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2h}{g}}\\\\t=\sqrt{\dfrac{2\times 4.7}{9.8}}\\\\t=0.97\ s\)

So, the required time is equal to 0.97 seconds.

The time it would take the object is 0.98 secs

From the question,

We are to determine how much time it would take for an object to fall 4.7 meters. That is, the time it would take the object to fall from a height 4.7 meters.

From one of the equations of motions for free falling object.

\(h = ut + \frac{1}{2} gt^{2}\)

Where h is the height

u is the initial velocity

t is the time

and g is the acceleration due to gravity (Take g = 9.8 m/s²)

Since, the object is dropped from rest, the initial velocity, u, is 0 m/s

From the given information,

h = 4.7 m

Putting the parameters into the equation, we get

\(4.7 = 0(t) +\frac{1}{2} (9.8)t^{2}\)

\(4.7 = 0 + 4.9t^{2}\)

\(4.7 = 4.9t^{2}\)

∴ \(t^{2} = \frac{4.7}{4.9}\)

\(t^{2}= 0.9592\)

\(t = \sqrt{0.9592}\)

t = 0.98 secs

Hence, the time it would take the object is 0.98 secs

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Answer:

I'm pretty sure it's mist, drizzle, droplet, and then rain.

The correct answer of terrestial weather:

The solar insolation in the visible and infrared regions of the solar electromagnetic spectrum is much more than the energy that space weather occurrences release into the troposphere and stratosphere. Despite claims to the contrary, there may be some connection between the Earth's climate and the 11-year sunspot cycle. There is no proof of this. For instance, it has frequently been suggested that the Maunder minimum, a 70-year period almost devoid of sunspots, is correlated to a cooler climate, but these correlations have vanished after further research. Changes in cosmic ray flux are hypothesized to affect how much cloud formation occurs.

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Answer:

Mechanical energy = 35 Joules

Explanation:

Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;

a. Potential energy (P.E): it is an energy possessed by an object or body due to its position above the earth.

b. Kinetic energy (K.E): it is an energy possessed by an object or body due to its motion.

Furthermore, the mechanical energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body.

Mathematically, it is given by the formula;

Mechanical energy = P.E + K.E

Given the following data;

Potential energy = 15 J

Kinetic energy = 20 J

To find the mechanical energy;

Mechanical energy = P.E + K.E

Mechanical energy = 15 + 20

Mechanical energy = 35 Joules

Answer:

Mechanical energy = 35 Joules

Explanation:

Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

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Answer:

Decrease

Explanation:

If you were on the Moon, which has significantly less mass than the Earth, your weight would: decrease

The point that seemed to be giving me a complicated time was being able to distinguish the difference and meaning of weight and mass and being able to apply that to a problem. I kept mixing up the definitions. For example in homework 3.1, one question asked:

If you were on the moon, which has significantly less mass than the earth, your mass would:

a. increase

b. decrease

c. stay the same

d. become zero

The definition of mass is the amount of matter in an object. The definition of weight is the amount or unit of force. For me, I just had to remember that when it asked about weight, it wasn’t referring how heavy an object is. After I was able to recognize that when it came to weight, questions became easier.

The final and correct answer was decreasing. The answer is because the Moon’s mass is less. This means the gravitational force is less on your body, therefore, your mass is going to be lighter

Answer:

Friction

Explanation:

In the event that the power is applied toward the path inverse to the bearing of movement, it goes against the movement of the item and henceforth the speed of the article diminishes.

Then, in the event that the thing continues to move one way, grinding will dominate and go about as the moving variable.

So, the moving factor would be friction.

The maximum energy stored in the capacitor at any time during the current oscillations is \(0.278 \times 10^{-9\) joules.

An L-C circuit consists of an inductor and a capacitor connected in series. During the current oscillations, the energy is exchanged between the inductor and the capacitor, with the energy stored in the inductor being transferred to the capacitor and vice versa. The energy stored in the capacitor is given by the formula:

\($E_{max} = \frac{1}{2} C V_{max}^2$\)

where Emax is the maximum energy stored in the capacitor, C is the capacitance, and Vmax is the maximum voltage across the capacitor.

To find Vmax, we can use the fact that the maximum current in the inductor is related to the maximum voltage across the capacitor by the formula:

\($I_{max} = \frac{V_{max}}{\sqrt{LC}}$\)

where Imax is the maximum current in the inductor, L is the inductance, and C is the capacitance.

Substituting the given values, we get:

\($I_{max} = \frac{V_{max}}{\sqrt{0.400 \times 0.290 \times 10^{-9}}}$\)

Solving for Vmax, we get:

\($V_{max} = I_{max} \sqrt{0.400 \times 0.290 \times 10^{-9}} = 1.90 \sqrt{0.400 \times 0.290 \times 10^{-9}}$\)

= 1.38 V

Substituting this value in the formula for Emax, we get:

\($E_{max} = \frac{1}{2} \times 0.290 \times 10^{-9} \times (1.38)^2$\)

\($= 0.278 \times 10^{-9} \text{ J}$\)

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The following below application will transform the video's pixel information into position data. Example With Movavi, for instance, use the following procedures to modify the pixel size of videos is given below.

Procedure:

Convert any pixel information among the given video into position data:

#PImage img; // Declare a variable of type PImage

void setup() {

 size(320,240);

 // Make a new instance of a PImage by loading an image file

 img = loadImage("my summer vacation dot jpg");

}

void draw() {

 background(0);

 // Draw the image to the screen at coordinate (0,0)

 image(img,0,0);

}

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A student intends to demonstrate sound reflection to her classmates using a model. The wave tank model is the best model to represent what occurs when sound waves are reflected.

A "ripple tank" is a shallow tank of water with a source of waves at one end, and a barrier that can be adjusted to cause reflection of the waves at the other end. This model shows the reflection of water waves, which are similar to sound waves, and the resulting interference patterns that can occur. By changing the height of the barrier, students can observe how the angle of incidence affects the angle of reflection, demonstrating the concept of sound reflection.

The ripple tank model provides a simple, visual demonstration that can help students understand the basic principles of wave behavior, including reflection, refraction, and diffraction.

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Answer:

F = 196.2 N

Explanation:

Use Newtons law

F = m * a

F = 20 kg * 9.81 m/s²

F = 196.2 N

Answer:

\(\Huge \boxed{\mathrm{196.2 \ N}}\)

\(\rule[225]{225}{2}\)

Explanation:

Using weight formula:

\(\sf Weight = mass \times acceleration \ of \ gravity\)

\(W=mg\)

The mass of the box is 20 kg.

The acceleration of gravity on Earth is 9.81 m/s².

\(W=(20)(9.81)\)

\(W=196.2\)

The weight of the box is 196.2 N.

The net force of the box is zero, since the box is at rest. The normal force is exerted upward on it by the table.

\(\rule[225]{225}{2}\)

increase or decrease

Thus the mass may increase and  decrease due to conduction || varies

Answer:

C. Distance 90 feet Displacement 0 feet

Answer:

I think it is 1,200.

Explanation:

In the research I found, It says in a paragraph it is 1,200. I don't know if this is wrong or correct. I hope this helps!!!

The two largest natural cycles where convection currents occur are :

the movement of air in the atmosphere and

the movement of magma in the earth's mantle.

Answer:

The two largest natural cycles where convection currents occur are the movement of air in the atmosphere and the movement of magma in the earth's mantle.

Explanation: