identify the INDEPENDENT and DEPENDENT variables in each of the following research statements
1) Studying the role of gender on reading scores.
2) Examining the effect of Prozac on symptoms of depression.
3) A researcher is interested in how the activity level of 4 year old children is affected by viewing a 30 minute
video of teenage mutant nijna turtles or a 30 minute video of elmo.
4) A therapist wants to test a new drug designed to increase the ability of teenagers with ADHD to take
accurate notes in class.
5) Participants taking part in a sleep study to determine whether the number of hours of sleep a person gets
determines how well they will do on an exam.

The correct decreasing order of the particle size is given below:

Conglomerate, Sandstone, Siltstone.

Conglomerates are those rocks, which have a particle size varying from the size of a pebble (2 mm) to the size of a boulder (256 mm).

Sandstones are those rocks, which have particle sizes varying from 1/16 mm to 2 mm. Sandstones are generally sand.

Siltstones (or generally silt) are those rocks, which have particle sizes varying from 1/256 mm to 1/16 mm.

Hence, the conglomerate has the largest particle size, the sandstone has a medium particle size and the siltstone has the smallest particle size.

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By diameters of 7 and 4 cm, telescope A gathers 3.0625 more light than telescope B.

Astronomers use telescopes to see objects that are far away. Most telescopes, particularly large telescopes, use curved mirrors to capture and focus light from the night sky. A telescope is a device that magnifies distant objects. Without a question, the telescope is the most important scientific instrument in astronomy. It enables the collecting and study of radiation emitted by celestial objects, even those in the furthest regions of the cosmos. Hawaii is home to the Keck Observatory. A telescope is a gadget that is used to see faraway objects. If you like, you may look at the planets using a telescope. The sharper the image, the greater the magnification on the telescope.

Here,

=(7/4)²

=49/16

=3.0625

The telescope A gather more light by 3.0625 than telescope B by diameter of 7 and 4 cm.

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1. To compute three experimental values of the lens's focal length, the following formula can be used:

f = (1/u) + (1/v)

where f is the focal length, u is the object distance, and v is the image distance.

2. To compare the experimental focal lengths to the measured focal length found in step 3, the calculated values can be compared with the measured value of 15 cm.

Note: The focal length of a lens can be calculated using the lens formula, which relates the object distance (u), the image distance (v), and the focal length (f) of a lens.

They slide up to 0.0756 meters to the opposite direction.

What is Velocity ?

Velocity is a vector quantity that describes the rate of change of an object's position. It is equal to the displacement of an object divided by the time interval over which the displacement occurred. Velocity has both magnitude and direction, and its units are typically meters per second (m/s).

The velocity of an object can change over time due to acceleration, and if an object is moving in a circular path, it also has a component of velocity perpendicular to its direction of motion, known as centripetal velocity.

Conservation of momentum:

        60x6 -120x4 =180.v

              v = 120/180 = 2/3 m/s

After falling,

            Kinetic energy = work done against friction

             K=  0.5x180x(2/3)2 = 40 J

Work done against friction,

                       W = f.S = μ.(M +m)g.S = 0.3 x 180x9.8 x S

                            = 529.2 x S

Equating W = K and solving,

                      S = 40/529 = 0.0756 m= 7.56 cm

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On a figure or object and in a short statement banner you can plan to use text in your political cartoon.

What exactly are political cartoons used for?

A drawing that offers a humorous or unfavorable opinion about particular political persons or occasions. The objective is to influence the audience to take a particular stance on a historical event. A political cartoon expresses the views of its artist. It has an effect on the brain of spectators. But more often than not, they are attempting to persuade you than to amuse you. An effective political cartoon tries to convince you to agree with the cartoonist's point of view while also provoking discussion about current events by making their image in your brain.

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Here is one way to implement the solution in Java:

class Solution {

   public int solution(int N) {

       int sumOfDigitsN = getSumOfDigits(N);

       for (int i = N + 1; ; i++) {

           if (getSumOfDigits(i) == 2 * sumOfDigitsN) {

              return i;

           }

       }

   }

   private int getSumOfDigits(int n) {

       int sum = 0;

       while (n > 0) {

           sum += n % 10;

           n /= 10;

       }

      return sum;

   }

}

Java is a high-level programming language developed by Sun Microsystems (now owned by Oracle Corporation) in the mid-1990s. It is class-based, object-oriented, and designed to have as few implementation dependencies as possible, meaning that code written in Java can run on any device with a Java Virtual Machine (JVM) installed, regardless of the underlying architecture.

Java is widely used for developing applications for desktop computers, mobile devices, web servers, and enterprise applications. It is also a popular language for creating Android mobile apps. Java's popularity stems from its simplicity, portability, security, and scalability

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(a) 14.94 m horizontally from the base of the building the ball strikes the ground.

(b) The height from which the ball was thrown =15.44 m

(c) It takes 1.86 seconds for the ball to reach a point 10.0m below the level of launching

(a) The horizontal distance from the building can be found using the equation:

x = vi * t

where

vi = initial horizontal velocity = 8.00 m/s * cos(20.0°)

t = time = 3.00 s

x = vi * t = 8.00 * cos(20.0°) * 3.00 = 14.94 m

(b) The height from which the ball was thrown can be found using the equations:

y = vi * t - 0.5 * g * t^2

where

vi = initial vertical velocity = 8.00 m/s * sin(20.0°)

g = acceleration due to gravity = 9.8 m/s^2

t = time = 3.00 s

y = vi * t - 0.5 * g * t^2 = 8.00 * sin(20.0°) * 3.00 - 0.5 * 9.8 * 3.00^2

= 15.44 m

(c) To find the time it takes for the ball to reach a point 10.0 m below the launch point, we can use the equation:

y = vi * t - 0.5 * g * t^2

Rearranging and solving for t, we have:

[tex]t = \sqrt{(2 * (y - vi * t) / g)[/tex]

where

y = -10.0 m (below the launch point)

vi = initial vertical velocity = 8.00 m/s * sin(20.0°)

g = acceleration due to gravity = 9.8 m/s^2

[tex]t = \sqrt{(2 * (-10.0 - 8.00 * sin(20.0°) * t) / 9.8)}[/tex]

Numerically solving,

t = 1.86 s

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To test the accuracy of the newspaper account, you should first calculate the drag coefficient. This is the ratio of the aerodynamic drag force (which is proportional to the square of the velocity of the object) to the object's weight.

Assuming a terminal velocity of 102 mi/h and a deceleration of the paratrooper due to air resistance proportional to his velocity, with a constant of proportionality, you can calculate the drag coefficient using the following equation:

Drag Coefficient = 2 * Weight * Terminal Velocity / (Air Density * Surface Area * Velocity^2)

Using this equation, you can calculate the drag coefficient for the given account.

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Answer:

No i cannot

Explanation:

because i haven't learnt it yet

I am so sorry

Nicole threw the ball with an initial velocity of 22.1 m/s.

To determine the initial velocity that Nicole threw the ball, we can use the conservation of energy equation, which states that the initial kinetic energy of the ball plus the potential energy due to its height is equal to the final kinetic energy of the ball plus the potential energy due to its height.

The equation can be expressed as:

1/2 * m * Vo^2 + m * g * h = 1/2 * m * V^2 + m * g * h, where m is the mass of the ball, g is the acceleration due to gravity, h is the height difference, Vo is the initial velocity, and V is the final velocity.

Plugging in the known values, we can rearrange the equation to solve for Vo:

Vo = √(V^2 + 2gh) = √(15^2 + 2 * 9.8 * 5.5) = 22.1 m/s.

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A. Any two objects in the universe exert gravitational force on each other. The gravitational force can affect objects even if they are far from each other, and it does not only affect objects within the solar system or those on the surface of a planet or moon.

According to the law of universal gravitation, any two objects in the universe exert a gravitational force on each other, proportional to their masses and inversely proportional to the square of the distance between them. The strength of the gravitational force decreases as the distance between the objects increases.

You can calculate gravitational force by:

F = G * (m1 * m2) / r^2, in the equation F stands for force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r shows the distance between them.

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The correct answer is quicksand or liquefied.

Quicksand is a type of soil that can trap and sink objects placed on its surface due to the high viscosity of the sand caused by the presence of water.

When weight is placed on quicksand, it causes the solid particles to separate and the water to rise to the surface, making it difficult to extract the object or support weight. It is often found near riverbanks, estuaries, and other water sources.

When pressure is applied to quicksand, such as a person or object stepping on it, the sand loses its strength and cannot support weight. This can result in the person or object becoming trapped and sinking into the quicksand.

It is important to exercise caution when near quicksand, as it can be difficult to extract yourself or others once trapped. The best way to avoid quicksand is to stay on solid ground and avoid low-lying, marshy areas near water sources.

If you do become trapped in quicksand, it is recommended to remain calm and try to slowly spread your weight over a larger area to gradually extract yourself.

Therefore, The correct answer is quicksand or liquefied.

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The time taken for the rock to reach the ground, given that the rock was dropped from the top of the 321 m skyscraper is 8.09 s (3rd Option)

We know from motion under gravity that height and time are related according to the following equation:

h = ½gt²

Where

Using the above formula, we can obtain the time taken for the rock to reach the ground. Details below:

h = ½gt²

321 = ½ × 9.8 × t²

321 = 4.9 × t²

Divide both side by 4.9

t² = 321 / 4.9

Take the square root of both side

t = √(321 / 4.9)

t = 8.09 s

Thus, the time taken is 8.09 s (3rd Option)

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Average temperature (in degrees Fahrenheit) of the water in the Gulf of Mexico for each month of the past year. This is interval scale.

In the quantification process, data and variables can be classified into four types of measurement scales namely:

Nominal is the simplest measurement scale. The data is defined on the basis of the classification process, the data is distinguishable. The numbers used are only as categories and have no meaning and cannot be used for mathematical calculations.

Data arranged on the basis of levels in certain attributes. This scale is based on ranking. This ordinal measurement scale is used in determining the ranking of a particular group. In this ranking only the order of objects is considered from the largest to the smallest or from the highest to the lowest.

This scale shows the distance between one data and another data and has the same weight. In an interval scale, the relationship between the order and the distance between the numbers has meaning.

The ratio scale is almost the same as the interval scale, the difference is that the ratio measurement scale has an absolute zero value and the same distance, while the interval does not.

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Answer:

The proper hand placement while driving is at 9 and 3 o'clock position or 10 and 2 o'clock position on the steering wheel. It is important to keep hands in the correct hand placement to ensure maximum control of the vehicle in case of sudden events or emergency situations, and to avoid fatigue or cramping in the hands and arms. Keeping hands at the proper placement allows for quick and effective responses to unexpected road conditions and enables the driver to make necessary adjustments to maintain the safety of themselves and others on the road.

The mass of the Earth written in scientific notation is 5.97 × 10²⁴ kg and \(m, n\) = \(5.97, 24\).

Scientific notation is a way of expressing very small or very large numbers in a simpler form.

In scientific notation, the number is written as

c

Where

Write this large number in scientific notation!

Mass of the Earth = 5,970,000,000,000,000,000,000,000 kg

Determine the \(m\) and \(n\), separated by commas!

We count the number of 0 in the value above. It is 22.

In scientific notation, the mass of the Earth is

= 5,970,000,000,000,000,000,000,000 kg

= 597 × 10²² kg

= 5.97 × 10²⁴ kg

m × 10ⁿ = 5.97 × 10²⁴ kg

The value of

\(m, n\) = \(5.97, 24\)

Hence, the scientific notation of the mass of the Earth is 5.97 × 10²⁴ kg with \(m, n\) = \(5.97, 24\).

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Answer:7

Explanation:

:)

Answer: It's 7.

Explanation:

This means there are 7 protons and 7 electrons in the atomic structure.

Answer:here is your answer

Explanation:

a) The magnitude and direction of the sum of two vectors can be found by using the Pythagorean theorem and the concept of angles. If we consider A and B to be the components of the sum vector, then the sum vector can be represented as follows:

A + B = (74 units, West) + (74 units, South) = √(74^2 + 74^2) units, arctan(74/74) = 106 units, arctan(1) = 45° South of West

So, the magnitude of A + B is 106 units and the direction is 45° South of West.

b) The magnitude and direction of the difference of two vectors can be found similarly. If we consider A and B to be the components of the difference vector, then the difference vector can be represented as follows:

A - B = (74 units, West) - (74 units, South) = √(74^2 + 74^2) units, arctan(-74/74) = 106 units, arctan(-1) = 45° North of West

So, the magnitude of A - B is 106 units and the direction is 45° North of West.

1. In finding analytic solution of forced d.e's the IC's must always be evaluated after the expressions for the transient and steady state have been combined. (True)

2. The frequency at which at which sinusoidal forcing function causes the steady-state amplitude oscillations of a mass-spring-damper system to be maximum is the natural frequency. (False)

Sine waves or sinusoidal are mathematical functions which are in the form of smooth, repetitive oscillations. This function often appears in the sciences mathematics, physics, signal processing, and electrical engineering, and various other fields.

Sine waves are very important in physics because they retain their shape when added to another sine wave of the same frequency even though the phase is different. This wave is the only periodic function that has this property. This property makes these waves an important part of Fourier Analysis.

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Answer:

It is true

Explanation:

Because

You are holding an ice cube in your left hand you touch it and find that it is hard and slick and cold due to temperature differences, heat started to flow from our body to ice.

Ice cube in your left hand feels cool because ice exist zero or even below zero degrees Celcius. but our body temperature is 37degree. Due to temperature differences, heat started to flow from our body to ice. Hence Ice feels colder on touching.

If two objects have different temperatures, heat will flow from the warmer object to the colder one depending on there temperature. For instance, when you hold an ice cube, heat is transferred from your warm hand to the cold ice and melts it. Your hand feels cold because it is losing heat energy.

This process occur due to thermal energy .Thermal energy refers to the energy contained within a system or energy stored inside the system that is responsible for its temperature. Heat is the flow of thermal energy .In other words thermal energy is the flow of heat.

Our body is at a temperature of 37C and our finger tips are at slightly lower temperature, but they are still much above the temperature of the ice cube at 0C.So, when we touch the ice cube, we transfer heat to the ice cube of our body and the loss of heat results in a lowering of temperature and that is sensed as cold.

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Answer:

The minimum force, F, required for the block to just start to move is equal to the force of static friction, f s:

f s = (µ)s x N

where N is the normal force (the force perpendicular to the surface) = m x g = 2.0 kg x 9.8 m/s^2 = 19.6 N

f s = (µ)s x N = 0.50 x 19.6 N = 9.8 N

The force, F, required for the block to continue to move at a constant velocity is equal to the force of kinetic friction, f k:

f k = (µ)k x N = 0.30 x 19.6 N = 5.88 N

If a force is applied greater than the force required for the block to continue to move at a constant velocity, the block will accelerate. If the applied force is greater than the minimum force required for the block to just start to move, the block will begin moving.

Answer:

76.5

Explanation:

To find the maximum torque the crane can withstand, we can use the formula: torque = force x distance x sin(angle).

Given that the arm of the crane is 16.0 m long and makes an angle of 11.3 degrees with the horizontal, we can substitute these values into the formula:

torque = force x distance x sin(angle)

Since the maximum load the crane can handle is 468 N, we can substitute that value for force:

torque = 468 N x 16.0 m x sin(11.3 degrees)

The unit of torque is Newton-meters (N*m). To get the torque, you need to convert the angle to radians by multiplying the degree by pi/180.

torque = 468 N x 16.0 m x sin(11.3 x pi/180)

You will get the maximum torque the crane can withstand is about 76.5 N*m.

Three objects of identical shape and mass, m, are attached to a rod of length l and negligible mass its moment of inertia is ML^2/2.

Mass of object = m

Distance between them=l

objects have equal mass so center of mass will be at the axis

Distance of object from center of mass d=l/2

Moment of inertia=mass *distance between them^2

Total momentum of inertia = moment of inertia of object 1
+ moment of inertia of object 1

I=Md^2+Md^2

I=M(L/2)^2+M(L/2)^2

I=ML^2/2

Moment of inertia, is a quantitative measure of the rotational inertia of a body—i.e., the opposition that the body exhibits to having its speed of rotation about an axis altered by the application of a torque (turning force). The axis may be internal or external and may or may not be fixed depending on the situation.

SI unit: kg⋅m2

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Simply put, the formula for the relationship between humidity and temperature is that they are inversely proportional.

The relative humidity will drop as the temperature rises, making the air drier; conversely, if the temperature drops, the air will get wet and the relative humidity will rise.

Temperature and humidity have an inversely proportionate relationship. The relative humidity will decrease as temperature rises, making the air drier. As a result of the air becoming wetter as the temperature drops, the relative humidity will rise.

With the same quantity of absolute/specific humidity, air will have a HIGHER relative humidity if it is cooler and a LOWER relative humidity if it is warmer because warm air may contain more water vapor (moisture) than cold air.

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The set of all vectors which are scalar multiples of a nonzero vector u is a line through u and 0. a column vector in r₂ is a 1 x 2 matrix. The magnitude of a vector cv is c times the magnitude of v, where c is any scalar. The correct option is Option C.

Vector multiplication may refer to one of several products between two (or more) vectors. Multiplication of vectors is of two types. A vector has both magnitude and direction and based on this the two ways of multiplication of vectors are the dot product of two vectors and the cross product of two vectors. Dot product or "scalar product", is a binary product that takes place with two vectors and returns a scalar quantity. The dot product of two vectors can be defined as the product of the magnitudes of the two vectors and the cosine of the angle between the two vectors. Thus, A ⋅ B = |A| |B| cos θ

Cross product, or the "vector product", is a binary product on two vectors that results in another vector. So, if n is the unit vector perpendicular to the plane determined by vectors A and B,

A × B = |A| |B| sin θ n

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Inertia is being illustrated when a tablecloth is quickly yanked beneath dishes resting on a table.

Answer is D.

What is Inertia ?

Inertia is a property of matter that causes an object to resist a change in its state of motion. This means that an object that is at rest will stay at rest, and an object that is in motion will stay in motion, unless an external force is applied to it.

Inertia is one of the fundamental laws of physics and is closely related to mass. Objects with greater mass have greater inertia, meaning that it takes more force to move them. Inertia is also responsible for the resistance of objects to changes in their speed or direction.

This can be seen in motion such as throwing a ball, where the ball will maintain its velocity until it is acted upon by an outside force. Inertia is also responsible for the momentum of objects, which is the product of mass and velocity.

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Explanation:

Wapp=w+ma

Wapp=mg+ma

Wapp=6*10+6*10

Wapp=60+60

Wapp=120N

Answer:

To find the acceleration that takes place in 0.18 seconds, we can use the formula:

acceleration = (change in velocity) / (change in time)

In this case, the change in velocity is 320km/h (the final speed) - 0.0 km/h (the initial speed) = 320km/h

And the change in time is 0.18 seconds.

So the acceleration is:

acceleration = (320 km/h) / (0.18 seconds) = 1777.78 km/h^2 or 1777.78 m/s^2

The acceleration is equal to 1777.78 m/s^2.

CentiStoke (cSt) conversion: 1 mm2/s = 106 m2/s. The kinematic viscosity of water at 20 °C is approximately 1 cSt.

0.8 mm2 per second or soWater has a kinematic viscosity that ranges from 1.3 mm2 per second at 10 °C to 0.8 mm2 per second at 30 °C. The viscosity of water reduces as temperature rises.

By dividing a fluid's absolute viscosity by its mass density, the kinematic viscosity of the fluid may be calculated.

The shear stress is divided by the rate of shear strain to get dynamic viscosity, also known as absolute viscosity.

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