Which of the following is the dependent variable in this experiment? (Velocity)
A.The distance the ball travels
B.The mass of the ball
C.The time it takes the ball to travel
D.The average velocity of the ball

Answer:

Explanation:

Formula

KE = 1/2 m v^3

Givens

m  = 54 kg

v = 30 m/s

Solution

KE = 1/2 54 * 30^2

KE = 1/2 54 * 900

KE = 27 * 900

KE = 24300 Joules

The airline will need to have at least 167 passengers on each flight to break even.

To calculate the number of passengers needed to break even, we need to consider the total costs and the revenue generated per flight.

The total cost per flight consists of the fixed costs (£25,000) and the variable costs (£75 per passenger). The revenue per flight is determined by the ticket price (£225) multiplied by the number of passengers.

Let's denote the number of passengers as 'P'. The total cost per flight is given by:

Total Cost = Fixed Costs + (Variable Cost per Passenger * Number of Passengers)

Total Cost = £25,000 + (£75 * P)

The revenue per flight is given by:

Revenue = Ticket Price * Number of Passengers

Revenue = £225 * P

To break even, the total cost should equal the revenue:

£25,000 + (£75 * P) = £225 * P

Now, we can solve this equation for P to find the number of passengers needed to break even:

£25,000 + (£75 * P) = £225 * P

£25,000 = £225 * P - £75 * P

£25,000 = £150 * P

P = £25,000 / £150

P ≈ 166.67

Since the number of passengers must be a whole number, we round up to the nearest whole number:

P = 167

The airline will need at least 167 passengers on each flight to break even. However, since the maximum capacity of the aircraft is 200 passengers, the airline will need to fill the aircraft to its maximum capacity to break even on each flight.

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Answer:

Signal Detection Theory, or SDT, is probably the most important and influential theoretical framework for modeling how perceptual decisions are made in forced-choice tasks. Its central concept is that perceptual decisions are based on a stochastic or probabilistic representation of stimuli inside the brain.

Explanation:

To determine the partial vapor pressure of benzene in a mixture at 50 °C, we need additional information, such as the mole fraction of benzene in the mixture and the vapor pressure of pure benzene at that temperature.

Raoult's law relates the partial vapor pressure of a component in an ideal mixture to its mole fraction and the vapor pressure of the pure component. If we have the mole fraction of benzene (Xbenzene) and the vapor pressure of pure benzene at 50 °C (Pbenzene), we can use Raoult's law to calculate the partial vapor pressure of benzene (Pbenzene_partial) in the mixture: Pbenzene_partial = Xbenzene * Pbenzene .The mole fraction of benzene (Xbenzene) represents the fraction of the total moles of the mixture that are benzene molecules. It ranges from 0 to 1, with 0 indicating no benzene present and 1 indicating that the entire mixture consists of benzene.

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Answer:

Much of our understanding of the basic structure and composition of Earth and the other planets in our solar system is not strenuously debated. We can infer a surprising amount of information from the size, mass and moment of inertia of the planets, all of which can be determined from routine astronomical observations. Measurements of surface chemical composition, either by direct sampling (as has been done on Earth, the moon, and Mars) or through spectroscopic observations, can be used to estimate elemental abundances and the degree of chemical differentiation that occurred as the planets condensed from the solar nebula. Remote observations of the gravitational field can be used to understand how a planet's mass is distributed, whereas the strength and shape of the magnetic field provides some constraint on the structure of a metallic core. The specifics of structure and composition, however, are much more debatable. And it is these details that tell us a much more extensive and ultimately more interesting story about the internal dynamics of the planets and their evolution. As a result, trying to determine them is frontier research in almost all fields of earth and planetary science.

Even on Earth, many of these details have to be inferred from remote observations. Because we cannot sample the deep Earth, we must deduce its composition either by looking at the clues hidden in igneous and metamorphic rocks, or by examining proxies for composition and structure such as the three-dimensional variation of the velocity of seismic waves produced by earthquakes and sampled by networks of seismometers on the surface. The late Francis Birch, the eminent Harvard geophysicist, and his colleagues and students worked out the basic methodology that brings these distinct observations together. Birch showed how the stiffness of rocks changes under the extreme conditions of pressure and temperature deep within planets, as well as with chemical composition. Because the speed of seismic waves depends on the stiffness of the medium through which they propagate, it is possible to calculate temperature and composition from maps of seismic velocity. Most current research is based on Birch's work and it has even been extended to the most extreme temperature and pressure conditions of Earth's core. For example, much of our understanding of the large- and small-scale convection patterns driving plate tectonics has come about by using Birch-type proxies for temperature and composition.

Explanation:

HOPE THIS HELPS! :)

Explanation:

a) weight = m * g = 3 x 10^6 kg   * 10 m/s^2 = 3.0 x 10^7  N

b)    Thrust - weight = 3.3 x 10^7 N  - 3.0 x 10^7 N    = 3 x 10^6 N

c)  F = ma        3. x 10^6   =   3 X 10^6  * a     solve for 'a' = 1 m/s^2

d)  weightless  (but not massless)

The correct answer is (b) amount of time when a specific event happened.

Numeric age means that we can more precisely assign a number (in years, minutes, seconds, or some other units of time) to the amount of time that has passed.  Thus we can say how old something is. For Example this metamorphic rock is 3.96 billion years old.

Numerical age is typically expressed as the amount of time that has passed since a specific event or reference point. This event can vary depending on the context or field of study. For example, in geology, numerical age is often expressed as the time that has elapsed since a particular rock formation or the age of fossils. In archaeology, numerical age may refer to the age of artifacts or the duration of ancient civilizations. In each case, the numerical age is a measure of the elapsed time since a specific event or occurrence.

Therefore, the correct answer is option(b).

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ANSWER

EXPLANATION

Parameters given:

Initial velocity, v0 = 78.4

Angle of projectile, θ = 52 degrees

(a) To find the flight time of the tennis ball, apply the formula:

where g = acceleration due to gravity

Hence, the total flight time of the tennis ball is:

(b) To find the maximum altitude of the ball during its flight, apply the formula:

Therefore, the maximum height attained by the tennis ball is:

(c) To find the horizontal distance the tennis ball travels, apply the formula:

Hence, the horizontal distance traveled by the tennis ball is:

(d) To find the final velocity of the tennis ball, apply the formula:

where h = initial height = 0 m

Hence, the final velocity of the tennis ball just before impact is:

Answer:

0.02 Hertz

Explanation:

Answer:

other answer is correct it is 0.02 Hz

Explanation:

The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0. 724 w/m^2. The maximum value of the magnetic field in the wave will be B = 7.79 * \(10^{-8}\) T .

The Poynting vector, named after John Henry Poynting, is used in order to demonstrate the energy flux density of an EM field. Per definition, the Poynting vector is the result of the vector product of the field's electric and magnetic components

Pointing vector of electromagnetic wave =( 1 / mu0) * E B    

where

E = Electric field

B = Magnetic field

Average value of Pointing vector of electromagnetic wave

<S> = 0.724 = (1/2 mu0) EB            equation (1)

Also

E = c B

substituting the value of E in equation (1)

Pointing vector = (1/2 mu0) * (c B  * B)

0.724  =  (1/2 mu0) * c\(B^{2}\)

B = 7.79 * \(10^{-8}\) T

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A puck moves at 2.35 m/s in a -22° angle.It is pushed for 0.215 seconds by a hockey stick, changing its velocity to 6.42 m/s in a 50.0° direction. The negative sign indicates that the puck has fallen below its initial height.

How to solve the given problem with the help of trigonometry?

To solve the problem, we need to use the equations of motion and trigonometry.

First, let's find the initial velocity components:

\(\mathrm V_{i,x} = v_i cos(\theta_i) = 2.35 cos(-22^\circ) \approx 2.216\text{ m/s}\)

\(\mathrm V_{i,y} = v_i sin(\theta_i) = 2.35 sin(-22^\circ) \approx -0.891\text{ m/s}\)

where \(v_i\) is the initial velocity and \(\theta_i\) is the initial angle in degrees.

Next, we need to find the final velocity components:

\(\mathrm V_{f,x} = v_f cos(\theta_f) = 6.42 cos(50^\circ) \approx 4.121\text{ m/s}\)

\(\mathrm V_{f,y} = v_f sin(\theta_f) = 6.42 sin(50^\circ) \approx 4.936\text{ m/s}\)

where \(v_f\) is the final velocity and \(\theta_f\) is the final angle in degrees.

The change in velocity components are:

\(\Mathrm\Delta V_x = V_{f,x} - V_{i,x} \approx 1.905\text{ m/s}\)

\($\Delta V_y = V_{f,y} - V_{i,y} \approx 5.827\text{ m/s}\)

The time of the push is t = 0.215 s.

Using the equation of motion, we can find the change in position in the y-direction:

\($\Delta y = V_{i,y} t + \frac{1}{2} a_y t^2\)

where a_y is the acceleration in the y-direction.

Since the puck is in flight, the only force acting on it is gravity, which causes an acceleration of \(-9.8 m/s^2\) in the y-direction.

Plugging in the values, we get:

\(\Delta y = (-0.891\text{ m/s})(0.215\text{ s}) + \frac{1}{2} (-9.8\text{ m/s}^2)(0.215\text{ s})^2 \approx -0.139\text{ m}\)

Note that the negative sign indicates that the puck has fallen below its initial height.

Therefore, the change in position in the y-direction is approximately 0.139 m.

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Answer:

0.434

Explanation:

Answer:

Explanation:

Energy is defined as the ability to cause changes in matter. The energy of moving matter is called kinetic energy.

Answer:

When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms, forming ions. The resulting compound is called an ionic compound.

:

Answer:

Explanation:

the action or fact of showing an abstract idea.

(◑.◑)!

Manifestation (or manifesting) refers to

various pseudoscientific self-help

strategies intended to burning about

a personal goal, primary by focusing

one's thought upon the desired outcome.

The techniques are based on the law

of attraction of New Thought spiritually.

While the process involves positive

thinking, or even directing request to

"the universe", it also involves

action-steps on the part of the individual.

Manifestation has been criticised as

having no basis in physical science.

Alison Bernstein, a professor of

translational neuroscience at Michigan

State University said in an interview

with Vice that "You can't magically

make things happen. You can [However]

change the way you react to certain

situations, which sounds to me like

Cognitive Behavioral Therapy". She

want no to assert that "manifestation

is not supported by science.

Given a conducting rod that is 45.5 cm long and sliding on a pair of rails at a velocity of 3.25 m/s, we need to determine the magnitude and direction of the induced voltage when it passes through a magnetic field of 0.85 T.

To calculate the induced voltage, we can use Faraday's law of electromagnetic induction, which states that the induced voltage is equal to the rate of change of magnetic flux through the circuit. The formula for induced voltage is given by:

V = B * L * v

Where:

V is the induced voltage,

B is the magnetic field strength,

L is the length of the conducting rod perpendicular to the magnetic field, and

v is the velocity of the conducting rod.

In this case, the length of the rod perpendicular to the magnetic field is the same as the length of the rod itself, so L = 45.5 cm = 0.455 m. The magnetic field strength is given as 0.85 T, and the velocity is 3.25 m/s. Substituting these values into the formula, we have:

V = 0.85 T * 0.455 m * 3.25 m/s

V = 1.1368 V

Therefore, the magnitude of the induced voltage is approximately 1.1368 volts. The direction of the induced voltage can be determined using the right-hand rule, which states that if you point your right thumb in the direction of the velocity vector (from the rod's starting point to its endpoint), and your fingers in the direction of the magnetic field, then the direction in which your palm faces represents the direction of the induced voltage.

In conclusion, the magnitude of the induced voltage is 1.1368 volts, and the direction can be determined using the right-hand rule.

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Answer:

A.protons and neutrons in the nucleus.

Rank of the given planets from left to right based on their distance from the Sun, from closest to farthest is Earth, Jupiter, Saturn, Uranus, Neptune

The four Jovian planets in our solar system (Jupiter, Saturn, Uranus, and Neptune) can be ranked from left to right based on their distance from the Sun. The leftmost image in the provided pictures shows Earth, which is the third planet from the Sun. The other inner planets (Mercury and Venus) are not shown.

The next planet in the row is Jupiter, followed by Saturn, Uranus, and Neptune. Since the jovian planets are farther from the Sun than the inner planets, they are arranged in order of their increasing distance from the Sun. Therefore, the four Jovian planets can be ranked from left to right as Jupiter, Saturn, Uranus, and Neptune.

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The given question is incomplete, the complete question is:

The following images show Earth and the four Jovian planets of our solar system. Rank these planets from left to right based on their distance from the Sun, from closest to farthest

Answer:

Vibrating objects produce sound waves from pressure waves.

Explanation:

The sound produced is transmitted through pressure waves within the object. The object vibrating back and forth rapidly pushes air foward to make way for itself. When a force is officially applied on an atom, it continues to move from its original position and exerts a force on the adjacent atom.

The net torque on the seesaw is 294 Nm.

Torque is the force that tends to rotate the body to which it was applied.

To calculate the net torque, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The net torque on the seesaw is 294 Nm.

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Ohm's law has three formulas, which are V = IR, I = V/R, and R = V/I.

Ohm's law describes the relationship between voltage, current, and resistance in an electrical circuit. The first formula, V = IR, states that the voltage across a resistor is directly proportional to the current flowing through it, with the constant of proportionality being the resistance of the resistor.

The second formula, I = V/R, expresses the current flowing through a resistor in terms of the voltage across it and the resistance of the resistor. Finally, the third formula, R = V/I, gives the resistance of a resistor in terms of the voltage across it and the current flowing through it. These formulas are commonly used in analyzing and designing electrical circuits.

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Answer:

the density of water is 1 and tin is 7.31 if i remember right

Explanation:

Answer:

if sams answer is yes that they can have a child who is a non-taster then your answer is yes

Explanation:

if both parents are heterozygotes, 25% of their children can be nontaster.

The environment was quite different. Based on the sediment in the rock sample (photograph X), it is likely that this area was once covered by a shallow sea or ocean. The presence of fine-grained sediment, such as silt and clay, suggests that the water was relatively calm and quiet.

About 290 million years ago, during the Paleozoic era, Kansas was covered by a shallow sea known as the Permian Sea. The sedimentary rocks found in Kansas, including limestone, sandstone, and shale, were deposited in this sea over millions of years.

The environment in which sediment is deposited can provide clues about the conditions of the area at the time. Based on the type of rock you mentioned, it is likely that the sediment was deposited in a marine environment, such as a shallow sea or a shoreline. The limestone could have been formed from the accumulation of shells and other organic material from marine organisms, while the sandstone and shale could have been deposited by erosion and transport of sediment from nearby land.

In terms of the landscape, it is possible that the area that is now Kansas was a low-lying coastal plain, with rivers and streams carrying sediment into the sea. The rolling hills and farm fields seen today are a result of more recent geologic processes, such as erosion and deposition by wind and water.

Overall, the sediment in the rock sample you mentioned was likely deposited in a marine environment in what is now Kansas, during the time period of the Permian Sea.

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The properties of a good insulator are as follows:

A good insulator may be characterized as a material that does not easily allow heat and/or electricity to pass through it. Plastic, wood, rubber, and glass are examples of good insulators.

They do not allow electricity to pass through them. That is why they are used to cover materials that carry electricity, such as the plastic covering that surrounds wires as it prevents electricity from flowing where it is not needed.

Therefore, the properties of a good insulator are well described above.

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The goal of the lab is to investigate the relationship between density and buoyancy. The lab aims to determine how different objects or substances behave in fluids and understand the principles of density and buoyancy through experimental observations and calculations.

The goal of the lab or the question being addressed in the lab report is to investigate and understand the concepts of density and buoyancy. Density refers to the measure of how much mass is contained within a given volume, while buoyancy refers to the upward force exerted on an object submerged in a fluid, such as water or air.

The lab report aims to explore the relationship between density, mass, and volume by conducting experiments and analyzing data. It may involve measurements of different objects or substances, determining their masses and volumes, and calculating their densities. The report may also involve experiments related to buoyancy, such as determining the buoyant force on an object and investigating factors affecting buoyancy.

By conducting the lab and analyzing the obtained results, the lab report aims to provide a deeper understanding of these fundamental concepts in physics and to demonstrate the principles of density and buoyancy through practical experimentation. The report may also include discussions of the significance and applications of density and buoyancy in various fields, such as engineering, architecture, and fluid dynamics.

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Answer:

Explanation:

It's called static equilibrium. The object is motionless and every force equals/cancels each other out