A car accelerates northwest from 35 to 62 m/s in a time of 14 seconds. What is the acceleration?
a = Vf - Vi / t
A) 27 m/s2 northwest
B) 1.9 m/s2 northwest
C) -1.9 m/s2 northwest
D) 61 m/s

Both the opponent-process theory and the corollary discharge theory predict a complementary color aftereffect when you shift your gaze to the white wall.

Suppose you stare at a static red square for two minutes, you then move your eyes back and forth across a white wall. The Opponent-process theory and corollary discharge theory predict you will experience a complementary color aftereffect when you shift your gaze to the white wall. The opponent-process theory suggests that cells in the visual system respond to complementary color pairs such as green and red, yellow and blue, and white and black. The cells work in opposition, with one group exciting and the other inhibiting. When the cells become fatigued due to prolonged exposure to a color, the cells' firing rates adjust, causing an opponent color to become more sensitive.

Cone cells adapt to changes in visual stimuli and return to their baseline firing rates, which is known as adaptation. The visual system responds in the opposite direction after adaptation to a stimulus, causing a complementary color aftereffect. This effect causes a red afterimage when you look away from a green stimulus or a green afterimage when you look away from a red stimulus. The corollary discharge theory explains how the brain anticipates the sensory consequences of a motor act. In the human body, a motor command is given by the brain, which then sends a copy of that command to the visual system.

The visual system anticipates the motion of the object that is being tracked and removes the motion that results from the eye's movement, allowing the object's motion to remain stable on the retina even though the eye is moving. When the eye's movement is blocked, the motion's removal causes an illusion of movement in the opposite direction, known as a motion aftereffect. Thus, both the opponent-process theory and the corollary discharge theory predict a complementary color aftereffect when you shift your gaze to the white wall.

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Answer:

placing an object between two free ends of a wire in a circuit. the circuit must have a bulb, wires, crocodile clips and a switch (optional) .

Explanation:

get a material between the clips . if the bulb lights up, the object is a conductor and is it doesn't its an insulator.

In materials such as metals the outer most electrons are loosely bound and therefore their movement is chaotic, this allows for the transportation of energy in form of electricity therefore, this materials are good conductors. The statement is true.

At time t = 15/16, the object reaches a state of zero velocity, indicating a momentary pause in its motion. Prior to this time, the object moves in one direction, while after this time, it changes direction and moves in the opposite direction. The value t = 15/16 represents the specific moment when the object transitions from one direction to another and experiences a brief period of rest.

To find the velocity v(t) of the object at any time t, we differentiate the given distance function s(t) = 9 - 15t + 8t² with respect to time:

v(t) = d/dt (9 - 15t + 8t²)

Applying the power rule of differentiation, we obtain:

v(t) = -15 + 16t

Therefore, the velocity v(t) of the object at any time t is given by v(t) = -15 + 16t.

To determine when the object is at rest, we set the velocity v(t) equal to zero and solve for t:

-15 + 16t = 0

Adding 15 to both sides of the equation, we have:

16t = 15

Finally, dividing both sides by 16, we find

t = 15/16

Hence, the object is at rest when t = 15/16.

This means that at time t = 15/16, the object's velocity is zero, indicating that it is momentarily stationary. Before this time, the object is moving in one direction, and after this time, it is moving in the opposite direction. The value t = 15/16 represents the specific point in time when the direction of motion changes, and the object is at rest for an instant.

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Answer:

B is the right answer

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Answer:

theory is an idea to explain something,

Explanation:

Einstein's ideas about relativity are an example of the theory of relativity.

Answer: If skin cancer is related to ultraviolet light, then people with a high exposure to uv light will have a higher frequency of skin cancer.

Explanation:

Answer:

I would be 5 centimeters I think

Thus, simulated freefall is a method of creating zero gravity conditions by allowing a spacecraft to travel in orbit, resulting in a constant state of freefall. During this process, the gravitational pull of the Earth and the centripetal force generated by the spacecraft’s motion are balanced, resulting in a state of weightlessness or zero gravity inside the spacecraft.

Simulated free fall is a process that is used to create zero gravity conditions in space. It is done by allowing a spacecraft to travel in an orbit, which results in a constant state of freefall. The conditions in a spacecraft during a simulated freefall are similar to those in a state of zero gravity. In simulated freefall, the spacecraft moves at a speed that allows it to remain in orbit while constantly falling towards the Earth. During this process, the gravitational pull of the Earth and the centripetal force that is generated by the spacecraft’s motion are balanced. This balance results in a state of weightlessness or zero gravity inside the spacecraft. In addition to being used for research and experimentation, simulated freefall is also used to train astronauts for spaceflight. By creating a zero gravity environment on Earth, astronauts can get a feel for what it will be like to work and live in space. They can practice tasks such as moving around and handling equipment, which are much different in zero gravity than they are on Earth.

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When astronomers use the method of stellar parallax to determine the distances to stars, using the radius of Earth's orbit as the baseline, the distance of the star can be found from the parallactic angle, p.

Astronomers use an effect named parallax to calculate distances to nearby stars. Parallax is the evident displacement of an object because of a transition from the observer's point of view. This effect can be utilized to gauge the distances to nearby stars. In order to make finding enormous distances as manageable as possible, astronomers developed a new unit of distance called the parsec. One parsec is the distance to an entity that has a parallax of one arcsecond, utilizing the Earth's orbit as the baseline.

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In this given circuit, there are two resistors, R2 and R3 connected in series with a battery of 12 V as shown below;\(\Delta V = V = 12 V\)Let us first find the total resistance of the circuit.

Using the formula, resistances in series add up to give the total resistance of the circuit\(R_T = R_2 + R_3 = 8\ \Omega + 12\ \Omega = 20\ \Omega\)

Using Ohm's Law; the current through the circuit can be calculated as follows;

\(I_T = \frac{V}{R_T} = \frac{12\ V}{20\ \Omega} = 0.6\ A\)

Thus, the current through each of the resistors, R2 and R3 is the same and it is equal to the total current of the circuit;\(I_1 = I_2 = 0.6\ A\)

The potential difference across each of the two resistors, R2 and R3 is different because of the difference in resistance. Using Ohm's Law, the potential difference across each resistor can be calculated as follows;

\(\Delta V_2 = V_{R_2} = I_2 \cdot R_2 = 0.6\ A \cdot 8\ \Omega = 4.8\ V\)

\(\Delta V_3 = V_{R_3} = I_2 \cdot R_3 = 0.6\ A \cdot 12\ \Omega = 7.2\ V\)

Thus, the potential difference across resistor R2 is 4.8 V and across resistor R3 is 7.2 V.

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10 Newtons of the force is required to accelerate a 5 kg bowling ball at 2 m / s², as we know that the force is calculated by the multiplication of the mass and the acceleration of the object.

What is Newton's second law?

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

F = mass × acceleration

As given in the problem we have to calculate how much force in Newtons is required to accelerate a 5 kg bowling ball at 2 m/s² ,

The force required = 5 × 2

                               = 10 Newtons

Therefore, according to Newton's second law, 10 Newtons of the force is required to accelerate a 5 kg bowling ball at 2 m / s².

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#1.mass
#2. 10N
#3. a nonzero net force is acting on it

#4. an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the x-axis

#5. The object is at rest

There are the answers for the quick check, hope it helped.

The valence electrons of the atom is easier to complete by the gain of electrons.

We know that the electron configuration has to do with the arrangement of the electrons around the nucleus of the atom, the electrons that can be found in the atom are arranged in energy levels.

We know that the non metals  tend to complete their octet by the gain of electrons. It is easier for them to do this because the electrons just remain quite a few to be able to complete the required octet for atoms.

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The statement accurately describes the current in the metal conductor is it is a flow of electrons from negative to positive terminal. The correct option is A.

Conductors allow the current to pass through them. The given statements are about movement of subatomic particles.

When linked to a battery, the electric field (created by the battery) accelerates free electrons, and because they are negatively charged, they travel from the negative terminal to the positive terminal due to the electric field, gaining energy and speed. The ion is ultimately the winner (of energy) in this collision because the transit is not smooth and the electrons bump into the lattice ion.

The given question is incomplete. The complete question contains options. They are 'A.It is a flow of electrons from negative to positive terminal B.It is a flow of electrons from positive to negative terminal C.It is a flow of protons from negative to positive terminal D.It is a flow of protons from positive to negative terminal

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The water weighs 900kg / (\(m^{2}\))

Force required to raise this layer is,

\(F_{t}\) = 900g(\(V_{t}\))

= 900(9.8) π(225 -\(y_{1}\) ^ 2) Δy

Each particle in the layer must travel a distance of approximately (15 + 5) -  \(y_{1}\)= 20 - \(y_{1}\)

The work \(w_{1}\) done to raise this layer to the top is approximately the product of the force \(F_{1}\) and the distance 20 - y

\(W_{1}\) ≈ \(F_{1}\)(20 - \(y_{1}\) )

≈ 900(9.8) π (225 - \(y_{1}\)^2)(20 - \(y_{1}\)) Δy

then solve,

and we get,

volume = π(225 - \(y_{1}\)^2)Δy

What is density ?

The substance's mass per unit of volume is known as its density (volumetric mass density or specific mass). Although the Latin letter D may also be used, the sign most frequently used for density is (the lower case Greek letter rho). The density of a pure substance is equal to its mass concentration in numbers. Density varies widely among materials and may be important in relation to packaging, purity, and buoyancy. The densest known elements under conditions of normal temperature and pressure are osmium and iridium. It is occasionally substituted by the dimensionless quantity "relative density" or "specific gravity," which is the ratio of the density of the material to that of a standard material, typically water, to make density comparisons across different systems of units easier.

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The statement "If we  place a non polar molecule in an electric field" is  true  because  a non polar molecule will not experience a significant force or reorientation in an electric field because it lacks a permanent electric dipole moment.

Non polar molecules have a symmetrical distribution of charge, meaning the positive and negative charges are evenly distributed. In an electric field, the electric forces acting on individual atoms or charges within the molecule will cancel each other out due to the symmetry.

Since the net force on the molecule is zero, it will not accelerate or move in response to the electric field. Similarly, there will be no net torque on the molecule, meaning it will not rotate or align itself with the electric field.

In summary, non polar molecules do not interact strongly with electric fields due to their balanced charge distribution, resulting in no net force or torque being exerted on them.

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The head-to-tail method consists of changing the subtraction of vectors into an addition, where the second vector in the addition will be the opposite vector of the second vector in the subraction:

If vector b is <1, 4>, vector -b is <-1, -4> (we just need to change every signal).

Now, let's draw vector 'a', and in the head of vector 'a' let's start drawing the tail of vector b:

The red vector, which is the sum of 'a' and '-b', is created at the tail of 'a' and finishes at the head of '-b'.

The initial point is (0, 0), and the terminal point is (-4, -9)

Answer:

index fossil, any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environment. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata. In marine strata, index fossils that are commonly used include the single-celled Protista with hard body parts and larger forms such as ammonoids. In terrestrial sediments of the Cenozoic Era, which began about 65.5 million years ago, mammals are widely used to date deposits. All of these animal forms have hard body parts, such as shells, bones, and teeth, and evolved rapidly.

Explanation:

Answer:

B -- a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom.

Explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!

The electrons in the outermost shell available for bonding are known as valence electrons. Therefore, option (B) is correct.

Valence electrons can be described as the electrons occupying the valence shell or outermost shell of an atom while the electrons filled in the inner shell are known as core electrons. Lewis structures can be helpful to evaluate the valence electrons and know the nature of bonds.

Valence electrons can be filled in several electron shells and these electrons participate in the interaction between atoms and lead to the formation of bonds.

Only electrons filled in the outermost or valence shell can participate in the formation of a chemical bond and set the trend of the reactivity of the element. Valence electrons participate in bonding to achieve the noble gas configuration.

Therefore, valence electrons are the electrons in the outermost shell available for bonding.

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Light slows down and somewhat changes direction as it passes through water from air. Refraction is the name for this shift in direction.

Light "bends" more in the direction of the normal line when it enters a denser substance (one with a higher refractive index). Some light is reflected off of water when light that is going through the air collides with it. The remaining light enters the water and travels through it, but it bends (or refracts) as it does so. When light strikes glass or any other transparent substance, the same thing occurs. Air is lighter and thinner than glass and water. It is claimed that they are "denser" than air. Light slows down when it transitions from less dense air into denser glass or water.

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Answer: (Sorry, but I don't know how to calculate mass)

1. 15 N

2. 0.4921 \(\frac{ft}{s^2}\) (feet per second squared)

4. 150 N

5. 8.202 feet per second squared

Answer:

The second (abbreviation, s or sec) is the Standard International ( SI ) unit of time. One second is the time that elapses during 9,192,631,770 (9.192631770 x 10 9 ) cycles of the radiation produced by the transition between two levels of the cesium 133 atom. ... One second is equal to 1/86,400 of a mean solar day.

Explanation:

Answer:

oi

Explanation:

Answer:

Sustainable energy is essential to meet uncontrolled rising demand for energy, reduce pollution and shift to resources that can be used again and again.

Explanation:

Considering the Sustainable Goals floated by United Nation, it is essential for all countries to improve their score in all the SD goals.

One of the SD goal is to shift to sustainable energy.

Sustainable energy is essential from following three points

- Reuse of energy source again and again to outcome the fear of resource depletion

- Sustainable energy source shall ensure cleaner environment

- Sustainable energy sources are also essential to meet the rising consumption of energy with time all across the globe.

Some common examples are - Solar energy, Wind Energy, Energy from nuclear fuels etc.

Answer:

The speed of sound is greater in hot air than it is in cold air. This is because the molecules of air are moving faster and the vibrations of the sound wave can therefore be transmitted faster. This means that when sound travels from hot air to cold air or from cold air to hot air it will refract.

Explanation:

Hope this will be help!

Answer:

d I guess not sure

b if down I guess

Explanation:

if worng then plz dont say anything as I am not sure about the ans

The full form of rms velocity is Root mean square velocity. The temperature at which hydrogen molecules have the same rms speed as nitrogen molecules at 155 ∘C is 30.57 K.

The root mean square velocity is defined as the square root of the mean of squares of the velocity of individual gas molecules. The equation used to calculate the rms velocity is:

Vrms = √3RT / M

155°C = 155 + 273 = 428 K

'M' is molar mass

Vrms N₂ = √3R × 428 / 28      (1)

Vrms H₂ = √3RT / 2                (2)

From the equation (1) and (2),

√3RT / 2  = √3R × 428 / 28

3RT / 2 = 3R × 428 / 28

T = 30. 57 K

Thus at 30. 57 K hydrogen molecules have the same rms speed as nitrogen molecules.

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The downward force here on top of the cylinder is greater than this pressure's equivalent upward force here on bottom of the cylinder.

By pressing a knife on some fruit, one can get a straightforward illustration of pressure. The surface won't be cut if you press the flat section of the knife against the fruit. The force is dispersed over a wide area (low pressure).

Other pressure measurements include pounds per square inch, bar, millimeters of mercury (used to measure blood pressure), centimeters of water, torr, MSW, and FSW. Atmospheric pressure is measured in atm.

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