The international astronomical union defines a constellation by its.

Answer: 4 s

Explanation:

Given

The applied force is 70 N

mass of the rock is 28 kg

initial velocity \(u=25\ m/s\)

final velocity \(v=15\ m/s\)

Deceleration provided by force is

\(a=-\dfrac{70}{28}=-2.5\ m/s^2\)

using the equation of motion

\(v=u+at\\\Rightarrow 15=25-2.5t\\\Rightarrow 2.5t=10\\\Rightarrow t=4\ s\)

Answer:

YOUR ANSWER IS HERE....

It must be either speeding up, or slowing down, or turning. There are no other possibilities.

Each peripheral nerve provides both motor AND sensory innervation to peripheral structures. The answer would be option C i.e. motor AND sensory

Your answer: C) motor AND sensory

Motor fibers carry signals from the brain or spinal cord to the muscles, causing them to contract and produce movement. Sensory fibers, on the other hand, carry signals from sensory receptors in the skin, muscles, and other tissues back to the brain and spinal cord, providing information about touch, temperature, pain, and other sensations. Therefore, each peripheral nerve provides both motor AND sensory innervation to peripheral structures. The answer would be option C i.e. motor AND sensory

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If the time is doubled to reach the same final velocity, then the acceleration will be half the acceleration before.

The rate of change of an object's velocity with respect to time is defined as acceleration. Vector quantities are accelerations.

Let's assume the final and the initial velocity of the object is v and u, respectively. Also, the time it takes is represented by t. Therefore, the acceleration can be written as,

a₁ = (v-u)/t

Now, if the time is doubled then the acceleration can be written as,

a₂ = (v-u)/2t

    = (1/2) × [(v-u)/t]

    = 0.5 × a₁

a₂ = 0.5a₁

Hence, If the time is doubled to reach the same final velocity, then the acceleration will be half the acceleration before.

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The  pressure at the bottom of the cylinder is two atmospheres at the depth d will be 202650 Pa.

The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure. In comparison to the surrounding pressure, gauge pressure is the pressure. Pressure is expressed using a variety of units.

Calculate the size of that surface. Check to see that both numbers are expressed in the proper units, such as newtons/meters squared or pounds/inches squared. By the area, divide the force. The units of measurement for your pressure are pascals (Pa) or pounds per square inch (psi).

\(P = {P_{{\rm{atm}}}} + {\rho _1}gd + {\rho _2}g{h_2}\)

\({h_2} = \left( {1 - d} \right)\\P = 2\;{\rm{atm}}\\\begin{array}{c}\\P = \left( {2\;{\rm{atm}}} \right)\left( {\frac{{101325\;{\rm{Pa}}}}{{1\;{\rm{atm}}}}} \right)\\\\ = 202650\;{\rm{Pa}}\\\end{array}\)

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Answer:

The correct option is;

D. The nervous system signals smooth muscles in the blood vessels to contract to increase blood pressure

Explanation:

The contraction or relaxation of the vascular smooth muscles lead to the blood vessel volume change and blood pressure change such that the blood is redirected to regions of the body that requires instantaneous increased oxygen intake. As such the nervous system signals the blood vessel's vascular smooth muscle to contract, through vasoconstriction so as to raise the blood pressure, when the blood pressure is low.

Answer:

Normal = 33.95N

Friction = 19.6 N

Coefficient of friction = 0.58

Explanation:

We can represent the situation as follows:

First, we need to calculate the normal force. Since the box is not moving perpendicular to the incline, the normal force and the weight in that direction has to be equal, then

Fn = mgcos30

Fn = (4kg)(9.8 m/s²)cos30

Fn = 33.95 N

In the same way, the box won't slide when the force of friction is equal to the parallel component of the weight, so

Ff = mgsin30

Ff = (4kg)(9.8 m/s²)sin(30)

Ff = 19.6 N

Additionally, the friction force is equal to

Ff = μFn

Where μ is the coefficient of friction, so solving for μ and replacing the values, we get:

μ = Ff/Fn

μ = 19.6/33.95

μ = 0.58

Therefore, the answers are:

Normal = 33.95N

Friction = 19.6 N

Coefficient of friction = 0.58

Dalton's atomic theory is related to the characteristics of atom. The statement describes one of the main principles of Dalton's atomic theory is atoms of same element are identical.

The Dalton's theory states that All matter is composed of extremely small particles called atoms and Atoms of a given element are identical in size, mass, and other properties. Atoms of different element are different.

Hence, the statement describes one of the main principles of Dalton's atomic theory is atoms of same element are identical.

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The total potential difference across all three batteries is 6 volts.

When batteries are connected in series, the total potential difference (V_total) is the sum of the individual voltages of the batteries.

Given:

Voltage of battery 1 (V1) = 1.5 V

Voltage of battery 2 (V2) = 2.5 V

Voltage of battery 3 (V3) = 2.0 V

To find the total potential difference across all three batteries, we add the individual voltages together:

V_total = V1 + V2 + V3

V_total = 1.5 V + 2.5 V + 2.0 V

V_total = 6 V

Therefore, the total potential difference across all three batteries is 6 volts.

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Answer:

im not sure

Explanation:

Answer:

8 minutes

Explanation:

Light travels at a speed of 299,792

kilometers per second; 186,287 miles

per second. It takes 499.0 second

for light to travel from the Sun to the

Earth, a distance celled 1 Astronomical

Unit.

Answer:

Explanation:

C. Adding salt to water increases the boiling point and decreases the freezing point.

The time that has passed since the 60Co source was labeled is 34.8 years.

1 mCi = 37 MBq

So, 4.00 mCi = 148 MBq

We are also given that the present activity (A) is 1.3 × 10^7 Bq.

The half-life (t₁/₂) of 60Co is 5.2714 years. To find the decay constant (λ), we can use the formula:

λ = ln(2) / t₁/₂

λ = ln(2) / 5.2714 y

λ = 0.1315 \(y^-1\)

Now we can solve for the time (t) that has passed since the 60Co source was labeled:

A = A₀ * e(-λt)

t = (ln(A₀/A)) / λ

t = (ln(148 × \(10^6\) Bq / 1.3 × \(10^7\) Bq)) / 0.1315 \(y^-1\)

t = 34.8 years

Half-life is the time taken for half of a given sample of a radioactive substance to decay or disintegrate. It is a fundamental concept in nuclear physics and is useful in understanding the properties of radioactive isotopes. Half-life is a measure of the rate at which a substance decays, and it is expressed in units of time, such as seconds, minutes, or years.

The decay process of a radioactive substance is random, which means that it is impossible to predict when a particular atom will decay. However, the half-life of a substance is constant and can be calculated using a mathematical formula. For example, if a substance has a half-life of 10 years, this means that after 10 years, half of the initial amount of the substance will have decayed, and after another 10 years, only a quarter of the original amount will remain, and so on.

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The total mechanical energy of the bicyclist is 1400 J, obtained by adding her potential energy of 720 J and kinetic energy of 680 J. The correct answer is option B.

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An individual's capacity to notice and learn about a stimulus is diminished if they have previously been exposed to it in a neutral or irrelevant environment. This phenomenon is known as latent inhibition.

With the use of traditional training procedures, latent inhibition is frequently examined. In a typical experiment, an individual or an animal is repeatedly exposed to an unimportant stimulus with no noticeable results. In following trials, the neutral stimulus is coupled with a physiologically important stimulus (such as food or an electric shock).

The goal is to determine how the subject's capacity to build an association between the neutral stimulus and the important stimulus is affected by the subject's prior exposure to the neutral stimulus. According to the phenomena of latent inhibition, prior exposure to a stimulus without any discernible effects results in a reduction in attention or learning when the stimulus is subsequently encountered in a pertinent context.

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Answer:

true

Explanation:

Answer:

Explanation:

What is a free body diagram?

Answer: a force diagram is a graphical illustration used to visualize the applied forces and resulting reactions on a body in a given condition

Drawing a free-body diagram for this problem

Answer: Look at the attached picture, ask me any questions if you are still confused. It is a little messy since I didn't have my pen.

Find its weight on Earth

Answer: The weight is dependent on the mass of the object and the gravitational constant on the planet. The gravitational constant, in this case, is 9.8.

   so the weight = mass * gravitational constant = m * g = 1000 * 9.8

                          = 9800 N

Hope that helps!

A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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Answer:

Phones as sunglasses with a mic. I put on my glasses and I say what's the weather today, The sunglasses will tell me the weather and can be charged just like phones

Explanation:

Answer:

This brightly colored fish is native to the Indo-Pacific from Australia north to southern Japan and south to Micronesia.  The lionfish is usually found in coral reefs of tropical waters, hovering in caves or near crevices.  Native regions as well as Savannah, Georgia; Palm Beach and Boca Raton, Florida; Long Island, New York; Bermuda and possibly Charleston. In southern Florida and off the coast of the Carolinas in early to mid 1990s.

Answer:I really don't know sorry

Explanation:

The brain signals for these voluntary actions originated in the cerebellum of your cousin's brain. The cerebellum is responsible for coordinating voluntary movements, such as the double-jump of your checker pieces, as well as controlling the timing and force of muscle contractions, allowing your cousin to triumphantly complete the move.

The brain signals for voluntary actions originated in the prefrontal cortex of your cousin's brain. The prefrontal cortex is the region of the brain that is responsible for voluntary action, problem-solving, decision-making, planning, and other cognitive processes that are essential for goal-directed behavior, memory, attention, and emotional regulation.

The prefrontal cortex is one of the most highly developed regions of the brain, and it plays a crucial role in human cognition and behavior. It is involved in many different tasks, including working memory, decision-making, attention, and reasoning.

The prefrontal cortex is located in the frontal lobe of the brain, and it is divided into several different regions that are involved in different functions. For example, the dorsolateral prefrontal cortex is involved in working memory and executive function, while the ventromedial prefrontal cortex is involved in emotional processing and social cognition.In summary, the brain signals for the voluntary actions that your cousin performed originated in the prefrontal cortex of his brain.

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The appropriate response is the heaviness of the fuel and or the typical force of the water acting on the oil, according to the supplied statement.

A bat pressing down on a ball is one example of how forces may be observed in daily life. Other examples include weight & force (i.e., the weight of something). the amount of pressure being applied when utilizing a brush to clean hair. the force your foot applies to the pedal when you are riding a bike.

Since oil has a lower density than water, it will naturally form a layer on the water's upper surface. Now, in accordance with Newton's law of action and reaction, the exerted by the pressure of the oil will act downward, leading to an equal but opposite acting as water does on the oil's surface.

The alternative is untrue because no one will ever create the ideal set of forces acting in concert.

The right answer is thus the volume of the oil or the usual force that the water applies to the oil.

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Kinetic energy is the energy when a object is in motion. ...  energy gets transferred to the object,  The energy transferred is kinetic energy, and it depends on the mass and speed.

Explanation:

Photochemical smog is formed when primary air pollutants interact with sunlight.

Photochemical smog is the result of the reaction between pollutants like  nitrogen oxides (NO), sunlight and volatile organic compound (VOC) in the atmosphere. The sources of NO are car exhaust, coal power plants, factory emissions, etc. This type of smog is also known by the name Los Angeles smog.

Air pollutants are the particles present dissolved in the air, which when inhaled by the organisms can cause serious health issues. These pollutants are :ozone, particulate matter, gaseous oxides, etc. These pollutants majorly affect the respiratory system of the humans.

Therefore, photochemical smog is a form of pollution created when vehicle exhaust interacts with sunlight.

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Jackson sells lemonade for $2 per cup. he paid $20 for supplies to sell 5 cups. What is the domain for this scenario

Answer:

My quiz said "by pushing for laws that helped improve working conditions and increase wages."

Explanation:

hopefully this helpes i dont really have an explanation i just got the question right on my quiz

Answer:

by pushing for laws that helped improve working conditions and increase wages. (got it right on usa test prep)

Explanation:

The power used by the weight lifter to lift the barbell to a height of 2 m in 3 seconds is 400 watts

We know already that power is the rate at which work is done. It is expressed

Power (P) = work (W) / time (t)

But

Work = force (F) × distance (d)

Therefore,

Power (P) = force (F) × distance (d) / time (t)

Using the above formula, we can obtain the power used to lift the barbell as follow:

Power (P) = force (F) × distance (d) / time (t)

Power = (600 × 2) / 3

Power = 1200 / 3

Power = 400 watts

Thus, the power used to lift the barbell is 400 watts

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