a driver traveling at 72 km/h sees a chicken dash out onto the road and slams on the brakes. accelerating at -10 m/s2, the car stops just in time 35 m down the road. what was the driver's reac­tion time

"Misplaced aggression" is the term for it. Not just athletes express their sadness and enlightenment at failing to succeed, but individuals do as well.

Simply "suck it up buttercup," keep pushing yourself, and hit the next pitch for a "double" when it comes.

When we are enlightened with the truth, all sorrow ends. We become aware that we are not the body experiencing physical discomfort after we reach enlightenment.

We are not the mind that daydreams, fears, worries, stresses, feels anxious or depressed. The ego that suffers from rage, hatred, and envy is not who we are.

Therefore, all pain ends at that very instant of enlightenment when we know that we are the Divine Soul, the Spark Of Unique Life. After attaining enlightenment, suffering is a given.

Yes, there are difficulties with the body's, mind's, and ego's senses. There can be no more pain even if we are still being tested to determine whether we have reached full enlightenment.

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As we know, Pv= nRT where,

P : pressure

V : volume

n : number of moles

R : constant

T : temperature

According to question PV is constant therefore if balloon floats to a higher altitude where the outside pressure is lower than Volume will increase as a result of Boyle's Law. Therefore Figure C represents the final volume.

What is altitude?

A measurement of altitude or height is the distance between a location or item and a reference datum, often in the vertical or "up" direction. Depending on the circumstance, many definitions and reference points are appropriate.

Therefore,

a balloon is filled with helium gas how would the balloon volume change if it floated to a higher altitude (p decreases, assume n and t are constant)?

As we know, Pv= nRT where,

P : pressure

V : volume

n : number of moles

R : constant

T : temperature

According to question PV is constant therefore if balloon floats to a higher altitude where the outside pressure is lower than Volume will increase as a result of Boyle's Law. Therefore Figure C represents the final volume.

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Answer:

Since the iodine is added as 1-anion, the number of electrons is 54( 53-(1-) =54

The speed of the car having kinetic energy 458,350 J  is 28.03m/s

What is What is Kinetic Energy ?

Kinetic energy is a type of power that a moving object or particle possesses. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force. A moving object or particle has kinetic energy, which depends on both its mass and its rate of motion. The type of motion can be vibration, rotation on an axis, translation (or travel along a path from one place to another), or any combination of these.

K.E = 1/2*m*v2

K.E = kinetic energy

m = mass

v = velocity/speed

458350 = 1/2*1167*v2

v2= 458350*2/1167

v = 28.03 m/s

The speed of the car having kinetic energy 458,350 J  is 28.03m/s

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Answer:

5.1 m

Explanation:

Assuming gravitational force is 9.8 m/s², the acceleration experience by the ball is -9.8 m/s²

The acceleration is negative because the ball is moving vertically upward and gravitational force acts vertically  downward.

The velocity of the ball at maximum height is 0 m/s when it will start falling back to ground at a positive acceleration of 9.8 m/s²

We can use the following formula to calculate the height the ball reaches

v² = u² + 2 a  d

where u is the initial velocity, v = final velocity, a = acceleration and d = displacement(in this case the vertical height from ground)

Final velocity is 0 since the ball has reached it maximum height and starts falling downward, Initial velocity u = 10 m/s

Plugging in values we get
0² = 10² - 2  x 9.8 x d

0 = 100 - 19.6d

Subtracting 100 from both sides

-100 = -4.9 d

Divide by -1 both sides
100 = 4.9d

d = 100/4.9 ≈ 5.1 m

So the ball will reach a height of 5.1m

Answer:

a1)gravity

not sure on others

Explanation:

cause the gravity force pulls u down

Answer:

a) i) Gravitational force

ii) Air resistance

b) (I cannot understand what is the question saying but the unit of acceleration is m/[tex]s^{2}[/tex] or [tex]ms^{-2}[/tex])

ii) Because when the parachutist is falling, the gravitational force is pulling him down. But the air resistance is pushing him upwards acting against the gravitational force resulting in a decreasing acceleration.

iii) This is because soon the air resistance catches up with that of the gravitational force and it cancels the gravitational force so he is falling in a constant velocity. This is called terminal velocity when the gravitational force gets cancelled resulting in a free fall where his weight brings him down.

The average velocity of the cart for each fan speed to the nearest tenth is as follows:

An average velocity can be defined as the total distance covered by a physical object divided by the total time taken.

Mathematically, the average velocity of a physical object can be calculated by using this formula:

Average velocity = Total distance/Total time

The average velocity of the cart with low fan speed is given by:

Average velocity = 500/7.4

Average velocity = 67.57 ≈ 67.6 cm/s.

Also, the average velocity of the cart with medium fan speed is given by:

Average velocity = 500/6.4

Average velocity = 78.13 ≈ 78.1 cm/s.

Lastly, the average velocity of the cart with high fan speed is given by:

Average velocity = 500/5.5

Average velocity = 90.91 ≈ 90.9 cm/s.

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The magnitude of the normal force that the floor exerts on the crate is 980 N.

The normal force of an object the perpendicular force of the object due to its weight. The weight of the force of the object due force of gravity.

According to Newton's third law of motion, the normal force of an object is equal and opposite to the weight of the object.

Mathematically, the formula for normal force is given as;

W = Fn

mg = Fn

where;

Substitute the given parameters and solve for normal force that the floor exerts on the crate.

Fn = (m1 + m2)g

where;

Fn = (40 + 60)9.8

Fn = (100)9.8

Fn = 980 N

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Magma is the layer of the mantle that moves with the convection current.

Magma is the molten rock that is present in the mantle below the earth's crust. The high amount of heat and pressure inside the earth leads to hot magma that flows in convection currents. These currents cause the movement of the tectonic plates that formed the earth's crust. Mantle convection is defined as the movement of the mantle that transfers heat from one layer to another. The mantle is heated from the lower side but it is cooled from the upper side so the temperature decreases over long periods.

So we can conclude that the layer of the mantle that moves with the convection current is the magma layer.

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The amount of work done, given that the block moved to a distance of 3 m is 38.97 J

Work is defined as the product of force and distance moved in the direction of the force.

Work done (Wd) = force (F) × distance (d)

Wd = fd

Considering angle projection,

Wd = FdCosθ

With the above formula, we can detertmine the work done as follow:

Wd = FdCosθ

Wd = 15 × 3 × Cos 30

Wd = 45 × Cos 30

Wd = 38.97 J

Therefore, we can conclude that the work done is 38.97 J

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Answer:

no se entiende nada lo siento

The main difference between the Bohr model and the electron cloud model is explained as, in Bohr's model, orbital paths around the nucleus are treated as discrete electron energy levels but the electron cloud model is a group of electrons circulating around a nucleus or a molecule. Usually refers to the valence electrons.

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    Exercises that register between 3 and 6 METs are considered moderate- intensity activities because they get you moving quickly enough or vigorously enough to burn off three to six times as much energy per minute as you do while you're sitting still.

Chronic Heart Disease

     Your chance of developing these diseases can be decreased by engaging in at least 150 minutes of moderate physical activity each week. By engaging in additional exercise, you can further lower your risk. Additionally, regular exercise helps lower blood pressure and lower cholesterol.

  Your heart rate will rise while you engage in moderate aerobic activity, and you'll also feel warmer and breathe more quickly than usual.

This may entail taking a quick stroll.

A quick method to gauge relative intensity is the conversation test. In general, you can converse but not sing while engaging in moderate-intensity exercise. In general, you won't be able to speak for more than a few words without pausing to take a breath if you're engaging in vigorous-intensity activities.

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The new speed of the car after the collision is 13.61 m/s.

The change in the kinetic energy is  -619,764.92 J.

The new speed of the car can be determined by applying the principle of conservation of linear momentum as follows;

Pi = Pf

m₁v₁ + m₂v₂ = v(m₁ + m₂)

where;

(12100 x 19) + (4790 x 0) = v(12100 + 4790)

229,900 = v(16,890)

v = 229,900 / 16,890

v = 13.61 m/s

The change in the kinetic energy is calculated as follows;

K.Ei = ¹/₂m₁v₁² + ¹/₂m₂v₂²

K.Ei = ¹/₂(12100)(19²)

K.Ei = 2,184,050 J

K.Ef = ¹/₂v²(m₁ + m₂)

K.Ef = ¹/₂(13.61²)(12100 + 4790)

K.Ef = 1,564,285.1 J

The change in the kinetic energy is calculated as follows;

ΔK.E = K.Ef - K.Ei

ΔK.E = 1,564,285.1 J - 2,184,050 J

ΔK.E = -619,764.92 J

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1. What is the direction of the induced current in the front side of the coil?

a. Left

b. Right

c. Up

2. in what direction is the magnet moving?

b. Toward

c. Up

d. Down

Hope it helps

To determine the direction of the induced current in the front side of the coil and the direction of the magnet's movement, we can use Faraday's law of electromagnetic induction, which states that an induced current is produced in a conductor when it is exposed to a changing magnetic field.

1.) Direction of the induced current in the front side of the coil:

The direction of the induced current can be determined using Lenz's law, which states that the induced current will flow in a direction that opposes the change that caused it.

If the magnet is moving away from the front side of the coil:

The magnetic field through the coil is decreasing. According to Lenz's law, the induced current will flow in a direction to create a magnetic field that opposes this decrease. Applying the right-hand rule for the direction of the magnetic field around a wire, we can determine that the induced current in the front side of the coil will flow counterclockwise when viewed from the front. Therefore, the answer is option a. Left.

2.) If the magnet is moving toward the front side of the coil:

The magnetic field through the coil is increasing. According to Lenz's law, the induced current will flow in a direction to create a magnetic field that opposes this increase. Applying the right-hand rule for the direction of the magnetic field around a wire, we can determine that the induced current in the front side of the coil will flow clockwise when viewed from the front. Therefore, the answer is option b. Right.

Direction of the magnet's movement:

Based on the given information, the options provided (Away, Toward, Up, Down) are not sufficient to determine the exact direction of the magnet's movement. More specific information is needed to determine the direction of the magnet's movement.

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Marble's final speed,  Vf = 0.88 m/s

Vector difference between the final and initial positions of an object is displacement. It is different from the distance the object has travelled along the way.

Velocity is a vector quantity and is defined as the displacement that an object undergoes with respect to time . Meter per second is the standard unit of velocity.

Given distance= 220cm and

time = 5 sec

We can calculate acceleration of the marble by using 2nd equation of motion:

s = Vi t + (1/2)at²

s = distance covered = 220 cm = 2.2 m

Let Vi = initial Velocity

= 0 m/s (as the marble was initially at rest)

To find acceleration, a  = ?

2.2 m = (0 m/s)(5 s) + (1/2)(a)(5 s)²

a = (2.2 m)(2) / (5 s)²

a = 0.176 m/s²

Using 1st equation of motion for final velocity (Vf)

Vf = Vi + at

Vf = 0 m/s + (0.176 m/s²)(5 s)

Vf = 0.88 m/s

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If there were two more carts of equal size and mass added to the ride, then the coaster’s kinetic energy will be decreased at location X because of increasing weight.

Kinetic energy is a type of energy that is present in an object because of its motion. If work is done on an object by applying a force, the object's speed increases and therefore gains kinetic energy. The two main factors that affect kinetic energy are the mass and speed of that object because the motion of an object depends on how fast the object is traveling and it also depends on the mass. But in this case, the mass is added to the object but the force remains the same then the kinetic energy of that object decreases.

So we can conclude that the kinetic energy will decrease when two carts of having equal size and mass.

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Explanation:

velocity=distance/time

v=10m/1.4sec

Answer:

13 . 7 m/s

Explanation:

v = a t

  =  acceleration    time

  =   9.8 m/s^2   *  1.4 s = 13.7 m/s

When the angle between the force and the displacement is more than 90 degrees, work might be negative. It can also be zero; if = 90, this will occur.

The spring force, which defines the force applied to an object by the end of an ideal spring, is the most well-known illustration of a force whose value varies on position. An ideal spring will exert a force on the object attached to one end that is proportionate to how much it is stretched, and a force that is proportional to how much it is compressed on the object linked to the other end.

The force must function in order to accomplish its mission have a component that is parallel to the motion's direction or the opposite.

We must compute an integral (a sum) to determine the work done if the force acting on the object is not constant while it is moving.

Assume that an external force with the x component Fx(x) is acting on the object, causing it to travel in a straight line (let's say along the x axis, from xi to xf). (Or, we understand the force Fx to be a function of x.)

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Answer:

Final coordinates in meters : (2.17, -8.6)

Explanation:

We have the equation

displacement  Δd = average velocity x time

In this case there are two components of displacement corresponding to the two components of average velocity

[tex]v_{avg}(x) = 1.70 \; m/s[/tex]

[tex]v_{avg}(y) = -1.50 \; m/s[/tex]

Time traveled is t = 2.60s

So the x component is toward east (+x) axis and y component is due south(-y axis)

[tex]\sf{x \;displacement \;} \Delta_x = v_{avg}(x) x t= 1.70m/s \; \times \; 2.60 = 4.42 m\\\\[/tex]

Since the original x-coordinate was at -2.25m, the end x coordinate is

x =  -2.25 + 4.2 = 2.17

The y-displacement
[tex]\sf{y \;displacement \;} \Delta_y = v_{avg}(y) x t\\\\ = - 1.50m/s \; \times \; 2.60 = - 3.9 m\\\\\\\\[/tex]

The starting y-coordinate was at y = -4.70m

So final y-coordinate = -4.7 - 3.9 = -8.6m

Final coordinates in meters : (2.17, -8.6)

He should bow his boat at 90° to cross the river.

While the water will push him in side ways, it will not affect the time it takes to actually cross the river.

Hence, the correct answer is  90°.

Factors that have an effect on the velocity of a river consist of the slope gradient, the roughness of the channel, and tides. Rivers generally tend to drift from a higher elevation to a lower elevation. The gradient is the drop of the elevation of a river.

Reverberation is the time taken for the sound to fall beneath the minimal audibility measured from the immediate whilst the supply stopped sounding. Therefore if the reverberation time will become too massive it produces an echo.

Due to velocity of water drift in river, a person either swimming or floating stationary within the river reports a pushing force alongside the flow direction.

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By the relation of KE = ½mv²,

the kinetic energy in a body is directly proportional to its mass and square of velocity.

Organelles are small structures present inside the cell body in order to regulate the various functions of cell .

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The acceleration during uniform motion in ft/sec is -98.42.

We need to know about the uniform motion to solve this problem. The uniform motion is an object's motion under acceleration. It should follow the rule

vt = vo + a . t

vt² = vo² + 2a . s

s = vo . t + 1/2 . a . t²

where vt is final velocity, vo is initial velocity, a is acceleration, t is time and s is displacement.

From the question above, we know that

vo = 9 m/s

t = 0.3 s

vt = 0 m/s

Calculate the acceleration in m/s

vt = vo + at

0 = 9 + a.0.3

a = -9/0.3

a = -30 m/s²

Convert to feet/s

a = -30 m/s

a = -98.42 ft/s

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Answer

(D) the vectors must be the same size and pointing opposite to each other

The Point on the x-axis that the net forces from the other two charges acting on a third charge, q°, will be equal to zero is

x=1.72units

This is further explained below.

Generally, The total amount of forces exerted on an item is referred to as its net force. The total of N forces exerted on an item is given in the equation below.

The total force operating on an item, which may include a number of different forces, is known as the net force acting on the object.

The n forces operating on an item are added up in this equation. According to this formula, the amount of net force exerted on an item is equal to the mass times the acceleration of the object.

+3q  <------>+11q

[tex]&\frac{1}{4 \pi E v}\left(\frac{3 q}{x^2}-\frac{11 q}{(5-x)^2}\right)=0 \\\\&\frac{3}{x^2}=\frac{11 q}{(5-x)^2} \\&\frac{5-x}{x}=\sqrt{\frac{11}{3}}=1.91 \\\\[/tex]

5-x=1.91 x

=1.715

=1.72units

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The particles of a solid are in fixed positions, the particles of a liquid do not translate to a large extent while the particles of a gas has extreme degree of freedom.

We have to refer to the kinetic molecular theory at this point. We would recall from the theory that the particles that compose a substance are said to be in a constant random motion. As such, the molecules of a gas do have the greatest degree of freedom thus they move about freely. On the other hand, the molecules that compose a solid have the least degree of freedom as they remain in their fixed positions and can only vibrate.

Billiard balls are free to have about and they move at high speeds since they are spaced from each other. This is the nature of the interaction between the molecules of a gas.

Students in a hall way that is crowded can be used to approximate liquid particles because they do not posses a high degree of freedom but the molecules could move a few inches away from each other.

For a solid. an apt approximation is the  audience in a movie theater. This is because, they can only remain on their seats just as the particles in a solid retain a fixed position and do not translate.

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A rock climber stands on the top of a 53 m high cliff overhanging a pool of water, so for 3.1 seconds, after which the second stone hit the water.

The overall distance the object covers in a given amount of time is its average speed. The scalar quantity represents the average speed. It does not have direction; it is represented by magnitude.

Average Speed= [tex]Total\ Distance/ Total\ time[/tex]

According to the question, the given values are :

v₁ = 1.5 m/s

y₂ = 52 m

y₁ = 0 m

Acceleration, a = 9.8 m/s²

Use Formula :

y₂ = y₁ + v₁t + 0.5 at²

52 = 0 + 1.5t + 0.5 (9.8)t²

4.9 t² + 1.5 t - 52 = 0

[tex]t=-b\frac{+}\ \sqrt{b^2-4ac}/2a[/tex]

t = -1.5 + [tex]\sqrt{2.25+1019.2}[/tex]/9.8

t = (-1.5 + 31.9)/9.8

t = 3.10 seconds.

Hence, the time period will be 3.10 seconds.

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