I already found Rx = -0.2 and Ry = -3. The magnitude is the square root of 0.2^2 + 3^2 = 3.01 I only need help understanding why when I plus in to solve for the direction why it won’t accept 86.2 when tan^-1(-3/0.2) doesn’t work. Please help explain to me the real answer or how I’m wrong. Thank you in advance

tTO = 26.8 sis the time needed to take off a plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long.

Time is the ongoing pattern of existence and things that happen in what seems to be an unbreakable succession from the past through the present and into the future. It is a constituent quantity of many measurements that are used to compare the lengths of events or the gaps between them, to compare the sequence of occurrences, and to measure the rates at which certain quantities in the physical world or in conscious experience change. In addition to the three spatial dimensions, time is frequently considered a fourth dimension.

Although time has long been a crucial topic for research in philosophy, theology, and science, no definition of time that is universally applicable and free of circularity has ever been reached by academics. However, a number of different industries and areas, including business, industry, sports, the sciences, and the performing arts, all incorporate.

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Answer:

As the full spectrum of visible light travels through a prism, the wavelengths separate into the colors of the rainbow because each color is a different wavelength.

Explanation:

hop this helps

Answer:

Light is made up of different wavelengths, or colors, and white light is a combination of all of them. When a ray of white sunlight hits a patch of beach ball, the paint absorbs most of the wavelengths. It reflects the rest. For example, if the patch is blue, it reflects the blue wavelengths and absorbs all the others.

Answer:

You grab (grasp or seize suddenly and roughly.) the pizza with your toes

Explanation:

Answer:

First, you have to wash your toes to get all the germs off.

Next, make sure you have a good grip on the pizza.

Then, make sure you are in a comfortable position.

Next, wrap your leg around your neck so the pizza can reach.

Finally, you can enjoy your pizza.

Hope this helped!

A change in temperature frequently causes substances to change phases. Most substances are solid at low temperatures; as the temperature rises, they become liquid; and at still greater temperatures, they become gaseous.

Melting is the conversion of a solid into a liquid (an older term that you may see sometimes is fusion). Solidification is the process where a liquid turns into a solid. The melting point, or the temperature at which a pure substance begins to melt, is a property of that substance. A solid must expend energy to become a liquid. A specific quantity of energy is required by every pure substance in order to transform from a solid to a liquid. This amount is known as the substance's enthalpy of fusion (or heat of fusion).

The complete question is- The diagram shows how states of matter can change when energy is either added or removed.

System before change

System after change

00000

00000

00000

00000

00000

00000

00000

All of these statements below are true EXCEPT

Energy was added to the matter causing the particle movement to increase.

The matter changed states which is a physical change.

The particles in the matter before the change had more energy than after the change.

The particles in the matter before the change had less energy than after the change.

the diagram is attached below.

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The final position of the car with an initial position of x = 83.2 m which undergoes a displacement of - 153 m is

We know that,

s = [tex]x_{2}[/tex] - [tex]x_{1}[/tex]

where,

s = Displacement

[tex]x_{2}[/tex] = Final position

[tex]x_{1}[/tex] = Initial position

Given that,

[tex]x_{1}[/tex] = 83.2 m

s = - 153 m

[tex]x_{2}[/tex] = -153 + 83.2

[tex]x_{2}[/tex] = - 69.8 m

Displacement is the the distance between initial and final positions of the object. It is denoted by s.

Therefore, the final position of the car is - 69.8 m

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Answer:

To convert is to change measuring units so that what is being measured may be more easily measured etc.

Answer:

A conversion factor is a number used to change one set of units to another by multiplying or dividing.

Explanation:

The appropriate conversion factor to an equal value must be used when a conversion is necessary.

For example, to convert inches to feet, the appropriate conversion value is 12 inches, equal to 1 foot.

Answer:

The moon should be in the New phase.

Explanation:

The ratio of (ε true/ε engr) = (1.2556/2.51) = 0.5002

So, the engineering strain is around 0.5002 bit wrong from the value of the true strain. This calculated value of difference is known as the extensional deformation.

For finding out the Engineering strain,

Engineering strain is a unit used to describe how much a material deforms when subjected to a specific force. It is equal to the amount of deformation divided by the material's initial length in the direction of the applied force.

⇒ε(engineering) = ΔL/L₀

⇒Lₓ= final length = 3.51 L₀

⇒L₀ = original length = L₀

⇒ΔL = Lₓ- L₀

        = 3.51 L₀ - L₀

        = 2.51 L₀

⇒ε(engineering) = ΔL/L₀

                            = (2.51L₀)/L₀  

                            = 2.51

For finding out the True Strain,

Deformation is measured by True Strain. It can be calculated by integrating the strain across short time intervals and adding them up. Hence,

⇒ε(true) = In (Lₓ/L₀)

⇒Lₓ = 3.51L₀

⇒L₀ = L₀

⇒ε(true) = In (Lₓ/L₀)

              = In (3.51L₀/L₀)

              = In 3.51

              = 1.2556

So, dividing both the values, we get

(ε true/ε engr) = (1.2556/2.51) = 0.5002

The complete question is as follows:

The elastic cords used for bungee jumping are designed to endure large strains. Consider a bungee cord that stretches to a maximum length 3.51 times the original length. There are different ways to report this extensional deformation. Calculate how wrong' the engineering strain is compared to the true strain by evaluating the ratio: ε true/ε engr

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The average acceleration of the baseball while it is compressing the glove is 1008 10⁻³ m / s². The kinematic formula used is v² = v₀² - 2 a x.

Acceleration is the rate of change in a moving object's speed and direction over time. When a point or object accelerates or decelerates, it is moving straight forward. Motion on a circle increases despite the same speed because the direction is always changing.

Because the acceleration occurs in the opposite direction as the speed and the end speed is zero, the sign is negative.

0 = v₀² - 2 an x

a = v₀² / 2x

Consider converting the magnitudes to the SI system.

x = 2.4 mm (1 meter / 103 mm) = 2.4 103 m

Let's compute.

a = 2.2²/2 2.4 10⁻³

a = 1008 10⁻³ m / s²

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The average speed of bunny's entire trip is 0.52 m/s and her average velocity is 0 m/s.

The average speed of an object is the ratio of total distance travelled to the total time of motion of the object.

V(speed) = total distance / total time of motion

V(speed) = (6 m + 6 m) / (11 s + 12 s)

V(speed) = (12 m) / (23 s)

V(speed) = 0.52 m/s

The average velocity of an object is the ratio of total displacement to total time of motion of the object.

V(velocity) = total displacement / total time of motion

V(velocity) = (6 m - 6m) / (11 s + 12 s)

V(velocity) = (0 m) / (23 s)

V(velocity) = 0 m/s

Thus, the average speed of bunny's entire trip is 0.52 m/s and her average velocity is 0 m/s.

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Answer:

130+60=190

Explanation:

i.e. if you asked for the distance covered by the person

The speed of the ball when it left his foot is 11.13 m/s.

The given parameters;

distance of the goal, d = 17 m

angle of projection of the ball, = 38°

height of the cross bar, H = 2.4 m

The speed of the projectile will be calculated by applying the formula for maximum height reached by a projectile;

u=2x9.8x2.4/sin2(38)

u=11.13

Thus, the speed of the ball when it left his foot is 11.13 m/s.

What is projectile?

An object that is driven by the application of an external force and then moves freely while being affected by gravity and air resistance is referred to as a projectile. Despite the fact that all items traveling through space are projectiles, they are frequently used in sports and warfare.

Therefore,

a soccer player takes a free kick from a spot that is 29 m from the goal. the ball leaves his foot at an angle of 41 ∘, and it eventually hits the crossbar of the goal, which is 2.4 m from the ground.

u=2x9.8x2.4/sin2(38)

u=11.13

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Answer:

I got you.  its lithium (Li), sodium (Na) potassium (K)

Explanation:

They are all in the same group of the periodic table just look it up and look at group 1

The density of the neutron star is  ρ = [tex]7.733[/tex]×[tex]10^{14}[/tex] [tex]g/cm^{3}[/tex].

The volume of the neutron star is

V=([tex]4\pi /3[/tex])×[tex]R^{3}[/tex]

V= [tex]25.72^{17} cm^{3}[/tex]

Now the density of the neutron star is

ρ = M/V

ρ =  [tex]7.733[/tex]×[tex]10^{14}[/tex]g/[tex]cm^{3}[/tex]

The collapsing core of a large supergiant star with a total mass of between 10 and 25 solar masses—possibly even more if the star was very metal-rich—is what we refer to as a neutron star. Neutron stars are the tiniest and densest class of stellar objects currently known, with the exception of black holes and other hypothetical phenomena.

Although the galaxy may contain hundreds of millions of ancient neutron stars, only about 1,000 pulsars are known to exist. Although the enormous pressures found at neutron star cores may be similar to those at the moment of the big bang, conditions like this cannot be replicated on Earth.

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The gravitational force and the electromagnetic force are the two forces that have infinite ranges.

There are four fundamental forces in nature. They are:

The strength and range of the fundamental forces are mentioned in the table given in the adjoining image.

Out of the four forces, two forces are there whose range is infinite i.e gravitational force and electromagnetic force, and the other two forces i.e., weak nuclear force and strong nuclear force have extremely short ranges.

Thus, both gravitational force and electromagnetic force are two forces that have infinite ranges.

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11 m

Explanation:

d = 1/2 a t^2

  = 1/2 (9.81)(1.5)^2 =11 m

a. The car travel 64m in 8s.

b .It takes 20s to cover a distance of 160m

we know that speed is equal to distance travelled by an object by time taken.

s=d/t

a. it is given that the speed of the car is 8m/s and the time it takes is 8s so here the distance will be

d=s*t

= 8x8

=64m

b. here it is given that the car travels a distance of 160 m and it has a speed of 8m/s so the time taken by the car to travel 160 m will be

t=d/s

=160/8

=20s

So from the above equations it is clear that s=d/t and the distance covered is 64m in a. and 20s in b.  

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The gas must be heated to 137˚C to occupy a volume of 557 ml.

The gas pressure will remain constant while the piston is free to move. So, we can resolve this using Charles' Law.

Charles' law states that, if the pressure is constant, the volume occupied by a fixed quantity of gas is precisely proportional to its absolute temperature.

The ideal gas rule has an exception known as Charle's law.

The law is applicable to ideal gases with constant pressure but varying temperatures and volumes.

The equation of Charles' law is PV = k where k may is constant.

When measurements are taken under constant pressure, Charles' law establishes a relationship between a gas's volume and temperature.

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The total length of the brass used to make the girls neck rings= 840cm

The radius of the brass = 20 cm

The volume of the cylinder = 15,086cm³

The mass of brass = 131700.78g

The number of turns that makes up the neck rings = 21

The circumference of each turn = 40cm

Therefore the total length = 40 × 21 = 840cm

The height of the brass= 12cm

The circumference of the turns= 40cm

Therefore the radius = 40/2 = 20cm

The formula for the volume of cylinder,

V = πr²h

r = 20cm

h = 12cm

V= 22/7 × 20² × 12

V = 22× 400×12/7

V= 105600/7

V= 15,086cm³

Density =8.73 g/cm³

Volume = 15,086cm³

mass= density × volume

mass= 8.73 × 15,086

Mass = 131,700.78g

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To obtain the approximate short-circuit current values when two hot conductors of a 3-phase system are shorted together, use _maximum percent of the 3-phase current value.

short circuit- It is an electrical circuit in which current finds a way to bypass the appliances on a path that has little or no resistance.

In the 3- phase system, there are three power wires which carries load.

most common. Types of three phase system are known as wye and delta.

To obtain the approximate short-circuit current values when two hot conductors of a 3-phase system are shorted together, use _maximum percent of the 3-phase current value.

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The distance ran by the runner in the 2 seconds is 2·A

The speed of the runner at the end of the 2 seconds is 2·A

Calculation

The given information are;

The distance the sprinter is running = 100 m

The initial constant acceleration of the sprinter, a = A

The duration of the initial acceleration, t = 2 s

The initial speed of the printer, u = 0 (The sprinter starts from rest)

The rate with which the sprinter then runs with to the end = Constant speed

Therefor, we have, from the equation of motion;

s = u × t + 1/2 × a × t²

Where;

s = The distance ran by the sprinter

∴ at t = 2 seconds, we have;

s = 0 × 2 + 1/2 × A × 2² = 1/2 × A × 4 = 2·A

The distance ran by the runner in the 2 seconds = 2·A

The speed, v, of the runner at the end of the 2 seconds is given as follows;

v = u + a × t

When t = 2 seconds, we have;

v = 0 + A × 2 = 2·A

The speed of the runner at the end of the 2 seconds = 2·A.

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Assuming constant acceleration, the distance travelled in the first 4.5s is:

0.5*5.0*4.5 = 11.25m

The distance travelled in the next 4.5s is:

5.0*4.5 = 22.5m

The total distance travelled is:

11.25 + 22.5 = 33.75m

Psychology researchers are using deductive reasoning.

In psychological researches, reasoning is important to reach conclusions. Two important types of reasoning used by researchers are: Inductive reasoning and deductive reasoning.

In deductive reasoning, psychological research starts with a hypothesis formed from a general theory and then try to establish it true in real cases. They start from predicted conclusions or assumptions first and then gather data through careful observations to support the hypothesis. After analyzing the data thus collected, they will prove their assumptions true in specific cases of the theory. So deductive reasoning is used to prove general ideas in empirical observations.

However, inductive reasoning is opposite to this approach. It incorporates the method of reaching conclusions by beginning with observed data to make new theories.

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The mass of the particle having a de Broglie wavelength of 2.25×10⁻⁹ m and moving with a speed of 2.34×10⁶ m/s is 1.26×10⁻³¹ kg.

The de Broglie equation relating the momentum of a particle with its de Broglie wavelength is given by:

λ=h/Mv

where 'λ' is de Broglie wavelength, 'h' is Planck's constant having its value as 6.626×10⁻³⁴ kg-m²/s and 'M' is the mass of the particle.

Using the above equation and the values of λ=2.25×10⁻⁹ m, v=2.34×10⁶ m/s, and h=6.626×10⁻³⁴ kg-m²/s;

λ=h/Mv

2.25×10⁻⁹ m=(6.626×10⁻³⁴ kg-m²/s)/(M×2.34×10⁶ m/s)

=>M=(6.626×10⁻³⁴ kg-m²/s)/(2.25×10⁻⁹ m×2.34×10⁶ m/s)

=>M=(6.626×10⁻³⁴ kg-m²/s)/(5.265×10⁻³ m²/s)

=>M=1.26×10⁻³¹ kg

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The speed of his take off is 43.2 m/s if he left the take-off ramp at 120° to the horizontal and that the take-off and landing heights are the same. neglecting air drag.

Velocity is the directional speed of a moving item as an indication of its rate of change in position as seen from a specific frame of reference and measured by a specific time standard (e.g., 60 km/h northbound). The idea of velocity is crucial in kinematics, the part of classical mechanics that explains the motion of bodies.

A physical vector quantity called velocity requires both magnitude and direction to be defined. Speed is a coherent derived unit that expresses the scalar absolute value (magnitude) of velocity. Its quantity is expressed in SI (metric system) units of metres per second (m/s or ms1). For example, "5 meters per second" is a scalar while "5 meters per second east" is a vector.

We have given that

R = 77.0m

[tex]\theta_0[/tex] = 12.0°

The horizontal range of such projectile R is given from the relation :

[tex]R = \frac{v^2_0}{g} sin 2 \theta_0[/tex]

Here, [tex]v_0[/tex] is velocity of take-off & [tex]\theta_0[/tex] is the angle of take-off

With this in mind,

[tex]v_0[/tex] = [tex]\sqrt{\frac{gR}{sin2\theta_0}[/tex]

    = [tex]\sqrt{\frac{(9.8 m/s^2)(77m)}{sin24}[/tex]

    = 43.2 m/s

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Charge of an electron, e = 1.60217662 × 10-19 coulombs whereas to calculate the charge of an electron it is not fixed as it may vary.

The charge of the electron is comparable to the size of the rudimentary charge (e) but bears a negative sign. Since the esteem of the rudimentary charge is generally 1.602 x 10-19 coulombs (C), at that point the charge of the electron is -1.602 x 10-19 C.

When communicated in nuclear units, the basic charge takes the esteem of solidarity, i.e., e = 1. In this way, the electron’s charge can be signified by -e. Even though the proton is much more gigantic than the electron, it was as it was including a charge of e.

Thus, impartial particles continuously bear the same number of protons and electrons.

JJ Thomson is the undisputed pioneer of the electron. Be that as it may, despite all those tests he performed on it, he might as it was overseen getting the electron’s charge to mass proportion.

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If the height of the image formed is 4cm, the distance of the image from the mirror is - 24 cm

According to mirror formula,

[tex]\frac{1}{f} = \frac{1}{v} + \frac{1}{u}[/tex]

f = Focal length

v = Image distance

u = Object Image distance

m = Magnification

[tex]h_{o}[/tex] = Object height

[tex]h_{i}[/tex] = Image height

f = - 8 cm

u = - 12 cm

[tex]h_{o}[/tex] = 2 cm

[tex]h_{i}[/tex] = 4 cm

1 / ( - 8 ) = 1 / v - 1 / 12

1 / v = - 1 / 24

v = - 24 cm

The formula used to relate focal length with image and object length is mirror formula. This formula can be used for both plane mirror and spherical mirrors such as concave and convex mirrors.

Therefore, the distance of the image from the mirror is - 24 cm

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Answer:

1.) B

2.) Polar Regions or high altitudes.

Explanation:

The Greek philosopher Democritus, but not widely accepted until modern times.

According to history, the concept that all matter is composed of atoms was first proposed by: The Greek philosopher Democritus, but not widely accepted until modern times.

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