What is the length of the x-component of the vector shown below?
34°
8
OA. 4.5
OB. 6.6
OC. 5.4
OD. 8

The statement best describes the purpose of the experiment is A ) To relate the type of box material to the temperature of air within the box

Here, two boxes of same size is exposed to sunlight for the same amount of time. The only different factor is the material of the box. So, only factors relating to the material of box might change. The temperature of air inside the box will change due to the material of box.  

The glass allows up to 90 % of visible light and 72 % of UV light to pass through whereas plastic does not allow UV light to pass through. So there will be a temperature difference between the air in two boxes made of glass and clear plastic.

Therefore, the purpose of this experiment is to relate the type of box material to the temperature of air within the box ( A )

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Answer:

Normal force

Friction force

Gravity force

Explanation:

1.Friction force F is the sum of all the horizontal tire forces.

2.Normal force R is the sum of all normal tire forces applied by ground on the vehicle in the r direction

3gravity g =mgk

Answer:

1. Time

2.Energy

3.speed

Explanation:

1.time : as the driver moves every seconds the driver move is counted and know as time he can drive for an hr

2. Energy : the strength the driver put In to make the car move is energy

3. Speed : speed is the acceleration the driver uses

Answer:

Water

Explanation:

There is one Oxygen Atom and two Hydrogen molecules. The molecule is Dihydrogen Monoxide, commonly known as water.

(A) Salad, is not a homogeneous mixture.

If the chemical makeup of a combination remains constant throughout, it is considered to be homogenous. Homogeneous mixtures and pure substances are sometimes confused with one another since they are both uniforms. The uniformity of the substance's makeup matters. The amount of salt in the water can vary from sample to sample.

All solutions would be regarded as homogenous since the dissolved ingredient is distributed uniformly across the entire solution. Since none of the components of the combination have interacted with one another, the identities of the individual materials have not changed.

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Answer: 8800

Explanation:

There are two ways to solve this question.

1. Use the algorithm method which is:

First, multiply the 4 in the ones place to the zero in the one's place. Second, multiply the 4 in the ones place by the 0 in the tens place. Third, multiply the 4 in the ones place by the 2 in the hundreds place. you should get 800. next put a zero underneath the 800 in the ones place.

Next, multiply the 4 in the tens place to the 0 in the ones place of the 200. Then, multiply the same 4 to the zero in the tens place. After that, multiply the 4 of the tens place to the 2 in the hundreds place. You should write all these digits underneath your 800. Finally, add everything up and you should get your final answer of 8,800.

 200

 x44

-------------

 800

8,000

------------

8,000

2. Another way to solve this problem is by breaking it up:

First, multiply 44 and 100 which is 4400. Then, multiply 44 and 100 again which is 4400. Add both numbers together which equals 8,800. We broke up 200 into 100's to make it easier to solve.

The correct answer is Atoms cannot be created or destroyed.

Every element in space is made up of tiny, indivisible particles, which are invisible to the unaided eye, according to Dalton's atomic theory. These objects are referred to as atoms. Because "Atoms cannot be made nor destroyed by the human being," they are indestructible. The behaviour of an atom in one element differs from the behaviour of atoms in all other elements even though all the elements in an atom have the same mass.The leading philosophers of the day disagreed with Dalton's theory since it had some flaws. In that case, Aristotle fully disagreed, asserting that matter consisted of the four elements earth, wind, water, and fire. Scientists then adopted this view. The scientific community had now accepted atomic theory, but J. J. Thomson's finding in 1897 led to the next development. In his hypothesis, he described atoms as equally packed spheres of positively charged material that are filled with negatively charged electrons.

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The value of spring constant for spring a and spring b is 531.70 and  52610.52 respectively. As the value of spring constant for Spring b is greater than a, So it is more stiffer.

A spring's "spring constant" is a property that quantifies the relationship between the force acting on the spring and the displacement it produces. In other words, it characterizes a spring's stiffness and the extent of its range of motion.

a) For spring a,

Given, the extended length = 9.4cm = 0.094m

mass = 510 g = 0.51kg

For spring b,

The extended length = 0.95mm = 0.00095m

mass = 5.1 kg

The force acting on both springs will be -

For spring a,

F = mg      (taking g = 9.8m/s²)

where m = mass and g = acceleration due to gravity

= 0.51 × 9.8

= 4.998N

Similarly, for spring b,

F = mg

= 5.1 ×  9.8

= 49.98N

The Hooke's law gives us -

F = - Kx

We are to calculate K here,

k = F / x

k = 4.998 / 0.0094

k = 531.70

The value of spring constant for Spring a = 531.70

For spring b,

k = F/x

k = 49.98 / 0.00095

k = 52610.52

The value of spring constant for Spring b = 531.70

b) As the value of spring constant for Spring b is greater than a, So it is more stiffer.

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The work required to move a charge q from the other vertex to the center of the line joining the fixed charges is zero.

The charge on two vertices of the equilateral triangle are Q and -Q which is fixed. On the other vertex is a point charge q. The work done to move the point charge q from the vertex to the midpoint of other two charges Q and -Q is the change in potential energy of the charge q.

We know that,

U = q V

V = k q / r

where,

U = Electric potential energy of a charge

V = Electric potential at a point due to a point charge    

k = Coulomb's constant

r = Distance

Change in potential energy of charge q, ΔU = q ΔV

ΔU = q ( [tex]V_{f}[/tex] - [tex]V_{i}[/tex] )

Electric Potential at the midpoint of charges Q and -Q,

[tex]V_{f}[/tex] = k Q / ( a / 2 ) + k ( - Q ) / ( a / 2 ) = 0

Electric Potential at the vertex of charges q,

[tex]V_{i}[/tex] = k q / a + k ( - q ) / a = 0

ΔU = 0

The given question is incomplete. The complete question is:

Two particle with charges Q and -Q are fixed at the vertices of an equilateral triangle with sides of length a, the work required to move a particle with a charge q from the other vertex to the center of the line joining the fixed charges is?

Therefore, the work required to move a charge q from the other vertex to the center of the line joining the fixed charges is zero.

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Explanation:

9.80665 N/kg is the force applied by Earth's gravity on a 1 kg of mass (that is then the weight of 1kg mass). the acceleration due to this gravity is usually correspondingly defined as 9.81m/s².

now we have 99 kg.

that means we have to multiply 9.81 by 99

99×9.81 = 971.19 N

if we just roughly round the weight of 1 kg from 9.81 to 10 N, we get then the proposed 99×10 = 990 N result.

but as you can see, this is not very precise.

In decreasing order, the ranking is as follows:

What is displacement?

Displacement can simply be defined as the difference in the position of the two objects and is independent of the path taken when traveling between the two objects.

Displacement is a vector quantity that has both a direction and magnitude.

The displacement of a hiker with a constant acceleration is equal to the average velocity during a time interval multiplied by the time interval.

The reason is because the time intervals are equal, the displacements are in the same order as decreasing average velocities. So therefore, the average velocity decreases in the order CD, DE, EF, and FG.

In conclusion, displacement depends on two positions which is the initial position and the final position.

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Answer:

t = 157.1428 s

t = 2.619 min

Explanation:

d = v/t

t = dv

t = (990km)(6.3km/s)

t = 157.1428 s

t = 2.619 min

Hope that helps

The wavelength of the infrared radiation is  λ = [tex]3.174[/tex]×[tex]10^{-5}[/tex]m.

An infrared telescope is tuned to detect infrared radiation with a frequency of 9.45 THz.

We know that,

1 THz = 10¹² Hz

So,

f = 9.45 × 10¹² Hz

We need to find the wavelength of the infrared radiation.

λ=c/f

λ = 3×[tex]10^{8}[/tex]/9.45×[tex]10^{12}[/tex]

λ = 3.174 ×[tex]10^{-5}[/tex] m

The term "infrared radiation" (IR) refers to a part of the electromagnetic radiation spectrum with wavelengths between about 700 nanometers (nm) and one millimeter (mm). Longer than visible light waves but shorter than radio waves are infrared waves.

Electromagnetic radiation with wavelengths longer than those of visible light is known as infrared, also known as infrared light. Since it is undetectable to the human eye, The typical range of wavelengths considered to be infrared (IR) is from about 1 millimeter to the nominal red edge of the visible spectrum, or about 700 nanometers.

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The acceleration of the car is 4.05 m / s², if it accelerates uniformly over a period of 5.21 seconds for 110 meters.

We know that,

a = v / t

v = d / t

where,

a = Acceleration

v = Velocity

t = Time

d = Distance

Given that,

t = 5.21 s

d = 110 m

v = 110 / 5.21

v = 21.11 m / s

a = 21.11 / 5.21

a = 4.05 m / s²

Acceleration is the rate of change of velocity of an object over it period of movement. It is denoted as a.

Therefore, the acceleration of the car is 4.05 m / s².

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The speed of the sound in standard notation is 1,470 m/s.

A standard notation is a form of writing a given number, an equation, or an expression in a form that follows certain rules.

The speed of the sound in water can be written in standard notation as follows;

1.47 X 10^3 m/s = 1,470 m/s

Thus, the speed of the sound in standard notation is 1,470 m/s.

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Answer:

See below

Explanation:

Ignoring air friction...X will be moving the same speed as Y

vf = at

  = 9.81 m/s^2 * 1 s = 9.81 m/s

The average velocity of an object which changes it's displacement by 3.50 meters in a time of 1.20 seconds is 2.92 m / s

v = Δx / t

v = Average velocity

Δx = Displacement

t = Time

Δx = 3.5 m

t = 1.2 s

v = 3.5 / 1.2

v = 2.92 m / s

Average velocity is the average value of velocity of an object in a given amount of time. It is denoted as v.

Therefore, the average velocity of an object which changes it's displacement by 3.50 meters in a time of 1.20 seconds is 2.92 m / s

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Erwin Schrödinger developed the equation that allowed the energy of the electron to be described quantum mechanically.

Erwin Schrödinger, an Austrian physicist, proposed that the behavior of electrons within atoms might be explained by considering them mathematically as matter waves, which was based on de Broglie's hypothesis that particles could display wavelike behavior.

The wave equation developed by Nobel Prize-winning Austrian physicist Erwin Schrödinger fundamentally altered the way quantum theory was thought about.

Schrodinger's famous Erwin Schrodinger equation, one of the pillars of quantum physics, was uncovered in 1926. He explained how a physical system's quantum state changes over time using differential equations.

The Schrödinger equation, which defines how the wave function, a quantity that characterizes a particle's wave characteristics, evolves, is the work of Erwin Schrödinger and is its most famous application.

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Answer:

c. an electron is the particle of an atom that is negatively charged

Explanation:

the other statements are not the best at defining an electron

According to tension force, the tension in the ropes is 760 N.

We need to know about tension force to solve this problem. According to second Newton's Law, the net force applied to an object will be proportional to mass and acceleration. Hence, it can be written as

∑F = m . a

where F is force, m is mass and a is acceleration

From the question above, we know that

m = 76 kg

g = 10 m/s²

a = 0m/s²

According to the question, the tension of the rope against the weight of the person. Hence, the tension in the ropes is

∑F = m . a

T - W = m . 0

T - m . g = 0

T = m . g

T = 76 . 10

T = 760 N

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Answer:

Explanation:

g

Answer: 0.87m

Explanation: 100 centimeters equal to 1 meter or one centimeter equal to one-hundredth

The total displacement of the ponies in the new pasture is 20m in the East direction.

The change in position of an object is measured by two physical quantities namely Distance and Displacement.

Distance is the total path traveled by the object. It is a scaler quantity. It can never be zero for a moving object. Also, its value can never be negative.

Displacement is the length of the shortest path connecting the initial and final position of the object. It is a vector quantity. Its value can be negative or zero for a moving object.

Given in the question, the pony moves 40m in the North direction and 40m in the South direction. These Directions are opposite to each other and cancel out each other. So the net displacement is only due to the movement of 20m in the East direction.

So Total Displacement = (40m North) - (40m South) + (20m East)

Total Displacement = 20m East

Hence, the total displacement of the ponies in the new pasture is 20m in the East direction.

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The half-life of carbon-14 to determine the age of an object that contains carbon B, C, A is the correct order of these steps.

Most industries in the world use carbon in some capacity. Coal, methane gas, and crude oil are all utilized as fuels (which is used to make gasoline). It is used to create a variety of products, including plastic and steel alloys (a combination of carbon and iron).

With the exception of a little amount that is present in the ocean, atmosphere, and living creatures, most of the carbon on Earth is trapped in rocks and sediments. These act as sinks or reservoirs for the carbon cycles.

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The electric potential is highest where there is more potential energy present for the same charge.

(The + charge is relocating with nature; relocating with the E field does not require work.) (A + charge is traveling from a high PE to a low PE state when it moves naturally in the direction of the E field. The potential is constant at the value it reaches at the surface because there is no electric field inside a conducting sphere: additional charge geometries that might be possible. The potential energy from this work will be stored in the test charge. However, you won't have to do any effort because the electric field inside the sphere is zero.

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A star is moving directly toward earth at a large fraction of the speed of light. The light we observe from this star compared to the light received from the same star if it were at rest relative to earth will be blueshifted.

The elements of Earth are land, air, water, and life. Mountains, valleys, and flat places can all be found on the ground. Different gases, namely nitrogen and oxygen, make up the air. Rain, snow, ice, rivers, lakes, oceans, and streams are all examples of water. Doppler shift is the term used in physics to describe this phenomena, which is the alteration in wave frequency caused by an observer moving in respect to the source.

But much like the other planets, Earth is a planet that exists in space and is a part of the cosmos. It so happens that life exists here and that the conditions close to this planet's surface are favourable for life as we know it. The tiny, delicate planet Earth stands out in the universe.

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At low temperatures, most molecules have speeds close to their average speed.

A plot of the maxwell distribution of speeds for the same sample of gas at different temperatures shows that: At low temperatures, most molecules have speeds close to their average speed.

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Answer:  condensation

Explanation:    

i hope it helped

A person walks 60 meters, and then he walks 130 meters. The total distance covered by man is 190 meters.

The distance of an object is its overall motion, regardless of direction. The amount of space that an object has traveled, regardless of where it started or ended, is referred to as distance.

Given that it only depends on the magnitude and not direction, distance is a scalar number. Only positive numbers are possible for distance.

According to the question,

The man walks 60 meters, then he walks again for 130 meters.

So, total distance covered by man :

Total distance= D1 + D2

=60+130

Total distance= 190 meters.

So the Distance covered by the man is 190 meters.

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You have found that tides on earth are determined primarily by the position of the moon, with the sun playing only a secondary role.  The moon plays a greater role in causing tides than the sun because it is close to the earth than the sun.

Earth orbits around the sun due to its gravitational force, however, the formation of tides in the ocean takes place due to the force of gravity exerted by the moon.

Both the sun and the moon exert a gravitational pull on the earth.

Due to the difference in their distance, the moon plays a crucial role and has a dramatic effect on the earth which leads to tide generation as it has a greater force of gravity on earth as compared to the sun.

When the moon is closer to earth, a strong and large number of tides are formed.

In other words, no doubt the sun is much greater in size and has a large gravitational force but due to the large distance from earth, it does not play a greater role in the formation of tidal waves.

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