The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 190 cm2 (area touching the ground), estimate the mass of the car. No units on answer.

According to the information, the rms speed of the gas will remain unchanged.

The rms (root-mean-square) speed of a gas is directly proportional to the square root of its temperature. In this scenario, the temperature is constant, which means that the rms speed of the gas will also remain constant.

The change in volume does not have a direct effect on the rms speed of the gas, as long as the temperature remains unchanged. Therefore, the rms speed of the gas in the vessel will not change.

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Answer:

Refraction

Explanation:

because the pencil looks magnified or distorted in water

Answer:

(B) Refraction

Explanation:

the fact or phenomenon of light being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

In physics, refraction is the redirection of a wave as it passes from one medium to another. The redirection can be caused by the wave's change in speed or by a change in the medium.

Hope this helps!! :) (Also there is an example attached :D)

Mark's work decreases when he climbs the same flight of stairs again in the same amount of time without the cello.

The correct answer is option D.

The amount of work Mark does depends on the weight of the cello, as well as the distance he climbs and the time it takes. Work is calculated using the formula :

Work = Force × Distance.
In the given scenario, Mark is carrying a full-sized cello while climbing the stairs. The weight of the cello adds to the force he exerts. So, the total force Mark exerts is the weight of the cello plus his own weight (375 N).

When Mark climbs the stairs with the cello, he is doing work against the force of gravity.

The work done is equal to the force exerted multiplied by the distance climbed (375 N + weight of cello) × 4 m.

Now, if Mark were to climb the same flight of stairs again in the same amount of time (3 seconds), but this time without the cello, the amount of work he does would decrease. This is because without the cello, the force exerted would only be Mark's weight (375 N), which is less than the total force exerted with the cello.

Therefore, mark's work decreases.

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Answer:

Option A (69.56 newtons) is the appropriate solution.

Explanation:

According to the question,

On the X-axis,

⇒ \(T_1Cos30^{\circ}-T_2Cos60^{\circ}=0\)

or,

    \(T_1Cos 30^{\circ}=T_2Cos60^{\circ}\)

On substituting the values, we get

      \(T_1\times \frac{\sqrt{3} }{2}=T_2\times \frac{1}{2}\)

      \(T_1\times \sqrt{3} =T_2\)....(equation 1)

On the Y-axis,

⇒ \(T_1Sin30^{\circ}+T_2Sin60^{\circ}=139.3 \ N\)

                        \(\frac{T_1}{2} +\frac{\sqrt{3} }{2} =139.2 \ N\)

                    \(T_1+\sqrt{3}T_2=139.2\times 2\)

From equation 1, we get

           \(T_1+\sqrt{3}\times \sqrt{3}T_1 =278.4 \ N\)

                        \(T_1+3T_1=278.4 \ N\)

                                \(4T_1=278.4 \ N\)

                                  \(T_1=\frac{278.4}{4}\)

                                       \(=69.6 \ N\)  

Answer:

69.58

Explanation:

Answer:

c

Explanation:

because whatever elements are used like gas uses water evaporation so yeah

Answer:

(A) Space between particles!

Explanation:

Solids can hold their shape because their molecules are tightly packed together!

In this case it will be equal to the flux of electric field through the Gaussian surface B as Flux through S(A) = Flux through S (B ) =  Charge inside/ ∈₀

Gauss's law states that the net total electric charge inside a Gaussian surface equals the total electric flux. The electric flux will remain constant even if the Gaussian surface is three times bigger if both surfaces have an equal amount of total electric charge.

Now that we have an arbitrary charge distribution, we can determine the electric flux through any closed surface. We discovered that any electric field lines entering the surface at one point must necessarily exit at another point of the surface if a closed surface lacks any charge inside where an electric field line can terminate. Therefore, the electric flux will not exist if a closed surface has no charges inside the enclosed volume.

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Answer:

Explanation:

The short answer is B.

Both answers are correct if you omit the concerns of the other group. The second group is primarily concerned about the effects of tidal power on the environment. They are worried about marine animals, fish, silt buildups.

Contrary to this, the first group see the need for power that is relatively clean.

That's what B points out.

Due to light refraction, any fish in the water can see a fisherman on the bank a little more clearly than one might anticipate. When the light hits the water's surface, it “bends” down by around 13 degrees, leaving the image. Thus option A is correct.

When it reaches the surface, light emanating from the fish refracts (changes direction). When viewed from above the water, a fish appears to be closer to the surface than it actually is.

Therefore, Fred the fisherman has been told that, because of refraction, a fish in water will appear.

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102 m

Explanation:

The time 0.6 sec is the time it took for the sound to travel from the bat to the moth and back. So it took 0.3 sec for the sound to reach the moth. From the definition of speed, the distance of the moth d to the bat is given by

v = d/t ---> d = vt = (340 m/s)(0.3 sec) = 102 m

Answer:

I think the answer is B, I am not for sure

Answer:

The results of the experiment indicated a shift consistent with zero, and certainly less than a twentieth of the shift expected if the Earth's velocity in orbit around the sun was the same as its velocity through the ether.

Explanation:

Answer:

14 m/s^2

Explanation:

We have to use the equation F=ma because the question is a Newton's second law question.

First, list known values

F (force) = 70 N

m (mass) = 5 kg

a (acceleration) = ? (we have to solve for this)

Second, plug in known values into equation.

F=ma

70=5a

Third, solve. To solve this all you have to do is divide both sides by 5

70/5=5/5a

Fourth, your answer will be 14 meters per second squared  (m/s^2)

I hope this answer helps and have a great day!

The potential energy of the football with mass 2.5 kg which is lifted up to the top of a cliff is 4410 Joules.

Potential energy is the stored energy which depends upon the relative position of the various parts of a system of objects. Potential energy is the product of mass of the object, acceleration due to gravity, and the height. The SI unit of potential energy is Joule (J).

PE = m × g × h

PE = Potential energy,

m = mass of the object,

g = acceleration due to gravity,

h = height

PE = 2.5 × 9.8 × 180

PE = 4410 Joules

Therefore, the potential energy of the football is 4410 Joules.

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Answer:

Measurement is the comparison of any physical quantity of an object to a standard unit which is pre-determined. The standard units such as length, time, mass etc are known as the Fundamental units of Measurement.

Explanation:

Any object that can be measured is known as a physical quantity. So, to measure the physical quantity, we require some standard units. A measurement consists of two parts - the numerical measurement and the standard unit which is pre-determined. For example, the length of a given table is 10cm, which implies that 10 is the numerical value and the standard unit of measurement is centimeter (cm).

Measurements can be both Fundamental and Derived. Examples of Fundamental quantities are Length, Time etc, while example of Derived quantity is speed which is derived from Length and Time.

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Answer:

Whenever one body exerts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that it exerts

Explanation:

Answer: According to Khan Academy "Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.

Explanation: This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself. We sometimes refer to this law loosely as action-reaction, where the force exerted is the action and the force experienced as a consequence is the reaction.

We can readily see Newton’s third law at work by taking a look at how people move about. Consider a swimmer pushing off from the side of a pool, as illustrated below.

A swimmer pushes on the wall with her feet, which causes the wall to push back on her feet due to Newton's third law."

Hope this helps ^_^ and have a great day

The statement is False that Catastrophes, significant life changes and sleep were the three examples provided in the video that lead to stress.

disastrous stress .Serious sickness in the child or a family member, natural disasters, and child maltreatment are a few instances of this level of stress. The child's risk is at its maximum at this level.

The alarm reaction stage, the resistance stage, and the weariness stage are the several phases of this illness. The "fight or flight" response and the body's earliest signs of acute stress are referred to as the alarm reaction stage.

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Answer:

V2 = 4.5 dm³

Explanation:

Dados los siguientes datos;

Volumen inicial = 3 dm³

Temperatura inicial = 20°C Temperatura final = 30°C

Para encontrar el nuevo volumen V2, usaríamos la ley de Charles.

Charles afirma que cuando la presión de un gas ideal se mantiene constante, el volumen del gas es directamente proporcional a la temperatura absoluta del gas.

Matemáticamente, Charles está dado por;

\( VT = K\)

\( \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\)

Dónde;

V1 y V2 representan los volúmenes inicial y final respectivamente.

T1 y T2 representan las temperaturas inicial y final, respectivamente.

Haciendo V2 como la fórmula del sujeto, tenemos;

\( V_{2}= \frac{V1}{T1} * T_{2}\)

\( V_{2}= \frac{3}{20} * 30 \)

\( V_{2}= 0.15 * 30 \)

V2 = 4.5 dm³

Answer:

60 km/hour.

Explanation:

We'll begin by calculating the total distance traveled by the car. This is illustrated below:

Total distance traveled = sum of distance between PQRST

Total distance = 10 + 5 + 10 + 5

Total distance = 30 km

Next, we shall convert 30 mins to hour. This can obtained as follow:

Recall:

60 mins = 1 hour

Therefore,

30 mins = 30/60 = 0.5 hour.

Finally, we shall determine the average speed of the car as follow:

Distance = 30 km

Time = 0.5 hour

Speed =?

Speed = distance /time

Speed = 30/0.5

Speed = 60 km/hour

Therefore, the speed of the car is 60 km/hour.

Answer:

beneath the surface of the Pacific Ocean comes from samples and video collected by an unmanned lander

On the second visit to the RMS Titanic wreck, James Cameron used advanced remotely operated vehicles. These ROVs were equipped with high-resolution cameras and lights that allowed him to document and explore the interior of the ship.

James Cameron used remotely operated vehicles equipped with cameras to explore and look inside the famous shipwreck, the RMS Titanic, during his second visit. Allowed him to capture detailed images and footage of the interior of the Titanic and its artifacts. This expedition took place, more than a decade after his first visit to the Titanic wreck site.

The images and footage captured during this expedition provided valuable insights into the Titanic's condition and helped contribute to our understanding of its tragic history.

Therefore, On the second visit to the RMS Titanic wreck, James Cameron used advanced remotely operated vehicles.

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Answer:

C) The spring constant of each half will be twice the spring constant of the original long spring since it will stretch only half as much under the same tension.

Explanation:

Hooke's law states that the force needed to extend or compress a spring by a distance is proportional to that distance. If is given as:

F = ke, where F is the force applied, k is spring constant and e is the extension.

If a force f is applied to a spring with a spring constant k and by a distance stretched (x) then:

k = F / x

For half the spring, if the same force F is applied, the stretch would be half (x/2), hence the spring constant C is:

C = F / (x/2)

C = 2 (F / x) = 2 * spring constant of original spring

Answer:

B

Explanation:

on edge

The illustration with a vector pointed right going through an opening in a boundary and turning into a transverse wave on the other side demonstrates the phenomenon of absorption, so, option B is correct.

Absorption, in wave motion, is the process by which a wave's energy is transferred to matter when the wave travels through it. The energy of an electromagnetic, acoustic, or other wave is related to the square of its amplitude, which is the maximum displacement or movement of a point on the wave.

The amplitude of a wave continuously diminishes as it travels through a substance. The medium is described as being transparent to a specific type of radiation if just a tiny portion of the energy is absorbed, whereas it is described as opaque if all the energy is lost.

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Answer:

When a heavy football player and a light one run into each other, does the lighter player really exert as much force on the heavy player s the heavy player exerts on the light one. Yes. The interaction between the two players, the force each exerts on the other have equal strength.

Explanation:

It has the greatest Potential energy when the ball reaches its highest point.The correct option is D

Potential energy is the energy that an object possesses due to its position or state, which can be converted into work or kinetic energy when acted upon by a force.

There are three types of Potential Energy such as :

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Answer:

1) PE=mgh

2)when the ball reaches its highest point

3)21,599,200 J

4) The object’s mass, gravity, and height determine its potential energy.

5)Members of a team work together to create a plan, and then members choose different tasks to carry out the plan.

Answer:

The starting velocity for ball 1 is 1.00 meter/second. Its ending velocity is 0.25 meter/second.

The change in velocity for ball 1 is 0.25 – 1.00 = -0.75 meter/seconds

Going down the first ramp:

• net force parallel to the ramp:

∑ F = W sin(60°) = m a₁

(W for weight)

• net force perpendicular to the ramp:

∑ F = N + W cos(60°) = 0

(N for normal force)

The body has mass 0.1 kg, and with g = 10 m/s², its weight is W = 1 N. So in the first equation, we get

(1 N) sin(60°) = (0.1 kg) a₁   →   a₁ ≈ 8.7 m/s²

Let d₁ be the distance the body moves down the ramp, i.e. the distance along the ramp between the starting point and the point O. Then

sin(60°) = h / d₁   →   d₁ = 2h/√(3) ≈ 1.15h

Given an initial speed v₁ = 3 m/s, we find the speed v₂ at point O to be

v₂² - (3 m/s)² = 2 (8.7 m/s²) d₁

v₂ ≈ √(9 m²/s² + (17.4 m/s²) (1.15h))

v₂ ≈ √(9 m²/s² + (20 m/s²) h)

Going up the second ramp:

• net parallel force:

∑ F = -Fr - W sin(30°) = m a₂

(Fr for friction)

• net perpendicular force:

∑ F = N - W cos(30°) = 0

sin(30°) = cos(60°), and cos(30°) = sin(60°), so the second equation gives N = 0.87 N. Then with µ = 0.1, we have Fr = µ N = 0.087 N. The first equation then gives

-0.087 N - 0.5 N = (0.1 kg) a₂   →   a₂ ≈ -5.9 m/s²

We now have

tan(30°) = h/R   →   h = (2.5 m)/√3 ≈ 1.4 m

(which, by the way, tells us that v₂ ≈ 6.2 m/s)

Then the distance traveled up the ramp is

d₂ = √(h² + R ²) ≈ 2.9 m

Use this to solve for the speed at the top of the ramp:

v₃² - v₂² = 2 (-5.9 m/s²) d₂

v₃ = √((6.2 m/s)² - (11.8 m/s²) (2.9 m)) ≈ 2.0 m/s

At the top of the second ramp:

• net parallel force:

∑ F = -Fsp - W sin(30°) = m a₂

(Fsp for spring)

• net perpendicular force:

∑ F = N - W cos(30°) = 0

By Hooke's law, Fsp = kx, so in the first equation we get

-k (0.10 m) - (1 N) cos(60°) = (0.1 kg) (-5.9 m/s²)

→   k ≈ 0.87 N/m

Carl Rogers, along with Abraham Maslowsignificantly contributed to the humanistic psychology movement through his development of the person-centered approach and his emphasis on the individual's subjective experience and potential for personal growth.

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Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is  

Explanation:

From the question we are told that

  The force exerted by student 1 is  \(\vec F_1 = F_0 \^ i\)

  The force exerted by  student 2 is \(\vec F_2 = - 3 F_o \^ j\)

  The force exerted by  student 3 is  \(\vec F_3 = -4F_o \^ i + G \^ j\)

  The displacement of the T-shirt is  \(\vec D = 2d\^ i + d\^ j\)

Generally  workdone is mathematically represented as

       \(W = \vec F * \vec d\)

Generally  workdone is  student 3 mathematically represented as

      \(W_3 = \vec F_3 * \vec D\)

=>  \(W_3 = -4F_o \^ i + G \^ j * [2 d \^ i + d\vec j ]\)

=>  \(W_3 = -8F_o d * Gd\)

Answer:

You got it right, didn't you?

c) vector C

Explanation:

opposite to vector V

Answer:

A, vector B

Explanation:

A negative vector is a vector which points in the opposite direction, even though it’s in a different quadranot it’s still the opposite direction.

Answer:

The answer is D) crystal structure.

Explanation: