What is the net force in this image?

Change in potential energy  is calculated as 66267.6 J

v₂, speed of the cart at B  is calculated to be 24 m/s

Quantitative property that is transferred to a body or to a physical system and is recognizable in the performance of work and in the form of heat and light is called a as energy.

As we know, KE1 + PE1 = KE2 + PE2  

Given m=230kg,h=39.1 m, h2= 9.7m  

we know g= 9.8m/s^2

As we know, KE1 + PE1 = KE2 + PE2  

0 + m*g*h₁ = .5(m)v₂² + m*g*h₂

(230)*(9.8)*(39.1)= 0.5(230)(v₂² )+ (230)(9.8)(9.7)

88131.4 = 115 v₂² + 21863.8

66267.6 = 115 v₂²

v₂²  = 576.24

v₂ = 24 m/s

We know, change in potential energy is PE2 - PE1

88131.4- 21863.8

Change in potential energy = 66267.6 J

To know more about energy, refer

https://brainly.com/question/13881533

#SPJ1

According to the Brewster's law The angle of incidence is θ=tan −1n.

What is Brewster's law?
Brewster's law is a relationship for light waves that states that if a light ray is allowed to fall on the surface of the a transparent medium in a way that refracted ray makes a 90° angle with the reflected ray, the maximum polarisation (vibration in one aircraft only) can be achieved. The law bears Sir David Brewster's name, a Scottish physicist who first suggested it in 1811. The illustration depicts a ray of regular (nonpolarized) light with a particular wavelength striking a transparent medium's reflecting surface (e.g., water or glass).

According to Brewster's law,

the angle of incidence at which the reflected light is totally polarized for reflection from air to glass is governed by the relation

n=tanθ

∴θ=tan −1n

Hence, the angle of incidence is θ=tan −1n.

To learn more about brewster's law the link is given below:
https://brainly.com/question/14206086
#SPJ4

The basic definition of a black hole is -

D) any object from which the escape velocity exceeds the speed of light.

What is a blackhole?

Stellar, intermediate, supermassive, and miniscule black holes are the four main categories. Stellar death is the process that creates black holes most often. Most dying stars will expand, lose mass, then cool to form white dwarfs as they approach the end of their lives. However, the biggest of these flaming bodies, those at least 10 to 20 times as massive as our sun, are doomed to become either super-dense neutron stars or so-called stellar-mass black holes.

Hence, option D is correct.

To learn more about black hole from the given link

https://brainly.com/question/468699

#SPJ4

Superior colliculi structure is controlling this movement To attending the indi 500 and as cars pass you by, your eyes and head follow the race cars.

In neuroanatomy, the advanced colliculus (from the Latin 'upper hill') is a shape mendacity at the roof of the mammalian midbrain. In non-mammalian vertebrates, the homologous shape is known as the optic tectum or optic lobe. The adjective shape tectal is typically used for each system.

In mammals, the superior colliculus forms a chief thing of the midbrain. it's far a paired structure and collectively the paired inferior colliculi form the corpora quadrigemina. The superior colliculus is a layered shape, with a pattern, this is just like all mammals. The layers can be grouped into the superficial layers (stratum opticum and above) and the deeper last layers. Neurons within the superficial layers acquire direct input from the retina and reply nearly solely to visible stimuli.

Many neurons in the deeper layers additionally respond to different modalities and some reply to stimuli in a couple of modalities. The deeper layers also incorporate a populace of motor-related neurons, capable of activating eye actions as well as other responses. In different vertebrates, the number of layers in the homologous optic tectum varies.

To learn more about Superior colliculi visit here:

brainly.in/question/20459404

#SPJ4

The difference between the string's tension and the cart's acceleration is that the tension doubles while the acceleration stays the same.

In common language, tension is the physical and emotional stress that comes along with life's events. Positive or bad situations can cause this stress, which can be physical, psychological, or emotional.

Compression force's opposite is tension. All of the things in the scene that are in contact with one another apply forces to one another. The best demonstration of a tension force is when a rope is being pulled. The rope builds up a lot of tension when a pulling force is applied to it.

To know more about tension visit:

https://brainly.com/question/15880959

#SPJ4

The flowing current at the given time is determined as 7.36 mA.

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

Also we can define electric current as the measure of the average rate of flow of electrical charges over a given period of time.

I = dQ/dt

where;

The given parameters include the following;

Q = (10 - 10[tex]e^{-2t}[/tex]), mC

t = 0.5 second

I = dQ/dt

I = d(10 - 10[tex]e^{-2t}[/tex])/dt

I = -2 x (-10[tex]e^{-2t}[/tex])

I = 20[tex]e^{-2t}[/tex]

The time, t is given as 0.5, now substitute this value into the above equation;

I = 20[tex]e^{-2 \times 0.5}[/tex]

I = 20[tex]e^{-1}[/tex]

I = 7.36 mA

Thus, the current at the given time is a function of charge and time of charge flow.

Learn more about electric current here: https://brainly.com/question/4128394

#SPJ1

The time at which the two boats get closest to each other is t=21.6 min

Time and work are concerned with how long it takes a person or a group of people to finish a task and how effectively each of them completes it.

Given that,

A boat leaves a dock at 2 : 00 pm and travels due south at a speed of 20 km/h.

And another boat has been heading due east at 15 km/h and reaches the same dock at 3 : 00 pm.

At 2:00 pm,

t=0

At 3:00 pm,

t=1

Distance=Speed*Time

D=15(1)

D=15km

Now, if the speed is 20km/hr

D=20(t)

D=20t

C²=(15-15t)²+(20t)²

(C²)'=2(15-15t)(-15)+2(20t)(20)

(C²)'=-450+1250t

(C²)'=0

Then,

-450+1250t=0

t=9/25 hr

(C²)'=-450+1250t=0

(C²)"=1250>0

Therefore,

t=9/25 hr

t=21.6 min

The time at which the two boats get closest to each other is t=21.6 min

To know more about time, visit:

https://brainly.com/question/7047867

#SPJ4

6.5 The lowest observed microwave absorption frequency.

To learn more about absorption from the given link :

https://brainly.com/question/24228588

#SPJ4

Answer:

Golf ball ([tex]0.1\; {\rm kg}[/tex]): approximately [tex](-19.506)\; {\rm m\cdot s^{-1}}[/tex] (backwards).

Steel ball ([tex]8\; {\rm kg}[/tex]): approximately [tex]0.49383\; {\rm m\cdot s^{-1}}[/tex] (forward.)

Explanation:

Apply unit conversion and ensure that the unit of all mass are in kilograms: [tex]100\; {\rm g} = 0.1\; {\rm kg}[/tex].

In an elastic collision, both momentum [tex]p = m\, v[/tex] and kinetic energy [tex]\text{KE} = (1/2)\, m\, v^{2}[/tex] are conserved. Momentum of the two balls before the collision are:

Hence, the total momentum of the two balls was [tex]2\; {\rm kg \cdot m\cdot s^{-1}}[/tex] before the collision and (by conservation) will still be [tex]2\; {\rm kg \cdot m\cdot s^{-1}}\![/tex] after the collision.

Kinetic energy of the two balls before the collision are:

Thus, the total kinetic energy of the two balls will be [tex]200\; {\rm kg \cdot m^{2} \cdot s^{-2}}[/tex] before and after the collision.

Let [tex]m_{a}[/tex] and [tex]v_{a}[/tex] denote the mass and velocity of the golf ball after collision; [tex]m_{a} = 0.1\; {\rm kg}[/tex].

Let [tex]m_{b}[/tex] and [tex]v_{b}[/tex] denote the mass and velocity of the steel ball after collision; [tex]m_{b} = 8\; {\rm kg}[/tex].

Total momentum after the collision shall be [tex]2\; {\rm kg \cdot m\cdot s^{-1}}\![/tex]. Thus:
[tex]m_{a}\, v_{a} + m_{b}\, v_{b} = 2\; {\rm kg \cdot m\cdot s^{-1}}[/tex].

Total kinetic energy after the collision shall be [tex]200\; {\rm kg \cdot m^{2} \cdot s^{-2}}[/tex]. Thus:
[tex]\displaystyle \frac{1}{2} \, m_{a}\, v_{a} + \frac{1}{2}m_{b}\, v_{b} = 200\; {\rm kg \cdot m^{2}\cdot s^{-2}}[/tex].

Assume that the unit of [tex]v_{a}[/tex] and [tex]v_{b}[/tex] are both "meters per second" ([tex]{\rm m\cdot s^{-1}}[/tex].) Combine and solve this system of two equations and two variables:

[tex]\left\lbrace\begin{aligned}&0.1\, v_{a} + 8\; v_{b} = 2 \\ &\frac{1}{2}\, {v_{a}}^{2} + 4\, {v_{b}}^{2} = 200\end{aligned}\right.[/tex].

Rewrite the first equation to obtain [tex]v_{a} = 20 - 80\, v_{b}[/tex]. Substitute this equation into the second one to eliminate [tex]v_{a}[/tex]:

[tex]\displaystyle \frac{1}{2}\, (20 - 80\, v_{b})^{2} + 4\, v_{b}^{2} = 200[/tex].

Solve this equation for [tex]v_{b}[/tex]:

[tex]324\, {v_{b}}^{2} - 160\, v_{b} = 0[/tex].

There are two solutions to this quadratic equation: [tex](40 / 81)[/tex] and [tex]0[/tex]. Note that the velocity of the steel ball must be non-zero right after the collision. Hence, [tex]v_{b} \ne 0[/tex]. Therefore, the only possible value for [tex]v_{b}[/tex] will be [tex](40 / 81)\![/tex], which is approximately [tex]0.49383\; {\rm m\cdot s^{-1}}[/tex].

Substitute [tex]v_{b} = (40 / 81)[/tex] back into the first equation of the system and solve for [tex]v_{a}[/tex]: [tex]v_{a} = 20 - 80\, v_{b} \approx (-19.506)\; {\rm m\cdot s^{-1}}[/tex]. Note that the velocity of the golf ball [tex]v_{a}\![/tex] is negative since the golf ball is travelling backwards, opposite to its initial direction of motion.

In other words, the velocity right after collision will be approximately [tex](-19.506)\; {\rm m\cdot s^{-1}}[/tex] (backwards) for the golf ball and approximately [tex]0.49383\; {\rm m\cdot s^{-1}}[/tex] (forwards) for the steel ball.

star formation is the process by which dense regions within molecular clouds in Interstellar space.

As we know stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the orion nebula.

A molecular cloud, sometimes called a stellar nursery if star formation is occurring within is a type of Interstellar whose density and size permits the formation of molecule .

The most common in hydrogen.

To know more about star forming region

https://brainly.com/question/978679

#SPJ4

False Relationship between energy  to wavelength is also inverse as wavelength to frequency. As wavelength gets shorter ,the energy will increases and vice versa.

Energy can also be linked to light, and there is a clear relationship between energy and wavelength. The energy decreases as the wavelength lengthens and vice versa. Visible light has a lower energy than, for example, X-rays or ultraviolet light and a higher energy than infrared radiation or radio waves. The wavelength has an inverse relationship with the amount of energy because the electromagnetic frequency of the photon is directly proportional to it. The frequency of a photon determines its energy. The energy of a photon decreases proportionally to its wavelength. Longer wavelengths and lower frequencies correspond to warmer colors. Shorter wavelengths and higher frequencies correspond to cooler colors. The Greek letter lambda λ, which represents wavelength, is frequently used.

Learn more about wavelength here:

https://brainly.com/question/13533093

#SPJ4

Compounds, like water (H2O) and methane, are made of two or more atoms of various elements. Atoms are not scaled in drawings. Compound molecules contain atoms from two or more distinct elements.

As an illustration, the molecule of water (H2O) contains three atoms: two hydrogen (H) atoms and one oxygen (O) atom. Rust is created when oxygen from the air reactor with iron, which is BLANK with one type of atom (iron oxide). Oxidation reactions result in iron rusting. When something rusts, iron reacts with oxygen in the air and produces Fe2O3.xH2O, or hydrated iron (III) oxide.

Learn more about reactor here-

https://brainly.com/question/13869748

#SPJ4

A height of 27.56 feet is the maximum the ball can fly.

Speed is the rate at which an object travels along a path over time, whereas velocity is the speed and direction of an item's motion. In other words, speed is a scalar value, but velocity is a vector.

The rate at which that moves in a certain direction is referred to as its velocity. as quickly as a car traveling north on a road or a rocket taking flight. The magnitude of the velocity vector's absolute value will always be equal to the motion's speed because it is a scalar.

To know more about Velocity visit:

https://brainly.com/question/18084516

#SPJ4

G = 9.81 m/s2 is the acceleration caused by gravity. The skydiver's acceleration, who is currently descending at a speed that is one-fifth of his ultimate terminal speed, is 3.5316.

Acceleration: the rate at which the speed and direction of a moving object vary over time. A object and item moving straight forward is propelled when it increases or depreciates.

Acceleration is a component of velocity profile. As a result, velocity must remain constant if accelerations are zero. That constant, however, might be anything, such as 5 m/s. Additionally, zero acceleration is indicated if the speed is zero .

To know more about Acceleration visit:

https://brainly.com/question/2303856

#SPJ4

Telescopes have to have a good motorized drive system to move them quickly and smoothly so that they can continue to point at the object being observed.

Astronomers use a telescope to observe distant things. Curved mirrors are used by the majority of telescopes, including all large telescopes, to collect and concentrate light from the night sky. The original telescopes employed lenses, which were curved pieces of clear glass, to focus light. The ability of an optical telescope to gather light is its most crucial ability. This capability is solely dependent on the telescope's aperture, or the diameter of the clear objective.

The telescope has a motorized drive mechanism that drives it smoothly from east to west at precisely the same rate that Earth is rotating from west to east in order to maintain the telescope's pointing at the object being seen because Earth is revolving.

To read more about telescopes, visit https://brainly.com/question/556195

#SPJ4

When the current in the wire is decreasing the oppose magnitude of the magnetic flux in the loops is Decreasing. Increasing support Induced currents in the loops and the forces exerted on them are directed so they Oppose this change.

The above statement was proved in Ampere's Circuital Law. According to the law the Current induced is directly proportional to the magnetic flux in the loops. So increasing the current would definitely oppose the change of decreasing the current.

Learn more about magnetic flux here:

https://brainly.com/question/24214683

#SPJ4

The total distance traveled by the in-line skater is 33.75 metres.

The total distance will be calculated by the sum of distance due to acceleration and distance due to constant speed. Converting the above mentioned formula in mathematical expression to be used:

d = (v+u/2)×t + v×t

Keep the values in formula to find the total distance.

d = (5+0/2)×4.5 + 5×4.5

Performing addition and multiplication on Right Hand Side of the equation

d = 2.5×4.5 + 22.5

Performing only multiplication on Right Hand Side of the equation

d = 11.25 + 22.5

Performing only addition on Right Hand Side of the equation

d = 33.75 metres

Thus, the skater traveled 33.75 metres.

Learn more about distance -

https://brainly.com/question/26046491

#SPJ4

The time taken for a car that can accelerate at a rate of 0.6 m / s² to go from a speed of 55 mi/h to a speed of 60 mi/h is 3.68 s

a = ( v - u ) / t

a = Acceleration

v = Final velocity

u = Initial velocity

t = Time

a = 0.6 m / s²

v = 60 mi / h = 26.8 m / s

u = 55 mi / h = 24.59 m / s

t = ( v - u ) / a

t = ( 26.8 - 24.59 ) / 0.6

t = 3.68 s

Acceleration is the rate of change of velocity with respect to time. If the final speed is greater than the  initial speed it is called as acceleration and if the final speed is lesser than the initial speed it is called as deceleration.

Therefore, the time taken for this car is 3.68 s

To know more about Acceleration

https://brainly.com/question/12550364

#SPJ4

The critical angle for the total internal reflection using snell's law is  

θ(c) = sin⁻¹(n₂/n₁).

Total internal reflection:

Full reflection of a light ray from the surrounding surface is back into a medium like glass or water. If the incidence angle exceeds a specific limitation angle known as the critical angle.

critical angle:

The critical angle is the angle of incidence for which the angle of reflection is 90 degrees. the incidence angle above which 100% internal reflection takes place is known as the critical angle.

Critical angle by using shell's law :

n₁ sinθ₁ = n₂sinθ₂

n₁ and n₂ are refractive index of the two material.

n₁ sinθ(c) = n₂sin(90°)

where,

θ(c) is the critical angle.

θ(c) = sin⁻¹(n₂/n₁)

The critical angle for the total internal reflection using snell's law is  

θ(c) = sin⁻¹(n₂/n₁).

To know more about reflection:

https://brainly.com/question/15487308

#SPJ4

Answer:

Claim: Element J should be placed in group 2A (group 2), the Alkaline earth metals. Element Q should be placed on group 8A, Nobel Gases.

Evidence: Element J is Solid at room temperature, is a good conductor of electricity, and have reactions. All of which are properties of Alkaine earth metals. Nobel gases are extremely unreactive, rarely forming compounds and the elements in this group are also gases at room temperature.

Reasoning: Based off of the evidence provided, its safe to say that Element J would belong in group 2A because of its indistindistinct similarities to elemts within that group. Element J would go with the Nobel gases for the same reason

Explanation:

ᓚᘏᗢ meow

The amount of Ra-226 left after4800 yrs with a half-life of 1600 yrs is  0.03125 g.

Half-life is the time taken for half the sample of a radioactive substance to disintegerate.

To calculate the amount of Ra-226 left, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the amount of Ra-226 left after 400 yrs is 0.03125 g.

Learn more about half-life here: https://brainly.com/question/1160651

#SPJ1

The correct answer is vertical layout will enable to adjust height of the views and the data visualizations.

What is a vertical layout?

Use the Vertical Layout control to hold content vertically within it (stacked on-top of one another). Keep in mind that this control can be linked to a list, creating a recurring segment. The Horizontal Layout and Vertical Layout are two of the most often utilised controls when creating a user interface.

So according to given data that if we do require to change the height of views as well as Data Visualization, we require to implement Vertical Layout.

To learn more about Vertical Layout from the given link

https://brainly.com/question/15874200

#SPJ4

20 N , in +x direction is the vector sum of these Toro forces.

To learn more about forces from the given link :

https://brainly.com/question/28021338

#SPJ4

Answer:

yes

Explanation:yes

Answer:

Yes

Explanation:

Earth is accelerated around the sun

The maximum distance the person will reach before he slip is 1.82m. Not even close to the middle of the ladder.

To learn more about distance from the given link :

https://brainly.com/question/15172156

#SPJ4

The frequency of the boat  at anchor outside a harbor is 0.208 Hz

What do you mean by SHM?

Simple Harmonic Motion or SHM is defined as the particular oscillation along a straight line between the two extreme points of locations (the path of SHM is a constraint).

Time period: The time period is defined as either the shortest amount of time required to complete one oscillation or the shortest amount of time after which the particle continues to repeat its motion.

Frequency: The frequency is explained as the number of oscillations happening per second.

Given in the question:

T = time period = 4.80 s

A = amplitude = 1.00 m

λ = wavelength = 40.5 m

T = 2π/ω

ω = 2π/T

   = 2 x 3.14 / 4.8

   = 1.308 rad/sec

ω = 2πf

f = ω/2π

 = 1.308/2 x 3.14

 = 0.208 Hertz

Hence, the frequency is 0.208 Hz

To learn more about SHM from the given link

https://brainly.com/question/20885248

#SPJ4

The gravitational force (Fg) for the first column is 1.96 x 10⁷ N.

The gravitational force (Fg) for the second column is 2.48 x 10⁷ N.

The gravitational force (Fg) for the third column is 3.24 x 10⁷ N.

The gravitational force (Fg) for the fourth column is 4.4 x 10⁷ N.

The gravitational force (Fg) for the fifth column is 6.36 x 10⁷ N.

The gravitational force (Fg) for the sixth column is 9.94 x 10⁷ N.

The gravitational force (Fg) for the seventh column is 1.77 x 10⁸ N.

Newton's law of universal gravitation states that every two objects in the universe attracts each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between the masses.

F = Gm₁m₂/r²

F = (Gm₁m₂) x 1/r²

where;

The gravitational force (Fg) for the first column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg = (6.626 x 10⁻¹¹ x 4 x 10⁹ x 6 x 10⁹) x  1/r²

Fg = 1.59 x 10⁹  x 0.0123

Fg = 1.96 x 10⁷ N

The gravitational force (Fg) for the second column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg =  1.59 x 10⁹  x 0.0156

Fg = 2.48 x 10⁷ N

The gravitational force (Fg) for the third column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg =  1.59 x 10⁹  x 0.0204

Fg = 3.24 x 10⁷ N

The gravitational force (Fg) for the fourth column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg =  1.59 x 10⁹  x 0.0277

Fg = 4.4 x 10⁷ N

The gravitational force (Fg) for the fifth column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg =  1.59 x 10⁹  x 0.0400

Fg = 6.36 x 10⁷ N

The gravitational force (Fg) for the sixth column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg =  1.59 x 10⁹  x 0.0625

Fg = 9.94 x 10⁷ N

The gravitational force (Fg) for the seventh column is calculated as;

Fg = (Gm₁m₂) x 1/r²

Fg =  1.59 x 10⁹  x 0.1111

Fg = 1.77 x 10⁸ N

Learn more about gravitational force here: https://brainly.com/question/27943482

#SPJ1

The action - reaction pair as to do with the force of the water and the lifting of the man.

We know that according to the Newton third law of motion, action and reaction are equal and opposite. This implies that when force is exerted on an object, the object would also be able to exert an equal but opposite force on the object.

Having said this, we know that when a force is exerted on the man by the water that is applied, the reaction is that the man would be lifted higher. This is thus the action and the reaction pair that is involved here.

Learn more about action and reaction:https://brainly.com/question/13959901

#SPJ1

The assumption that the system has no internal energy and that the force is applied uniformly is made to solve this problem.

To learn more about internal energy from the given link :

https://brainly.com/question/11278589

#SPJ4

Answer:

Explanation:

This sounds complicated but  ,  Butternight,  and maybe there is some difficulty in the ricochet.  I think the question is asking if the bullet bounces off a rock and heads North East....  or  NE,  but you've got it as  EN ?   Then how far does it go.  In my drawing,  what is X,  is the question.

We need to know how far the bullet travels East, and how far the bullet travels North.

Then we could put those two parts together and find the length of the red line in my drawing.  The red line is also referred to as the Magnitude.  

To find how far the bullet travels East,  use sine and cosine.  Do you know these?   if not,  start knowing  :D

Sine(36) = 0.587785....

Cosine(36)=0.809016....

640 * Sine(36)  => 640 * 0.587785  = 376.1825....  m  North

640 *Cosine(36)  => 640 * 0.809016 = 517.7708... m  East

Then the total distance traveled by the bullet to the East is 850 + 517.7708 = 1367.7708... m East

we can find the magnitude by using this [tex]\sqrt{North^{2} + East^{2} }[/tex]

[tex]\sqrt{376.1825^{2} + 1367.7708^{2} }[/tex] = 1418.559.... m NE

I used my calculator to find that.  :P