231 91 Pa has__neutrons

Answer:

The mass of the cement is 15,000 kg.

Explanation:

To evaluate the mass we can use this equation

\(\sf m=dv\)

Where

\(\sf m\) is the mass

\(\sf d\) is the density

\(\sf v\) is the volume

Numerical Evaluation

In this example we are given

\(\sf d=3000\)

\(\sf v=5\)

Substituting our given values into the equation yields

\(\sf m=3000 \cdot 5\)

\(\sf m=15000\) kg

Answer:

Explanation:

The constant acceleration of any object, neglecting air resistance and friction, is always -9.8. Proof:

\(s(t)=-4.9t^2+13\) which is the position of this feather before it is dropped. The first derivative of position is velocity, so the velocity function for the feather is:

\(v(t)=-9.8t\). We could find the velocity that the feather is experiencing at 3 seconds, but that is not what we are being asked. What we are being asked is the acceleration of the feather at 3 seconds. So we find the acceleration function of the feather:

a(t) = -9.8

It turns out that the time doesn't matter to acceleration due to gravity because feathers and elephants all fall under the same pull.

Answer:

Ideas for Prototype Design  

Similar to a cardboard oven just smaller and solar powered

Preliminary Sketches (attach separate paper, if needed)  

Option A:  i gave the picture

____________________________________________________________

Advantages: Disadvantages:  

● the tin foil will attract the sun● if theres enough heat for the food to warm up

●the plastic will keep bugs and/or animal away from getting it ● it might take longer  

●the box gives the food something to be in instead of the ground  

Option B: i think im going to stay with my original plan i can always make changes

__________________________________________________________

More advantages and disadvantges

Advantages: Disadvantages:  

●reducing my carbon footprint by alot ● heat varies so the food my take really really long

●using no energy other than the sun  

__________________________________________________________

Which of the three designs will you move forward with? Explain your reasons for selecting this design.

I will be moving forward with option A bc i personally can't think of another way or design and i think option A has more advantages than disadvantages  

__________________________________________________________

Building the Prototype  

What modifications, if any, did you make to the basic design during the construction process?

I used skewers to hold the flap up

__________________________________________________________

Predictions  

Will your device warm the hot dog to a temperature of 165°F? How will your device do this?

Well i guess it depends n alot of things such as where i will place my solar cooker and the weather changes i will most likely put my solar cooker on the black paper because darker colors absorb more heat then lighter ones, then i will wait maybe 10 -20 minutes and check on my hotdog

__________________________________________________________

Will your device efficiently warm the hot dog in 20 to 25 minutes? How will your device do this?  so my device will do this by attracting the suns rays and energy towards the box

__________________________________________________________

Will your device reach a temperature well above that of its surroundings? How will your device do this?

I think so especially if i put it in direct sunlight around a darker surface and of course the aluminium foil will help with this as well

__________________________________________________________

Observations  

Record your observations and the results of the experimental tests of your device below. Temperature of the surroundings (in °F): ______68_______  

Maximum temperature reached inside the solar cooker (in °F): _____59_____

__________________________________________________________

i added a picture but i will also put the numbers here althought keep in mind u might want to switch them up because its based off of my temperatures

Use this table to record the internal temperature of the hot dog every 2 minutes. Use a separate sheet of  paper, if necessary.

time:                           Temperature (°F)

4:00                            20

4:02                            20

4:04                            25

4:06                            26

4:08                            30

4:10                            34

4:12                            38

4:14                            40

4:16                            44

4:18                            46

4:20                           50

4:22                           55

4:24                           57

4:26                           60

4:28                           65

4:33                           72

4:35                           75

4:37                           76

4:39                           80

__________________________________________________________

Evaluating Your Prototype  

What worked well?

i would say definitely the black paper and tin foil sin they attracted most of the suns energy

__________________________________________________________

Which features can be improved upon?

i think maybe if i did t on a different day it would have gotten hotter

__________________________________________________________

How could the overall design of this device be improved?  

Position the flap more so that the hotdogs can get more sun

Doing it on a hotter day

Letting it cook longer

__________________________________________________________

Why would this change be an improvement? What concepts related to thermal energy transfer is this  improvement based on?  

this change would be an improvement by the hotdogs getting warmed to the right temperature this is related to thermal energy by the position of the flap i think if i angled it more in an abtuse angle the sun would have transferred to the foil to the bottom foil with the hotdogs

__________________________________________________________

Sketch of Your Final Design  

Draw a well-labeled sketch of the final design.

i provided a sketch it should be the last picture

OKAY FINALLY PLZ DONT REORT THIS I WORKED SO HARD ON IT LAST TIME AND IT GOT DELETED IF U HAVE ANY QUESTIONS ABOUT THE PROJECT I WILL TRY TO HELP YOU IN THE COMMENTS THANK YOUUUU - ( if your wndering what grade i got on this got a 100 percent )

OH AND PEACE.

Answer:

I am simply adding another answer so the one above can get a brainliest

Explanation:

I do not care about the points that I will wind up getting for this and they are right here just answer with gibberish

https://brainly.com/question/26856060

edit: in an attempt to return your points my question was taken down ill will return these

somehow

someway

sometime

The answer to the first part of the question is 24 V and the answer to the second part of the question is 48 V.

The formula which relates Charge, Capacitance and Voltage is

Charge = Capacitance × Voltage

Q = CV

where Q denotes the charge, C denotes the capacitance and V denote the voltage.

Using the above formula the charge on the capacitance will be

Q = CV

C = 10 mF

V = 24 V

Q = 240 mC

Charge on capacitance is 240 mC.

Now after we disconnect the battery

C = 10 mF (will remain same)

Q = 240 mC

V = Q/C

V = 240/10 V

V = 24 V

So after we removed the battery, The voltage will remain same.

Now we know that parallel plate capacitor formula is

C = ε(A/d)

from here

C ∝ 1/d, and as there is no loss of charge we can say that V ∝ 1/d

Form C ∝ 1/d and V ∝ 1/C we can state that

V ∝ d   {where d is the measurement of separation between the plates}

so if we double the distance between the plates then, the voltage will also get double.

Previously our voltage was 24 V, now if we double the distance between the plates the voltage will also get double, and it will become 48 V.

So, the voltmeter will take a reading of 24 V if voltmeter is connected across the two plates without discharging them, and if we double the plate separation then it will take 48 V as reading.

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Answer:

Gravitational force

Explanation:

Hope this helps :)

Answer:

a. True

Explanation:

Pollution can be defined as the physical degradation or contamination of the environment through an emission of harmful, poisonous and toxic chemical substances.

Aside from toxic pollution, the other types of pollution includes the following;

I. Sediment pollution.

II. Nutrient pollution.

III. Bacterial pollution.

Furthermore, particulate pollution is a form of pollution that is responsible for the degradation of the environment.

Particulate matter is also referred to as particle pollution or atmospheric aerosol particles and it can be defined as a complex microscopic mixture of liquid droplets and solid particles that are suspended in air. Other forms of particle pollution includes space debris and marine debris.

Some examples of particulate pollution are dusts, soot, dirt, smoke, etc.

Answer:a

Explanation:

The radii of the first five Fresnel zones is 3.6 mm.

Distance from the light source to the wave surface, d₁ = 1 m

Distance from the wave surface to the observation point, d₂ = 1 m.

Wavelength of the light used, λ = 5 x 10⁻⁶m = 5 μm

The expression for the radius of the Fresnel zones is given by,

rₙ = √[nλd₁d₂/(d₁ + d₂)]

Therefore, the radii of the first five Fresnel zones is,

r₅ = √[5 x 5 x 10⁻⁶x 1 x 1/(1 + 1)]

r₅ = √(25 x 10⁻⁶/2)

r₅ = 3.6 x 10⁻³m

r₅ = 3.6 mm

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To calculate the refractive index of the liquid, we can use the formula for the radius of the nth bright ring in Newton's rings: \(r_n\) = √(n × λ × R). Therefore, the refractive index of the liquid is approximately 1.378.

\(r_n\) =  √(n × λ × R) (formula )

Where: \(r_n\) is the radius of the nth bright ring,

n is the order of the ring,

λ is the wavelength of light,

and R is the radius of curvature of the lens.

the third bright ring (r_3 = 3.65 mm = 0.365 cm), the radius of curvature of the lens (R = 10 m = 1000 cm), and the wavelength of light (λ = 0.0000589 cm).

n = \(r_n\) / √(n × λ × R)

Substituting the given values:

n = 0.365 / √(3 × 0.0000589 × 1000)

Calculating the value:

n ≈ 1.378 ( refractive index)

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The correct statement is Molecular collisions transfer thermal energy between the system and its surroundings. Thus, option D is correct.

The energy moves between a system of reacting substances and the surroundings by the collision of molecules. The transfer of heat or thermal energy between the system and its surroundings by the process of Conduction. Conduction is the process of transmitting the heat to the neighboring atoms or collisions by the process of collisions.

The conduction takes place more steadily in solids and liquids where the molecules are closer together. When the molecules are collided with the nearby molecules, the potential energy is converted into kinetic energy and hence the heat energy is transferred between the system and its surroundings.

Hence, Molecular collisions transfer thermal energy between the system and its surroundings. Thus, the correct option is D.

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Answer:

0.5 amps

Explanation:

the amps will be constant no matter what

Answer:

50 kg

Explanation:

fnet=ma

600-200=m8

divide both side by 8 to make m the subject of the formula Thus m=50kg

Answer:

a. Glass is denser than wood.

Explanation:

Density=Mass/volume

In this case we know that mass of glass is greater than wood. And the volume of both glass and wood are the same, so we will ignore that factor. Since mass is directly proportional to density, if your mass increase, your density increases as well, in this case.

The density of the liquid as measured by the student is 1.9473 g/ml

Definition of density: A material's density is determined by how closely it is packed. As the mass per unit volume, it has that definition. Symbol for Density: D or Density

Given Data

Mass = 2.22g ± 0.05g

Volume = 1.14 ± 0.04 ml

We know that the expression for density is given as

Density = Mass/Volume

Substituting our given data into the expression above, we have

Density = 2.22/1.14

Density = 1.9473 g/ml

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Answer:

3.33s

Explanation:

Given parameters:

Acceleration  = 15m/s²

Initial velocity  = 0m/s

Final velocity  = 50m/s

Unknown:

Time taken for the acceleration  = ?

Solution:

To solve this problem, we must understand that acceleration is the rate of change of velocity with time.

Mathematically;

           a  = \(\frac{v - u}{t}\)  

a is the acceleration

v is the final velocity

u is the initial velocity

t is the time taken

     So;

          15  = \(\frac{50 - 0}{t}\)  

           15t  = 50

              t  = 3.33s

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Answer: A

Explanation: Your body gets pulled down, causing ur body to have more weight but not mass.

Answer:

ΔV = 78 V

Explanation:

The potential at a point due to a point charge is given as:

\(V = \frac{kq}{r}\)

where,

V = Potential at the point

k = Colomb's Constant = 9 x 10⁹ Nm²/C²

q = charge = 3.25 x 10⁻⁹ C

r = distance

AT POINT A:

\(V_A = \frac{(9\ x\ 10^9\ Nm^2/C^2)(3.25\ x\ 10^{-9}\ C)}{0.15\ m} \\\\V_A = 195\ V\)

AT POINT B:

\(V_B = \frac{(9\ x\ 10^9\ Nm^2/C^2)(3.25\ x\ 10^{-9}\ C)}{0.25\ m} \\\\V_B = 117\ V\)

Now, the potential difference will be:

\(\Delta V = V_A-V_B = 195\ V - 117\ V\)

ΔV = 78 V

Answer:

121.7

Explanation:

credit to the comment above^

Answer:

The angle that the ramp makes with the ground extending from the ramp to the truck is approximately 17.5 degrees.

Explanation:

We can start by drawing a right triangle where the hypotenuse is the ramp, the height is 4 feet, and the base is the distance from the truck to the bottom of the ramp (the horizontal distance).

Since we know the length of the hypotenuse and the height of the triangle, we can use the sine function to find the measure of the angle:

sin(θ) = opposite/hypotenuse

sin(θ) = 4/13

Now, we can solve for θ by taking the inverse sine (sin^-1) of both sides:

θ = sin^-1(4/13)

Using a calculator, we get:

θ ≈ 17.5 degrees

All of the following are internal factors that may negatively affect an individual with dementia EXCEPT A. frustration.

Dementia is a medical condition capable of altering individual skills to remember and also to reason during decision-making, which is due to irreversible degeneration of neuronal cells in the brain that lead to a complete state or a false sense of reality in the individual according to the surrounding environmental conditions.

Dementia medical conditions are often associated with aging because they may lead to different degenerative neuronal problems, which must be treated in a proper clinical setting since the person is unable to live in normal conditions on his or her own.

Therefore, with this data, we can see that dementia medical condition that must be treated in clinical medical settings and it is associated with an irreversible loss of neuronal networks in the brain.

Complete question:

All of the following are internal factors that may negatively affect an individual with dementia EXCEPT:

Frustation

Fear and confusion

False beliefs

Fatigue

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The frictional torque of the spinning body is determined as  ( I × 2.1 ) N/m.

Friction torque is the force between two objects that causes one of them to rotate around an axis.

Also, friction torque is the torque caused by the frictional force that occurs when two objects in contact move.

The frictional torque is calculated by applying the following equation as shown below.

τ = Iα

where;

The angular acceleration of the body is calculated by applying the following equation as shown below.

α = Δω / Δt

α = ( ωf - ωi ) / ( t₂ - t₁)

where;

α = ( ωf - ωi ) / ( t₂ - t₁)

ωf = 100 rev/min x 2π rad/rev x 1 min / 60s = 10.5 rad/s

α = ( 10.5 - 0 ) / ( 5 - 0 )

α = 2.1 rad/s²

The frictional torque is calculated as follows;

τ = Iα

τ = ( I × 2.1 ) N/m

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Answer:

No

Explanation:

I read a lesson about this yesterday, the president has to be naturally born in the US and has to live there for some years (30 I think?)

Answer:

The U.S. Constitution requires that a candidate for president or vice president must have been born in the United States or otherwise a “natural born citizen.” Controversies have arisen in U.S. history from time to time as to who is “natural born” and therefore eligible to be president. Furthermore, with so many foreign-born citizens living in the United States, many people believe this constitutional requirement itself should be changed.

Explanation:

Answer:

10 N to the left.

Explanation:

Since the forces are acting in opposite directions, you need to calculate the difference.

20 N - 10 N = 10 N

More force is being exerted to the left. Therefore, the net force is 10 N to the left.

Given data:

* The mass of the Moon is 0.0123 times of mass of Earth as,

where M_E is the mass of Earth,

* The radius of the Moon is 0.272 times the mass of Earth as,

where R_E is the radius of Earth,

Solution:

The escape velocity of the object from the surface of the Moon is,

where G is the gravitational constant, M' is the mass of Moon, and R' is the radius of Moon,

Substituting the known values,

Thus, the escape velocity on the Moon is 2.37 Kilometers per second.

Given that the final velocity of the bullet is

The initial velocity of the bullet is

The distance traveled by the bullet is x = 0.8 m

We have to find the acceleration.

Let the acceleration be denoted by a.

The equation which can be used to calculate acceleration is

Substituting the values, acceleration will be

Thus the acceleration will be 225000 m/s^2.

Answer:

2 Pascal (Pa)

Explanation:

Pressure is defined as the force acting per unit area. Mathematically, it is expressed as:

Pressure (P) = Force (F) / Area (A)

Given:

Force exerted by the air inside the balloon (F) = 1 N

Area of the balloon (A) = 0.5 m^2

Plugging in the given values into the formula for pressure, we get:

P = F / A

P = 1 N / 0.5 m^2

Using basic arithmetic, we can calculate the pressure inside the balloon:

P = 2 N/m^2

So, the pressure inside the balloon is 2 N/m^2, which is also commonly referred to as 2 Pascal (Pa) since 1 Pascal is equal to 1 N/m^2.

Complete Question

Complete Question is attached below

Answer:

\(q=1.558*10^{-9}c\)

Explanation:

From the question we are told that:

Side length s=1.13m

Left field strength \(E_l=784.75N/m\)

Right field strength \(E_r=776.38 N/m\)

Front field strength \(E_f=725.5 N/m\)

Back field strength \(E_b=749.54 N/m\)

Top field strength \(E_t=944.95 N/m\)

Bottom field strength \(E_{bo}=1082.58 N/m\)

Generally, the equation for  Charge flux is mathematically given by

\(\phi=EAcos\theta\)

Where

Theta for Right,Left,Front and Back are at an angle 90

\(cos 90=0\)

Therefore

\(\phi =0\) with respect to Right,Left,Front and Back

Generally, the equation for  Charge Flux is mathematically also given by

\(\phi=\frac{q}{e_o}\)

Where

\(Area =L*B\\\\A=1.13*1.13\\\\A=1.2769m^2\)

Therefore

\(Q_{net}=E_{bo}Acos\theta_{bo} +E_tAcos\theta_t\)

\(Q_{net}=1082.85*1.2769*cos0=944.95*1.2769cos (180)\)

\(Q_{net}=176N/C m^2\)

Giving

\(q=\phi*e_0\)

\(q=176N/C m^2*1.558*10^{-12}c\)

\(q=1.558*10^{-9}c\)

See the attached figure.

The black arrows represent the two given vectors. The dashed black arrows are these same vectors, but translated so that the end of one vector is aligned with the start of another.

The red vector is their sum.

In case you also need to find the magnitude and direction of the sum, we have

A = (120 N) (cos(30°) i + sin(30°) j) = (60√3 i + 60 j) N

B = (-100 N) (cos(90°) i + sin(90°) j) = (-100 j) N

⇒   A + B = (60√3 i - 40 j) N

⇒   ||A + B|| = √((60√3)² + (-40)²) N = 20√31 N

and its direction relative to the positive horizontal axis (rightward) is θ such that

tan(θ) = (-40) / (60√3) = -2/(3√3)

⇒   θ = arctan(-2/(3√3)) ≈ -21.05°

Explanation:

F1 will have to have  65 N vertical up force to balance the net 65 N down on the body  AND it will have to have  70 N horizontal to the right to balance the 70 N force that is acting to the left

Magnitude = sqrt ( 65^2 + 70^2) = 95.5  N