PLEASE ANSWER ASAP BEFORE MY TEACHER AND MY MOM KILLES ME PLEASE ASAP

The first person with the right answer gets to be a brainlest

In the attachment there is a density column where there is colour

Question: tell me why is the red at the bottom of the density column if it is the least dense

Answer:

Here:

Explanation:

These eight phases are, in order, new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter and waning crescent. The cycle repeats once a month (every 29.5 days).

Answer:

The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects

Explanation:

Answer:

θ = 47.75º East of North.

Explanation:

       [tex]p_{Northo} = p_{Northf} (1)[/tex]

       [tex]p_{Northo} = m_{1} * v_{1o} (2)[/tex]

      where m₁ = 1570 kg, v₁₀ = 156 km/h

       [tex]v_{1o} = 156 km/h *\frac{1000m}{1 km}*\frac{1h}{3600s} = 43.3 m/s (3)[/tex]

       [tex]p_{Northo} = m_{1} * v_{1o} = 1570 kg* 43.3 m/s = 67981 kg*m/s (4)[/tex]

       [tex]p_{Northf} = (m_{1} + m_{2})* v_{fNorth} = 3815.1 kg* v_{fNorth} (5)[/tex]

       [tex]V_{fNorth} = \frac{67981kg*m/s}{3815.1kg} = 17.8 m/s (6)[/tex]

       [tex]p_{Easto} = p_{Eastf} (7)[/tex]

       [tex]p_{Easto} = m_{2} * v_{2o} (8)[/tex]

       [tex]v_{2o} = 120 km/h *\frac{1000m}{1 km}*\frac{1h}{3600s} = 33.3 m/s (9)[/tex]

       [tex]p_{Easto} = m_{2} * v_{2o} = 2245.1 kg* 33.3 m/s = 74762 kg*m/s (10)[/tex]

       [tex]p_{Eastf} = (m_{1} + m_{2})* v_{fEast} = 3815.1 kg* v_{fEast} (11)[/tex]

       [tex]V_{fEast} = \frac{74762 kg*m/s}{3815.1kg} = 19.6 m/s (12)[/tex]

       [tex]tg \theta = \frac{V_{fEast}}{V_{fNorth} } = \frac{19.6}{17.8} = 1.1 (13)[/tex]

        θ = tg⁻¹ (1.1) = 47.75º E of N.

Answer:

2/9 times as strong.

Explanation:

From the question given above, the following assumptions were made:

Initial mass of 1st planet (M₁ ) = M

Initial mass of 2nd planet (m₁ ) = m

Initial distance apart (r₁) = r

Initial Force of attraction (F₁) = F

Final mass of 1st planet (M₂) = 2M

Final mass of 1st planet (m₂) = constant = m

Final distance apart (r₂) = 3r

Final force of attraction (F₂) =?

Next, we shall obtain an expression to determine the new force. This can be obtained as follow:

F = GMm / r²

Cross multiply

Fr² = GMm

Divide both side by Mn

G = Fr² / Mm

Since G is constant, then we have

F₁r₁² / M₁m₁ = F₂r₂² / M₂m₂

Finally, we shall determine the new force as follow:

Initial mass of 1st planet (M₁ ) = M

Initial mass of 2nd planet (m₁ ) = m

Initial distance apart (r₁) = r

Initial Force of attraction (F₁) = F

Final mass of 1st planet (M₂) = 2M

Final mass of 1st planet (m₂) = constant = m

Final distance apart (r₂) = 3r

Final force of attraction (F₂) =?

F₁r₁² / M₁m₁ = F₂r₂² / M₂m₂

Fr² / Mm = F₂ × (3r)² / 2M × m

Fr² / Mm = F₂ × 9r² / 2Mm

Cross multiply

Fr² × 2Mm = F₂ × 9r² × Mm

Divide both side by 9r² × Mm

F₂ = Fr² × 2Mm / 9r² × Mm

F₂ = F × 2 / 9

F₂ = 2/9 F

Thus, the new force is 2/9 times the original force i.e 2/9 times as strong.

Answer: 370 days.

Explanation:

It will take the planet 16.69 minutes to complete one full orbit.

Data Given;

Applying gravitational and centripetal force

[tex]F = \frac{Gm_1m_2}{r^2}\\ F = \frac{mv^2}{r}\\ \frac{mv^2}{r}=\frac{Gm_1M2}{r^2}\\ v = \frac{2\pi r}{T} \\ \frac{m(2\pi r/T)^2}{r} = \frac{GM_1M_2}{r^2}\\ \frac{4\pi ^2r^2}{T^2} = \frac{GM}{r} \\ T^2 = \frac{4\pi^2 r^3}{Gm}\\ [/tex]

Let's substitute the values into the equation

[tex]T^2 = \frac{4\pi ^2 * (150*10^6)^3}{6.67*10^-11 * 1.99 *10^30}\\ T^2 = 1002799.605 \\ T = 1001.398s\\ T = \frac{1001.398}{60} = 16.69min [/tex]

It will take the planet 16.69 minutes to complete one full orbit.

Learn more on planetary rotation here;

https://brainly.com/question/21222010

Answer:

I. don't. get. this. question

C. Demand increases

Pace increases

Answer:

8.7975 Joules

Explanation:

Step one:

Given data

mass m= 0.5kg

height h= 1.5m

velocity v= 2.4m/s

The potential energy PE= mgh

The kinetic energy KE= 1/2mv^2

Step two

PE=0.5*9.81*1.5

PE=7.3575 Joules

KE= 1/2*0.5*2.4^2

KE=0.5*0.5*5.76

KE=1.44 Joules

The total mechanical energy is

PE+KE

=7.3575+1.44

=8.7975 Joules

By Newton's second law, the net vertical force acting on the object is 0, so that

n - w = 0

where n = magnitude of the normal force of the surface pushing up on the object, and w = weight of the object. Hence n = w = mg = 196 N, where m = 20 kg and g = 9.80 m/s².

The force of static friction exerts up to 80 N on the object, since that's the minimum required force needed to get it moving, which means the coefficient of static friction µ is such that

80 N = µ (196 N)   →   µ = (80 N)/(196 N) ≈ 0.408

Moving at constant speed, there is a kinetic friction force of 40 N opposing the object's motion, so that the coefficient of kinetic friction ν is

40 N = ν (196 N)   →   ν = (40 N)/(196 N) ≈ 0.204

And so the closest answer is C.

(Note: µ and ν are the Greek letters mu and nu)

Answer:

The time taken by the projectile to hit the ground is 6.85 sec.

Explanation:

Given that,

Vertical height of cliff = 230 m

Distance = 300 m

Suppose, determine the time taken by the projectile to hit the ground.

We need to calculate the time

Using second equation of motion

[tex]s=ut+\dfrac{1}{2}gt^2[/tex]

Where, s = vertical height of cliff

u = initial vertical velocity

g = acceleration due to gravity

Put the value in the equation

[tex]230=0+\dfrac{1}{2}\times9.8\times t^2[/tex]

[tex]t=\sqrt{\dfrac{230\times2}{9.8}}[/tex]

[tex]t=6.85 sec[/tex]

Hence, The time taken by the projectile to hit the ground is 6.85 sec.

Answer:

the answer is false... ....

Answer:

False

Explanation:

A species that has died our ans has no individual's left would be considered extict.

Answer:

The answer is "1160 ft".

Explanation:

Using the Pythagoras theorem:

[tex]\to a= 280 \times 3= 840\\\\\to b= 400 \times 2= 800\\\\[/tex]

[tex]\bold{\to y^2= a^2+b^2}\\\\[/tex]

         [tex]=840^2 +800^2\\\\= 705600+640000\\\\=1345600\\\\=1160 \ ft\\[/tex]

  [tex]\to y=1160 \ ft[/tex]

Answer:

The SI unit of thermal conductivity is watts per meter-kelvin (W/(m⋅K)).

Explanation:

hope this will help u

Answer:

Where does the water that forms rain come from? How about fog? Where does that come from? Have you ever been asked these questions by people, especially those kids who keep asking, 'Why?' Has someone ever told you that the water falling as snow has always been here, or that the water we use was once dinosaur blood, or that we are drinking someone's sweat, or, worse yet, drinking someone else's… gulp? How can this be possibl…

Explanation:

Answer:

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Explanation:

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Answer:

So, the evaporating pressure of the R410A = 118 psig

Explanation:

Solution:

For R410A system:

Data Given:

Evaporator Outlet Temperature = 50°F

Evaporator Superheat = 10°F

Required:

Evaporating Pressure in the system = ?

For this, first of all, we need to calculate inlet temperature on R410A system from the given value of outlet temperature.

Evaporator inlet temperature is the difference of outlet temperature and evaporator superheat.

Evaporator inlet temperature = Outlet Temperature - Evaporator Superheat

Evaporator inlet Temperature = 50°F - 10°F

Evaporator inlet Temperature = 40°F

Now, as we have the inlet temperature and the R410A system. We can consult the pressure temperature chart or PT chart, which I have attached and highlighted the value of evaporating pressure for 40°F inlet temperature.

So, the evaporating pressure of the R410A = 118 psig

Answer:

The electronic configuration of Fe2+ is 1s2 2s2 2p6 3s2 3p6 3d6 and Fe3+ is 1s2 2s2 2p6 3s2 3p6 3d5. Fe2+ contains 2 fewer electrons compared to the electronic configuration of Fe.

Answer:

15.625 watts

Explanation:

Recall that power is defined as the worked performed per unit of time:

Power = Work / time

The work done is Force * distance, so in our case the work is:

Work = 25 M * 5 m = 125 J

Then the power will be:

Power = 125 J / 8 sec = 15.625 watts

Answer:

218m

Explanation:

Given parameters:

Initial velocity  = 3.3m/s

acceleration  = 3.7m/s²

time   = 10s

Unknown:

How far will it travel during the time of acceleration  = ?

Solution:

We use of the kinematics equations to solve this problem;

          S  = ut  +  [tex]\frac{1}{2}[/tex] at²  

S is the distance

u is the initial velocity

t is the time

a is the acceleration

   So;

            S  = (3.3x10)   +   ([tex]\frac{1}{2}[/tex]  x 3.7 x 10²)  = 218m

Answer:

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Explanation:

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Answer:

this is the answer......

Answer:

x(max) = 20 m

Explanation:

In projectile shoot e have:

V₀y  = V₀*sin θ

V₀ₓ = V₀*cos θ

V₀  initial speed

θ  shotting angle

Vₓ = V₀ₓ = V₀*cos θ     during the trajectory

Vy  = V₀y  - g*t

And when  Vy = 0   h is maximun and the time to reach y maximum is half of the overall time.

According to that

Vy  =  0     V₀y = g*t       t  =  V₀y/g

t = 14* sinθ / 9,8

t = 1,43 *sinθ  s

And    overall time is T = 2* 1,43*sinθ

t = 2,86*sinθ

x = V₀ₓ * t   s

x = 14*cosθ * 2,86* sinθ

x = 40 * cosθ * sinθ

Lets take two very well know sin   cos pairs

for ∡ 30       ∡ 45     ∡60

and 30 and 60 are complementary angles for boths

cosθ * sinθ  is the same  ( 1/2)*(√3/2)

cosθ * sinθ  =  0,433     and

x = 40* 0,433

x = 17,32 m

For ∡ 45    boths   sin45    and  cos45   are equal  √2/2

In this case

x  =  40*(√2/2)*(√2/2)

x  =  40* 2/4

x = 20 m

And that is the maximum range

x(max) = 20 m

Answer:

1. Absorption or Emission of the light

2. Light induced changes in the matter  

Explanation:

When an electromagnetic wave such as light interacts with solid, two consequences are for sure:

1. Absorption or Emission of the light

2. Light induced changes in the matter

When light travels through the solid, the intensity of light decreases as a result of addition of light energy to the body to which it interacts. If the medium or body to which light interacts is low in absorbing due to its atomic structure inside then light passing through it will show it. On the contrary, if a material is high in absorbing, very less intensive light will travel out.

Moreover, there will ionization of the atoms inside the medium to which light interacts. As light carries energy and when it interacts with atoms of the body, atoms gets energy and excited or de-excited accordingly.

Hence, above are the two primary consequences of this interaction.

Answer:

Explanation:

Mass of proton :

[tex]m_P=1.67\times 10^-^2^7\:kg\\[/tex]

Speed of Proton:

[tex]v_P=4.85\times 10^6[/tex]

Linear Momentum of a particle having mass (m) and velocity (v) :

[tex]-> p =m->v\:\:\: (1)[/tex]

Magnitude of momentum :

[tex]p=mv\:\:\: (2)[/tex]

Frome equation (2), magnitude of linear momentum of the proton :

[tex]p_P=m_P\:v_P\\\\p_P=1.67\times 10^-^2^7 \:kg\times4.85\times 10^6\:ms^-^1\\\\p_P= 8.0995\times 10^-^2^1\:kgms^-^1[/tex]

Answer:

C. 167 kJ

Explanation:

The minimum amount of heat require to complete turn the ice into liquid water is equal to the latent heat of the ice, that is, the amount of heat needed by the ice to turn into water. This amount is calculated by:

[tex]Q = m\cdot h_{f}[/tex] (1)

Where:

[tex]m[/tex] - Mass of ice, measured in kilograms.

[tex]h_{f}[/tex] - Latent heat of fusion, measured in kilojoules per kilogram.

[tex]Q[/tex] - Latent heat, measured in kilojoules.

If we know that [tex]m = 0.500\,kg[/tex] and [tex]h_{f} = 333\,\frac{kJ}{kg}[/tex], the latent heat of ice is:

[tex]Q = (0.500\,kg)\cdot \left(333\,\frac{kJ}{kg} \right)[/tex]

[tex]Q = 166.5\,kJ[/tex]

Therefore, the correct answer is C.