D. NaOH + HCI NaCl + H,0
Explanation:
The last option is a double displacement/replacement reaction.
This reaction is a neutralization reaction in which an acid combines with a base to produce salt and water only.
NaOH + HCl → NaCl + H₂O
- A double displacement reaction is one that occurs between ionic compounds.
- In this reaction, there is an actual exchange of reaction partners.
One of the following conditions serves as a driving force;
- Formation of water or any other non-ionizing compound
- Liberation of gases
- Formation of a precipitate
learn more:
Precipitate formation brainly.com/question/8896163
#learnwithBrainly
Negative... it would then be in space and eventually killing us for
1.) it could block the sun and we would slowly freeze to death
and 2.) it could one day find its way back into earth and comes casing into the earth casing a meager food chain mouth-function.
i suck at spelling just fyi.
Answer: 
Explanation:
Density is a characteristic property bodies and materials, and is defined as the relationship between the mass 
and the volume 
, as shown below:
(1)
In the case of the neutron star, we know it has the same mass as the Sun:
And its radius is 
On the other hand, if we assume this neutron star has a spherical shape, its volume can be calculated by the following formula:
(2)
(3)
(4)
Substituting (4) in (1):
(5)
Finally:
Answer:
3.64×10⁸ m
3.34×10⁻³ m/s²
Explanation:
Let's define some variables:
M₁ = mass of the Earth
r₁ = r = distance from the Earth's center
M₂ = mass of the moon
r₂ = d − r = distance from the moon's center
d = distance between the Earth and the moon
When the gravitational fields become equal:
GM₁m / r₁² = GM₂m / r₂²
M₁ / r₁² = M₂ / r₂²
M₁ / r² = M₂ / (d − r)²
M₁ / r² = M₂ / (d² − 2dr + r²)
M₁ (d² − 2dr + r²) = M₂ r²
M₁d² − 2dM₁ r + M₁ r² = M₂ r²
M₁d² − 2dM₁ r + (M₁ − M₂) r² = 0
d² − 2d r + (1 − M₂/M₁) r² = 0
Solving with quadratic formula:
r = [ 2d ± √(4d² − 4 (1 − M₂/M₁) d²) ] / 2 (1 − M₂/M₁)
r = [ 2d ± 2d√(1 − (1 − M₂/M₁)) ] / 2 (1 − M₂/M₁)
r = [ 2d ± 2d√(1 − 1 + M₂/M₁) ] / 2 (1 − M₂/M₁)
r = [ 2d ± 2d√(M₂/M₁) ] / 2 (1 − M₂/M₁)
When we plug in the values, we get:
r = 3.64×10⁸ m
If the moon wasn't there, the acceleration due to Earth's gravity would be:
g = GM / r²
g = (6.672×10⁻¹¹ N m²/kg²) (5.98×10²⁴ kg) / (3.64×10⁸ m)²
g = 3.34×10⁻³ m/s²
Your answer would be C.
A step-up transformer is a transformer that raises voltage from main to secondary by having more secondary winding turns than primary winding turns.
Hope this helps; have a great day!
