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lana66690 [7]
2 years ago
5

What is the pressure at a depth of 15 cm brine of density 1.2/cm³? ​

Physics
2 answers:
Anna [14]2 years ago
6 0

P = density × gravity acceleration × height

P = 1200 × 9.81 × 15/100

P = 1765.8

kari74 [83]2 years ago
6 0

From the question we have got;

  1. Height: 15 cm = 15/109m = 15 × 10-²
  2. Density: 1.2 cm³= 1.2g/cm³ = 1.2 × 10³ kg/m³
  3. Acceleration due to gravity:10m/s²

Pressure = ρgh

= 15 × 10-² × 1.2 × 10³ × 10

= 1800 Nm-²

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DaniilM [7]

Answer:

\frac{t_1}{t_2} = \frac{sin\theta_1}{sin\theta_2}

Explanation:

The vertical component of the initial velocities are

v_v = v_0sin\theta

If we ignore air resistance, and let g = -9.81 m/s2. The the time it takes for the projectiles to travel, vertically speaking, can be calculated in the following motion equation

v_vt - gt^2/2 = s = 0

t(v_v - gt/2) = 0

v_v - gt/2 = 0

t = 2v_v/g = 2v_0sin\theta/g

So the ratio of the times of the flights is

t_1 / t_2 = \frac{2v_0sin\theta_1/g}{2v_0sin\theta_2/g} = \frac{sin\theta_1}{sin\theta_2}

8 0
2 years ago
An airplane has a starting velocity of 300m/s. It then accelerates at a rate of 45m/s2 for a time of 10s. What is it's final vel
Olenka [21]
A = (v - u) / t

a = acceleration
v = final velocity
u = initial velocity
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45 = (v - 300) / 10

45 × 10 = v - 300

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Hope this helps!

P.S. Let me know if you need an explanation
8 0
2 years ago
A charged sphere with 1 × 10 8 units of negative charge is brought near a neutral metal rod. The half of the rod closer to the s
jeyben [28]

Answer:

-4*10⁴ units.

Explanation:

As the metal rod was initially neutral (which means that it has the same quantity of positive and negative charges), after being close to the charged sphere, as charge must be conserved, the total charge of the metal rod must  still remain to be zero.

So, if due to the influence of the negative charge in the sphere, the half of the road closer to the sphere has a surplus charge of +4*10⁴ units, the charge on the half of the rod farther from the sphere must be the same in magnitude but of the opposite sign, i.e., -4*10⁴ units.

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Are basins a collection of smaller watersheds
mihalych1998 [28]

Explanation:

both are areas of land that drain to particular water bodies such as lakes

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In this reaction diagram which part represents the doffrence in energy between the reactants and the products?
Annette [7]

Answer:

The correct answer is - option C. G.

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The overall energy of the reaction, including or excluding activation energy depends on the nature of the reaction if it is exothermic or endothermic. and products are represented by the G which shows the difference between the energy of the reactants and products.

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