In which medium will a sound wave move more quickly? Ethanol, air, vacuum, rock.

What pressure is exerted on the bottom of a 0.500-m-wide by 0.900-m-long gas tank that can hold 50.0 kg of gasoline by the weigh

Natasha_Volkova [10]

Answer:

1088.89 Pa

Explanation:

According to the Newton's second law of motion:-

$Force=Mass\times Acceleration$

Mass = 50.0 kg

Acceleration = g = 9.81 m/s²

So,

$Force=50.0\times 9.8\ kgm/s^2$

Force = 490 N

Area of the base = $length\times breath$ = $0.500\times 0.900$ m² = 0.45 m²

Pressure = Force/Area = $\frac{490\ N}{0.45\ m^2}$ = 1088.89 Pa

8 0

4 years ago

Which conditions are necessary for sleet to form?

Monica [59]

Answer:

it is c because sheet is kinda like thin pieces of ice.

4 0

3 years ago

What best describes the advantage of using the model of a food web?

Illusion [34]

Answer:

Hello, Otaku Kun Here! >:3

Explanation:

What Best describes the advantage of using the model of a food web? 1. Shows feeding connections 2. Explains every detail of wildlife 3. Shows a complex mental model 4. Represents data collected from space

hope this helps!

from: Otaku Kun! ^^

8 0

3 years ago

What is the role of an indicator in an acid-base titration? In your answer, identify how an appropriate indicator is chosen and

Anton [14]

An indicator shows where the endpoint of a titration is. Different indicators will change colors at different equivalence points. Phenolphthalein will change colors at around pH7.5 or so, and others like Methylene Blue will change around a pH of 6. Different titrations will have different pH's at different equivalence points.

6 0

3 years ago

Read 2 more answers

Which formula represents a polar molecule? (1) O2 (2) CO2 (3) NH3 (4) CH4

lara [203]

Answer: Option (3) is the correct answer.

Explanation:

A molecule is polar when the net dipole moment of molecule is zero. When an electronegative atom is attached to an electropositive atom then the electronegative atom pulls the shared pair of electrons more towards itself.

As a result, the movement of electrons is more towards the electronegative atom and the dipole moment becomes zero. This will also induce partial positive and partial negative charge on electropositive and electronegative atom.

On the other hand, $O_{2}, CO_{2}, and CH_{4}$ are covalent compounds and does not have a net zero dipole moment.

Thus, we can conclude that out of the given options $NH_{3}$ represents a polar molecule.

7 0

4 years ago