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3 years ago

Please help me, anyone????

Physics

1 answer:

sergeinik [125]3 years ago

7 0

Answer:

I don't exactly understand this but the child should hear a beep lower than 500 hz when he/she moves the car further away. If you don't find my answer appealing sorry but I don't do physics.

Explanation:

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When popcorn is heated over a flame, the kernel burst open. why does this occur?

Bezzdna [24]

If you faced the situation when popcorn is heated over a flame and the kernel burst opened the thing which caused that is definitely : the air and water vapor which remain in the kernell have expanded.
Hope that helps.

4 0

3 years ago

If the man has initial velocity of 0.4 m/s, acceleration is 0.343 m/s^2, a time of 5.8 seconds, and experimental final velocity

agasfer [191]

Answer:

The answer is going to be C.

Explanation:

Trust me. Im an expert in physics

6 0

3 years ago

All the scientific theories used to explain the formation of the solar system are. . outdated. . imaginative. . non-testable. .

maria [59]

The correct answer for the statement “All the scientific theories used to explain the formation of the solar system are non-testable”. The answers outdated, imaginative and unacceptable are wrong. These theories are not proven and yet are not tested due to the complexity.

3 0

3 years ago

Read 2 more answers

Question

nataly862011 [7]

The density of a material is constant and it is given by the ratio of the mass to the volume of the material

The mass of the liquid and the full bottle ae

The mass of the liquid is 450 g

The mass of the filled bottle is 530 grams

The reason the above values are correct are as follows:

The given parameters are;

Volume of the bottle, V = Half litre

Mass of the bottle, $m_b$ = 80 g

The volume of liquid in the bottle when filled, V = 500 cm³

The density of the olive oil with which the bottle is filled, ρ = 0.9 g/cm³

a. Required:

To calculate the mass of oil in the bottle

Solution:

The volume of oil in the bottle when the bottle is filled, V = 500 cm³

$Density, \ \rho = \dfrac{Mass}{Volume} = \dfrac{m}{V}$

The mass of the liquid, m = ρ × V

∴ m = 0.9 g/cm³ × 500 cm³ = 450 g

The mass of the liquid, m = 450 g

b. The mass of the oil in the bottle, m = grams

The mass of the full bottle, $m_{filled}$ = m + $m_b$

∴ $m_{filled}$ = 450 g + 80 g = 530 g

The mass of the full bottle, $m_{filled}$ = 530 grams

Learn more about density here:

brainly.com/question/18110802

4 0

3 years ago

A 34.1-mL sample of benzene at 20.8°C was cooled to its melting point, 5.5 °C, and then frozen at 5.5 °C. Calculate the quantity

posledela

Answer:

4541.8 J

Explanation:

First we find the mass of benzene available

mass = density x volume

= 0.867 x 34.1

= 29.5647 g

Then we find the amount of heat transferred by two processes:

heat tranferred = heat lost during temp drop + heat lost during freezing

= mcΔT + mL

= 29.5647 x 1.74 x (20.8 - 5.5) + 29.5647 x 127

= 4541.7883434 J

= 4541.8 J

3 0

3 years ago

Read 2 more answers