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3 years ago

Whats the definition of combustion

Physics

2 answers:

tatyana61 [14]3 years ago

5 0

The process of burning something

Helga [31]3 years ago

4 0

The definition of <span>combustion is</span> burning something or combining a chemical combination with oxygen, heat, and light.

I hope this helps!

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An object 10 cm high is placed in front of a convex mirror of focal length 20 cm and the object is 30 cm from the mirror. Find t

kotegsom [21]

Answer:

Correct option is

Given; Focal length, f=20cm

Object distance, u=−10cm

Using mirror formula.

−

−10

(∵u=−10)

⇒v=

6 0

3 years ago

What is a pattern of motion in the solar system

Julli [10]

All the planets is the answer

3 0

3 years ago

The specific heat of soil is 0.20 kcal/kg*C and the specific heat of water is 1.00 kcal/kg*C. This means that if 1 kg of soil an

stiv31 [10]

Answer: The soil will be $4\°C$ warmer than the water.

Explanation:

The heat (thermal energy) absorbed can be found using the following equation:

$Q=m.C.\Delta T$

Where:

$Q$ is the heat

$m$ is the mass of the element

$C$ is the specific heat capacity of the material.

$\Delta T$ is the variation in temperature

$Q_{soil}=m_{soil}.C_{soil}.\Delta T_{soil}$ (1)

Where:

$Q_{soil}=1 kcal$

$m_{soil}=1 kg$

$C_{soil}=0.2 kcal/kg \°C$

$\Delta T_{soil}$

<u>In the case of water we have:</u>

$Q_{water}=m_{water}.C_{water}.\Delta T_{water}$ (2)

Where:

$Q_{water}=1 kcal$

$m_{water}=1 kg$

$C_{water}=1 kcal/kg \°C$

$\Delta T_{water}$

Isolating $\Delta T$ from both equations:

$\Delta T_{soil}=\frac{Q_{soil}}{m_{soil}.C_{soil}}$ (3)

$\Delta T_{soil}=\frac{1 kcal}{1 kg(0.2 kcal/kg \°C)}$

$\Delta T_{soil}=5\°C$ (4)

$\Delta T_{water}=\frac{Q_{water}}{m_{water}.C_{water}}$ (5)

$\Delta T_{water}=\frac{1 kcal}{1 kg(1 kcal/kg \°C)}$

$\Delta T_{water}=1\°C$ (6)

Comparing (4) and (6) we can find the soil will be $4\°C$ warmer than the water.

8 0

4 years ago

A steady flow of electrical charge is called:

Pavel [41]

A flow of electrical charge from one place to another
is called an electric current. It doesn't need to be steady.

7 0

3 years ago

Read 2 more answers

A proton has a positive electric charge of q = 1.6 × 10–19 coulombs. what is the electric potential at a point 5.3 × 10–11 m fro

Natalija [7]

B. The electric potential at the given point from the proton is 2.7 x 10¹ volts

<h3>Electric potential of the proton</h3>

The electric potential of the proton is calculated as follows;

V = kq/r

where;

k is Coulomb's constant
q is charge
r is distance

V = (9 x 10⁹ x 1.6 x 10⁻¹⁹)/(5.3 x 10⁻¹¹)

V = 27.2 volts

V = 2.7 x 10¹ volts

Learn more about electric potential here: brainly.com/question/14306881

#SPJ1

4 0

2 years ago