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4 years ago

Which is heavier—warm air or cold air?

1 answer:

5 0

Cold air. This is because there is more water in hot air due to its capacity for humidity and the water particles are actually less massive than the particles in cold air.

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What war the answers?

Wewaii [24]

~Hello There!~

An atom can be identified by its elemental number. The atomic number is equal to the number of protons located in the nucleus. The protons are positively charged particles. Each ion has a specific place in an atom. Electrons are located outside of the nucleus. The electrons are arranged by the electron shells in the atom(?). Each element has electrons that can only hold a certain number of electrons for each energy level. Electrons have many shells - the electron cloud/shell with the most energy is known as the valence(?). The valence electrons are located at the outermost shell of the electron cloud.

Hope This Helps You!

Good Luck :)

Have A Great Day ^_^

- Hannah ❤

3 0

3 years ago

A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically

Elanso [62]

Answer:

The velocity and mass of the target ball are 1.6 m/s and 1.29 kg.

Explanation:

Given that,

Mass of softball = 0.220 kg

Speed = 5.5 m/s

(a). We need to calculate the velocity of the target ball

Using conservation of momentum

$m_{1}u_{1}+m_{2}u_{2}=m_{1}v_{1}+m_{2}v_{2}$

$0.220\times5.5+m_{2}\times0=0.220\times(-3.9)+m_{2}v_{2}$

$1.21=-0.858+m_{2}v_{2}$

$m_{2}v_{2}=2.068$ ....(I)

The velocity approach is equal to the separation of velocity

$u_{1}-u_{2}=v_{2}-v_{1}$

$5.5-0=v_{2}-(-3.9)$

$v_{2}=1.6\ m/s$

(b). We need to calculate the mass of the target ball

Now, Put the value of v₂ in equation (I)

$m_{2}\times1.6=2.068$

$m_{2}=\dfrac{2.068}{1.6}$

$m_{2}=1.29\ kg$

Hence, The velocity and mass of the target ball are 1.6 m/s and 1.29 kg.

3 0

3 years ago

Two particles, one with charge -6.29 × 10^-6 C and one with charge 5.23 × 10^-6 C, are 0.0359 meters apart. What is the magnitud

navik [9.2K]

Answer:

Force, F = −229.72 N

Explanation:

Given that,

First charge particle, $q_1=-6.29\times 10^{-6}\ C$

Second charged particle, $q_2=5.23\times 10^{-6}\ C$

Distance between charges, d = 0.0359 m

The electric force between the two charged particles is given by :

$F=k\dfrac{q_1q_2}{d^2}$

$F=9\times 10^9\times \dfrac{-6.29\times 10^{-6}\times 5.23\times 10^{-6}}{(0.0359)^2}$

F = −229.72 N

So, the magnitude of force that one particle exerts on the other is 229.72 N. Hence, this is the required solution.

4 0

3 years ago

Which of the following is an example of a solution: the atmosphere, milk, an Italian salad dressing, are muddy water

weeeeeb [17]

A milk

Explanation:

A solution is a homogeneous mixture of solutes and solvents. The solute is the substance usually solid dissolved to make the solution.

The solute is usually present in small amount compared to the solvent.
A milk is solution of different components.
Most liquid milk are made up of powdered milk dissolved in water and sugar added to it.
All the constituent will now exist in a single phase as a liquid and be homogeneous.
They are homogeneous in the sense that all the parts are uniform.

Learn more:

Mixtures brainly.com/question/1446244

#learnwithBrainly

5 0

4 years ago

Which is the most extreme system of social inequality?

Anna [14]

Possible answers are:
Capitalism
Aristocracy
Oligarchy

5 0

3 years ago