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masha68 [24]
3 years ago
7

A softball travels 30m in 3s. What is the speed of the car?

Chemistry
1 answer:
MArishka [77]3 years ago
6 0

Answer: The Answer would be 10.

Explanation:

30 divided by 3 is 10.

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If a hydrogen atom and a helium atom have the same kinetic energy:________
Nuetrik [128]

Answer: If a hydrogen atom and a helium atom have the same kinetic energy then the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom.

Explanation:

The relation between energy and wavelength is as follows.

E = \frac{hc}{\lambda}\\

This means that energy is inversely proportional to wavelength.

As it is given that energy of a hydrogen atom and a helium atom is same.

Let us assume that E_{hydrogen} = E_{helium} = E'. Hence, relation between their wavelengths will be calculated as follows.

E_{hydrogen} = \frac{hc}{\lambda_{hydrogen}}    ... (1)

E_{helium} = \frac{hc}{\lambda_{helium}}         ... (2)

Equating the equations (1) and (2) as follows.

E_{hydrogen} = E_{helium} = E'\\\frac{hc}{\lambda_{hydrogen}} = \frac{hc}{\lambda_{helium}} = E'\\\lambda_{helium} = \lambda_{hydrogen} = E'

Thus, we can conclude that if a hydrogen atom and a helium atom have the same kinetic energy then the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom.

7 0
3 years ago
What is “monomer” mean?
oksano4ka [1.4K]

it is a molecule* that can be joined with other molecules that are identical to form a polymer*

key words :

a molecule:

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

a polymer:

a substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together

hope this helped, good luck in future studies !

-A

5 0
3 years ago
Eeeeeeeeeeeeeeeeeeeeeeeeeee
Varvara68 [4.7K]

Answer:

dolo HAHAHAAHAHHAHAHAHA

6 0
2 years ago
When the piston in the Boyle’s Law apparatus is at rest, what is the relationship between the pressure of the trapped gas and th
Andru [333]

Answer:

Pressure of the trapped gas and the pressure on the outside on the piston are the same.

Explanation:

When the piston is at rest, then it exist a mechanical equilibrium, that is to say, that pressure of the trapped gas is equal to the pressure on the outside of the piston.

7 0
3 years ago
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In the energy diagram, which number represents the potential energy of the products?
Lesechka [4]
I say Answer choice A because it is a straight line and it hasn't gone under all those reactions yet. 
6 0
3 years ago
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