Answer:
1 only
Explanation:
a compound is a mix of two different elements, two of the same element is just a molecule
Answer:
V = 1.35 m/s
Explanation:
Given that,
Mass of a railroad car, m₁ = 25,000 kg
Initial speed of a railroad car, u₁ = 4.5 m/s
Initial speed of railroad car that is full of coal, u₂ = 0 (at rest)
We need to find the final velocity of the two railroad cars if they move as one after the collision. It is a case of inelastic collision in which the momentum remains conserved. Using the conservation of linear momentum as follows :
V is the final speed and u₂ = 0
So, the final velocity of the two railroad cars is 1.35 m/s.
P waves move quickly and S waves move slowly through solids,
Explanation:
S and P waves can move through a solid material. P waves generally moves quickly and S-waves move slowly through solids.
S and P waves elastic seismic waves.
- P waves are primary waves travels through any material medium. They move faster than S-waves.
- S waves are secondary waves that moves through solid only. They are shear waves.
- They cannot move through liquids and gases because these materials cannot be sheared.
At a seismic station, P waves arrives first because they have a higher velocity
Learn more:
Seismograph brainly.com/question/11292835
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Answer:
[OH-] = 0,071 mol/L
Explanation:
pOH = -log[OH-]
[OH-] = 10^-pOH = 10^-1.15 = 0,071 mol/L
Answer:
False
Explanation:
There are two types of covalent bonding: polar covalent boding and nonpolar covalent bonding. During polar covalent bonding, the electrons are not shared evenly. This is due to the electronegativity differences between the two atoms. During nonpolar covalent bonding, the electrons are shared evenly.