Answer:37 J
Explanation:
Given
Step :1
Heat added Q=44 J
Work done=-20 J
Step :2
Heat added Q=-61 J
work done
as the process is cyclic
work done in compression is 37 J
Explanation:
Let
= distance traveled while accelerating
= distance traveled while decelerating
The distance traveled while accelerating is given by
We need the velocity of the rocket after 30 seconds and we can calculate it as follows:
This will be the initial velocity when start calculating for the distance it traveled while decelerating.
Solving for we get
Therefore, the total distance x is
Momentum = mass * velocity
= 1400 * 10
= 14000 kg m per sec
D. MgF₂
Explanation:
The compound that is held together by the electrostatic force between two ions is MgF₂.
Electrostatic force of attraction is exhibited primarily and only in ionic compounds.
In this type of bond;
- A metallic atom such as Mg will lose two of its valence electrons to form Mg²⁺
- Two non-metal ion that is highly electronegative such as "F" will gain the two electrons because they require an electron each to have a perfect octet.
- Two ions are now formed.
- In the vicinity of one another, they attract with an electrostatic force.
- This is why our answer is MgF₂.
- Electrostatic force occurs in ionic/electrovalent compounds
learn more:
Ionic bond brainly.com/question/10826758
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