Answer:
100
Step-by-step explanation:
Answer:
A pi bond restricts rotation about the bond axis while a sigma bond allows almost free rotation.
Basically this means it’s mirroring across the y axis on the opposite side
Judy travel's 15.125 miles or 15
miles in 2 3/4 hours
How to solve such time related questions?
The key concept for solving such questions is the relationship between speed, distance and time.
The relationship between them is Distance = Speed x Time
Given:
- Speed = 5 1/2 miles per hour
- Time = 2 3/4 hours
Substituting it in the relationship we get,
Distance = Speed x Time
Distance = 5 1/2 miles per hour x 2 3/4 hours
Distance = 
miles
Distance = 
miles or 15 miles
Thus Judy travel's 15.125 miles or 15 miles in 2 3/4 hours
Learn more about time related questions here :
brainly.com/question/16403317
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Answer:
<h3>78miles/hour</h3>
Step-by-step explanation:
If a helicopter flies 312 miles against the wind in 2 hours, the speed of the helicopter in air is expressed as shown;
Speed = Distance/Time
Speed = 312miles/2hours
Speed = 156miles/hr
The speed of the helicopter against the wind is 156miles/hr
If it can fly 468 miles in the same amount of time, the speed during this time at this distance will be;
speed = 468 miles/2hours
Speed = 234miles/hr
The speed of the helicopter in still air = Speed while flying - Speed while against the wind
The speed of the helicopter in still air = 234miles/hr - 156miles/hr
The speed of the helicopter in still air = 78miles/hour
