The time it will take him to fall can be found from:-3m = -(g*t^2)/2
Find that time, it's the time the horse will travel horizontal while the cowboy is falling.So the horizontal distance away is 10 m/s * t
D. Apply unbalanced forces
Answer:
1.17
Explanation:
Given that,
The refractive index of ice wrt air = 1.31
The refractive index of rock salt wrt air = 1.54
We need to find the refractive index of rock salt with respect to ice.
We know that,
refractive index = (speed of light in air or vaccum)/( speed of light in that medium)
So,
The speed of light in ice = c/(1.31)
The speed of light in rock salt = c/(1.54)
So, the refractive index of rock salt with respect to ice is :
So, the required refractive index of rock salt wrt ice is 1.17.
Answer:
240meters/mins^2
Explanation:
Initial speed =70meters/minute
Final speed = 106meters/minute
Time =9 seconds
9/60 = 0.15mins
Acceleration = final speed - initial speed divided by time
That’s a = 106-70 /0.15
= 36/0.15
= 240meters/mins^2
D. It requires extremely high pressure.
Explanation:
Nuclear fusion is not used to generate electric energy in power plants because it requires extremely high pressure.
To start a nuclear fusion reaction, extreme temperature and pressure is needed to activate the process.
- Nuclear fusion is the combination of two nuclei to form a heavier one.
- The process occurs naturally at the core of stars where we have extremes of temperature and pressure.
- This cannot easily be achieved profitably and sustainable by current technologies.
Learn more:
Non-renewable source of energy brainly.com/question/2948717
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