An insulator is a material that provides resistance to the flow of electric current. Insulators include rubber, plastic, glass since they do not allow electricity to flow through them.
<span>a = (v2 - v1)/t= acceleration formula
a = (70 - 0)/7
a = 10 km/hr/sec
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It's better to use as few units as possible.
10 km/hr = 10 km*1000 m/km/(1 hr*3600 sec/hr) = 25/9 m/sec
a= 25/9 m/sec/se</span>
Answer:
Final speed of boat + man is 1.66 m/s
Explanation:
As we know that there is no friction on the system or there is no external force on this system
So here we can use momentum conservation here
![mv = (m + M)v_f](https://tex.z-dn.net/?f=mv%20%3D%20%28m%20%2B%20M%29v_f)
so we have
m = 85 kg
M = 135 kg
v = 4.30 m/s
now we have
![85 \times 4.30 = (85 + 135) v](https://tex.z-dn.net/?f=85%20%5Ctimes%204.30%20%3D%20%2885%20%2B%20135%29%20v)
![v = 1.66 m/s](https://tex.z-dn.net/?f=v%20%3D%201.66%20m%2Fs)
Answer:
The distance the train travels before coming to a (complete) stop = 40/81 km which is approximately 493.83 meters
Explanation:
The initial speed of the train u = 80 km/h = 22 2/9 m/s = 22.
m/s
The magnitude of the constant acceleration with which the train slows, a = 0.5 m/s²
Therefore, we have the following suitable kinematic equation of motion;
v² = u² - 2 × a × s
Where;
v = The final velocity = 0 (The train comes to a stop)
s = The distance the train travels before coming to a stop
Substituting the values gives;
0² = 22.
² - 2 × 0.5 × s
2 × 0.5 × s = 22.
²
s = 22.
²/1 = 493 67/81 m = 40/81 km
The distance the train travels before coming to a (complete) stop = 40/81 km ≈ 493.83 m.
Answer:
They can figure out when the person died, possibly the nature of crime, it can also detect if the body was moved in certain area.
Explanation: