Answer:
Explanation:
(Power) = (Work) / (Time) = (Force) * (Displacement) / (Time) = (Force) / (Velocity)
The power is about 1.3e+05 Watts.
Answer:
Lenses are very important for us. Without lenses even we can't imagine the world. Without lenses our life is like life without colors.
Explanation:
Lenses are used everywhere around us in car, truck, glass, headlamps etc. It is also present in the flashlight of the LED light that is used in electronic materials.
Our eyes have also most amazing lenses. When you look at ground, at sky, and staring at moon all that happen that because of our binocular lenses. Our eyes have two type of lenses that concave lenses and convex lenses.
By these lenses we can see far and near object6s easily. Thus we used special applications of lenses to see the objects.
<h2>
Answer:</h2><h3><u>QUESTION①)</u></h3>
<em>✔ First step : calculate the kinetic energy that this car requires to reach 95 km/h</em>
95/ 3,6 ≈ 26,4 m/s
<em>Ec = ½ m x V² </em>
With Ec in J; m in kg; and V in m/s
- Ec = ½ 1750 x 26,4²
- Ec ≈ 610 000 J
<em>✔ Knowing that the car has a p power of 215,000 W, so :
</em>
T = E/P
- T = 610 000/215 000
- T ≈ 2.8 s
<h3>
The car takes 2.8 s to reach 95 km/h </h3>
<h3><u>QUESTION②)</u></h3>
N = 2,8/6,5 x 100 = 43.07
<h3>The car efficiency is 43 % </h3>
A) Because the 2 missing electrons leave 2 protons without counterpart (the neutrons don;t matter at all here)
You need the kinematic equation for distance as a function of acceleration:
![d = [v(initial) *t] + 0.5a*t^{2}](https://tex.z-dn.net/?f=d%20%3D%20%5Bv%28initial%29%20%2At%5D%20%2B%200.5a%2At%5E%7B2%7D)
where a = gravitational acceleration 9.8m/s^{2}
v(initial) = starting velocity
t = time of fall
if the stone started at rest then v(initial) = 0 making the equation simply
Let me know if you still need further help :)
