Answer:
A. The momentum of car A(5kg) is EQUAL to that of car B(0.5)
Explanation:
The moment, or impulse formula of the same forces acting on both car within 1 second is

In our case the forces are the same, the time duration of force acting on the cars are the same. Therefore, their momentum right after the force must also be the same.
Answer:

Explanation:
The centripetal force acting on the car must be equal to mv²/R, where m is the mass of the car, v its speed and R the radius of the curve. Since the only force acting on the car that is in the direction of the center of the circle is the frictional force, we have by the Newton's Second Law:

But we know that:

And the normal force is given by the sum of the forces in the vertical direction:

Finally, we have:

So, the minimum value for the coefficient of friction is 0.27.
After 4 half-lives, there was 1 gram.
1 half-life earlier, after 3 half-lives, there must have been 2 grams.
1 half-life earlier, after 2 half-lives, there must have been 4 grams.
1 half-life earlier, after 1 half-life, there must have been 8 grams.
1 half-life earlier, when it started decaying, there must have been 16 grams. <em>(B) </em>
Answer:
E = hf or 
Explanation:
The expression that gives the amount of light energy that is converted to other forms between the fluorescence excitation and emission events is given by :
E = hf
f is the frequency

c is the speed of light
is the wavelength
Hence, this is the required solution.
<span>There is an low cost and quickest alternative available for adaptive optics. Name of this technique is wavefront coding. The numerical analysis pretends to show the robustness of the technique under changes in pupil diameter and wavefront shape including intersubject and intrasubject variability, using always the same restoration filter or image decoder .Using this technique it is possible to obtain high resolution images under different ocular aberrations and pupil diameters with the same decoder, opening the possibility of real time high resolution images.</span>