Inertia: <span>The </span>law<span> of </span>inertia says <span>that an object at rest stays at rest and an object in motion stays in motion unless a force does something.</span>
Answer:
S = 40.8m
Explanation:
<u>Given the following data;</u>
Initial velocity, u = 2m/s
Acceleration, a = 1.6m/s²
Time, t = 6secs
Required to find the displacement
Displacement, S = ?
The displacement of an object is given by the second equation of motion;
Where;
- S represents the displacement measured in meters.
- u represents the initial velocity measured in meters per seconds.
- t represents the time measured in seconds.
- a represents acceleration measured in meters per seconds square.
<em>Substituting into the equation, we have;</em>
S = 40.8m
<em>Therefore, the displacement of the skateboarder during this game is 40.8 meters. </em>
Answer:
I would say that the answer is B because it is the most reasonable one
Explanation:
Answer:
Looking straight downward into a rain puddle whose surface is covered with a thin film of gasoline, you notice a swirling pattern of colors caused by interference inside the gasoline film. The point directly beneath you is colored a beautiful iridescent green. You happen to remember that the index of refraction of gasoline is 1.38 and that the wavelength of green light is about 540 nm .
Explanation:
In this case we have that the refractive index of gasoline is higher than the refractive index of air and water, therefore the maxima and minima are determined by the relationship:
2
n
d = {
( m + 1 /2
) λ max
m λ min
Since we are observing a colorful pattern, it means that we are observing the interference maximums:
2
n
d = ( m + 1/
2 ) λ ⇒ d = ( m + 1/
2
) λ
/2
n
∴ ⎪ m = 0 ⇒ d
0 = ( 0 + 1/
2
) 538
n
m / 2
⋅
1.38 = 97.5
n
m
⎪ m = 1 ⇒ d
1 = ( 1 + 1/
2
) 538
n
m / 2
⋅
1.38 = 292
n
m
⎪ m = 2 ⇒ d
2 = ( 2 + 1/
2
) 538
n
m / 2
⋅
1.38 = 487n
m
In all cases the thickness of the film is less than the wavelength of the light. This makes it possible to ensure that the rays reflected on the anterior and posterior surface belong to the same wavefront and therefore guarantee coherence between them.
The points are:
(a) x = 0.500 m, y = 0, z = 0 (b) x = 0, y = 0, z = +0.500 m
Answer:
a) 
b) 
Explanation:
The magnetic field can be calculated as follows:
a) The velocity vector is in +y direction and the point is on x-axis
Because 
,
b) The velocity vector is in +y direction and the point is on z-axis
Because 
,
