Why is it necessary to collimate the light source before using the prism to disperse the light?.
1 answer:
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*Graph is attached with the answer*
Answer:
Total distance traveled by the car is 40 m
Explanation:
It can be seen from the graph that for the first 4 second car is moving with uniform acceleration and for next 2 second it has constant velocity
So, we solved this question in 2 parts
Part 1:
initial velocity = v₁ = 0 m/s
final velocity = v₂ = 10 m/s
time = t = 4 s
acceleration = a = (v₂ - v₁)/t
a = 10/4 = 2.5 m/s²
Using 3rd equation of motion
2as = v₂² - v₁²
2(2.5)s = 10²
s₁ = 100/5
s₁ = 20 m
Part 2:
s₂ = v₂t
s₂ = 10 × 2
s₂ = 20 m
Total distance = S = s₁ + s₂
= 20 + 20
S = 40 m
Answer:
64.20m
Explanation:
As we can see from the image I have attached below, the route that the chipanzee makes forms a right triangle. In this case, the shortest distance is represented by x in the image, which is the hypotenuse. To find this value we use the Pythagorean theorem which is the following.
where a and b are the length of the two sides and c is the length of the hypotenuse (x). Therefore, we can plug in the values of the image and solve for x
2,601 + 1,521 =
4,122 = ... square root both sides
64.20 = x
Finally, we see that the shortest distance is 64.20m
For a curved mirror, the radius of curvature R is twice the focal length f:
(1)
Since the diameter d is twice the radius R, we can rewrite (1) as
From which we can calculate the focal length from the diameter:
Since the diameter d is twice the radius R, we can rewrite (1) as
From which we can calculate the focal length from the diameter: