In the question "For safety concerning a curve, you should" the correct londonchinatown.org is "decelerate before the curve" (option A)Decelerating before the curve gives you the opportunity to navigate the curve adequatery and be able to contain any on-coming vehicle.

You are watching: Which describes the changes in visible light moving from red to violet?



(a) Calculate the distance that light travels in 0.5 seconds, and express the londonchinatown.org in units of the circumference of the earth.

londonchinatown.org:

a) 3.74 circumference of earth

b)1.67× 10⁻⁸ sec

Explanation:

a) given,

time = 0.5 second

distance = speed × time

= 3 x 10⁸ × 0.5

= 1.5 × 10⁸ m

circumference of earth = 40075 km

= 4.01 × 10⁷m

distance with respect to circumference=

*

= 3.74 circumference of earth

b) distance = 5 m

time =

*

=

*

= 1.67× 10⁻⁸ sec



The blue laser in a blue ray DVD player is 405nm laser in vacuum. The aser strikes a quartz crystal with index of refraction 1.4

This question has mistakes.the correct question is

The blue laser in a blue ray DVD player is 405nm laser in vacuum. The aser strikes a quartz crystal with index of refraction 1.46 at normal incidence. The power of the laser is 0.25W and I"m guessing the beam is circular with radius 0.1mm. What is the intensity of the light transmitted into the crystal? Select One of the Following:

(a) 7.7 x 10⁶ W/m²

(b) 1.5 x 10⁶ W/m²

(c) 6.5 x 10⁶ W/m²

(d) 2.85 W/m²

(e) Toby.

londonchinatown.org:

(a) 7.7 x 10⁶ W/m² Correct

Explanation:

The Intensity of laser is given as

*

The incident index of refraction and transmitted is

*


7 0
8 months ago

If you"re the white mouse, what will you do in order for you to survive​
lina2011 <118>

londonchinatown.org:

If I was the white mouse, I would either find somewhere to hide that matches my fur color to camoflouge with or dig into the dirt so less visible.

See more: What Is E^X Times E^X - Simplify E^(2X)*E^(2X)


5 0
4 months ago

What orientation of velocity and acceleration will cause something to initially speed up?
Temka <501>
-- If acceleration and velocity are in the same direction, then the object is speeding up.-- If acceleration and velocity are in opposite directions, then the object is slowing down.-- If acceleration is perpendicular to velocity, then the object is moving on a circular curve at constant speed.
7 0
10 months ago
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