The answer ultraviolet rays just got it right on the test
The centripetal acceleration of the space shuttle is 
(0.9g)
Explanation:
The period of revolution of the space shuttle is
From the period, we can calculate the angular speed of the space shuttle, which is given by
Now we can calculate the centripetal acceleration of the space shuttle, given by
where
is the angular speed
is the distance of the shuttle from the Earth's centre (it is the sum of the Earth's radius, 6400 km, and of the altitude of the space shuttle, 300 km)
Substituting and solving, we find
And since 
, this can be rewritten as
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Answer:
This is due to refraction of light
Explanation:
When a straw is placed in a glass it appears to be broken as a result of refraction of light on the air-water interface.
Since, the refractive index of water is more than that of glass.
Also, water is denser than air, which means light travels slower in water than in air.
Most importantly, When light travels from rarer to denser medium it bents towards the normal and deviates from its original path which explains the broken view of straw in a glass of water.
Answer:
r = -11.6 cm
Explanation:
As we know that the position of center of mass is given as
now we know that three masses are on the left while two are on the right
position of left most mass with respect to the center of the rod is given as
Now we will have
Answer:
Transverse waves
Explanation:
Transverse waves are a type of wave that oscillates perpendicular to the direction of movement (the direction of propagation). These type of waves are usually represented by the sine or cosine functions due to the up and down oscillation of the waves.
In the case of water waves the thing that oscillates up and down are the <u>water particles</u> affected by the disturbance.
And for the case light waves what oscillates are the <u>electric and magnetic fields</u>, both oscillating perpendicular to the direction of light propagation.
