The ozone layer absorbs UV (ultraviolet) radiation. The answer is letter C. the ozone layer is able to oxidize the electros and photons in the UV rays so that the light that can pass through can be not harmful to humans.
The hardest known natural material is diamond!!! Good luck :)
Answer:
False
Explanation:
Inattentionla blindness is a condition that happens when you overview or do not notice an object that is not supposed to be in a certain place and that is strange for its context because you are paying attention to something else, this means that if you do a task that needs a great deal of attention you will actually increase the inattentional blindness.
The correct answer is F
The speed of the plane without a wind is 430 miles/hr and speed of the wind is 20 miles/hr.
Speed is a rate of change of distance with respect to time. i.e. v=dx÷dt. Speed can also be defined as distance over time
i.e. speed= distance ÷ time
it is denoted by v and its SI unit is m/s. it is a scalar quantity.
Speed shows how much distance can be traveled in unit time.
To find dimension for speed is, from formula
Speed = Distance ÷ Time
Dimension for distance is [L¹] ,
Dimension for Time is [T¹],
Dividing dimension of distance by dimension of time gives,
{L¹] ÷ [T¹] = [L¹T⁻¹]
Dimension for speed is [L¹T⁻¹].
Consider,
Speed of the plane = v
Speed of the wind = u
Speed of the wind in the direction of wind is,
v + u = 450 miles/hr.....1
Speed of the wind in the opposite direction of wind is,
v - u = 410 miles/hr.....2
Adding equation 1 and 2
2v = 860
v = 430 miles/hr
Subtracting equation 1 and 2
2u = 40
u = 20 miles/hr
Hence the speed of the plane without a wind is 430 miles/hr and speed of the wind is 20 miles/hr.
To know more about Speed :
#SPJ2.
the plane is 430 and the wind it 20miles
Answer:
Explanation:
Power = work/time
Work = force x distance
power = force X distance/time (velocity)
power = 200N x 2m/s
power = 400 joules