Answer: option D. 4
Reasoning:
Assuming that the time elapsed between any two consecutive dots is the same, and that the second dot marks second 1, the column with 3 dots marks second 2, and the dot right most marks second 3, the motorcycle has positive acceleration after 4 seconds.
That is because:
1) from the first dot to the second dot: the velocity the lenght of the arrow that models the velocity decrases, which means that the acceleration is negative.
2) In the nex group of dots the length of the arrow remains equal, which means that the velocity is constant and the acceleration is 0.
3) For the last dot, the length of the arrow is greater, which means that the velocity increases, and so the acceleration is positive.
Answer:
The more velocity an object has the harder it is to slow it down
Explanation:
slow it down
I'm 90% sure the answer is A. black hole
Answer:
Option (E)
Explanation:
Nuclear energy is directly obtained from the elements that are radioactive in nature. The use of nuclear energy doesn't emit any greenhouse gas and there is no burning of fossil fuels. In order to extract the non-renewable resources from a particular area, a huge amount of money is required to carry out the entire process.
So in comparison to that, nuclear energy is much efficient to use but there is a problem with the disposal of the waste materials that are released in the mines. This is harmful as there is continuous emission of radiation releasing from these wastes.
Nuclear energy is therefore carried out at a relatively isolated place away from the human settlement areas and is quite workable in comparison to the non-renewable sources of energy.
Thus, the correct answer is option (E).
Answer:
A) first laser
B) 0.08m
C) 0.64m
Explanation:
To find the position of the maximum you use the following formula:
m: order of the maximum
λ: wavelength
D: distance to the screen = 4.80m
d: distance between slits
A) for the first laser you use:
for the second laser:
hence, the first maximum of the first laser is closer to the central maximum.
B) The difference between the first maximum:
hence, the distance between the first maximum is 0.08m
C) you calculate the second maximum of laser 1:
and for the third minimum of laser 2:
Finally, you take the difference:
hence, the distance is 0.64m