Answer:
PE = 735 J
Explanation:
PE = mgh:
PE = (25)(9.8)(3) = 735 J
Answer:
2 double bonds
Explanation:
The atomic number (Z) of carbon is 6, so its electronic configuration is:
1s²
2s² 2p²
We can see that the valence electrons is 4, hence, the carbon can share 4 electrons with other atoms, forming 4 single bonds, and 2 double bonds.
For example, in the methane we have that the carbon can form 4 single bonds with the hydrogen:
H
|
H - C - H = CH₄
|
H
In the case of CO₂, we have that the carbon form 2 double bonds with the oxygen:
O = C = O
Therefore, the answer is 2, carbon can form 2 double bonds.
I hope it helps you!
Answer:
a.) 490m
b.) 98m/s
Explanation:
Given that the
Acceleration g = 9.8 m/s^2
Time = 10s
Since the parachutist jumps out of an aeroplane. The parachutist jumped out from rest. Initial velocity U is therefore equal to zero. That is,
U = 0
Distance covered = height H
The height can be calculated by using second equation of motion
H = Ut + 1/2gt^2
Substitute g and t into the formula
H = 1/2 × 9.8 × 10^2
H = 490 m
Therefore, she travels as far as 490 m
b.) Her final velocity can be calculated by using third equation of motion
V^2 = U^2 + 2gH
Substitute g and H into the formula.
Remember that U = 0
V^2 = 2 × 9.8 × 490
V^2 = 9604
V = sqrt (9604)
V = 98 m/s
Therefore, her final velocity is 98 m/s
Answer:
A town interested in installing wind turbines to generate electricity measures the speed of the wind in the town over the course of a year. They find that most of the time, the wind speed is pretty slow, while only rarely does the wind blow very fast during a storm. What would be the best measure of the central wind speed they should report to the mayor?
The median is the best measure of the central wind speed they should report to the mayor because the distribution is not symmetric. The distribution of wind speeds is skewed.
Explanation:
Based on the scenario described in the question, the median is the best measure of the central wind speed they should report to the mayor because the distribution is not symmetric. The distribution of wind speeds is skewed.
Are there any options or is it not a multiple choice question.