Answer:
Length of cable = 16.7 m
Distance from ground = 15.4
New angle between pole and cable = 58.5 degrees
Explanation:
The flagpole forms a right-angled triangle with the cable and the ground.
Let the adjacent side be the flagpole, the hypotenuse be the cable and the ground be the opposite side.
hypotenuse = h
adjacent = 6.8 m
distance from ground = d
angle = 66.0
cos 66 = 6.8/h
h = 6.8/cos 66
h = 16.7 m
tan 66 = d /6.8
d = 6.8 * tan 66
d = 15.3 m
If the cable is brought 4.2 m closer to the pole, new distance = 15.3 - 4.2 = 11.1 m
let new angle be x
tan x = 11.1/6.8
x = tan⁻¹ (11.1/6.8)
x = 58.5 degrees
Answer:
Distance, d = 0.049 meters
Explanation:
It is given that,
Mass of the pile, m = 2500 kg
It is dropped through a height of 8.0 m on each stroke, h = 8 m
The resisting force of the ground,
The work done in each stroke is equal to the potential energy of the pile driver such that,
Work done due to resistive force is :
So,
d is the distance covered by the post driven in on each stroke.
d = 0.049 meters
So, on each stroke the post driven is 0.049 meters far. Hence, this is the required solution.
Okay so static friction is when the atoms lock themselves into place, which makes it 'hard' to push until you exceed its static force.
You can calculate the Fs by finding your normal force and multiplying it by your static friction force.
N = mg = (9.8)(42) = 411.6 N
Fs = NKs = (411.6)(0.75) = 308.7
a) the maximum force of static friction between her socks and the floor is 308.7 N
b) If you push Mazie with a force of 350 she will slide. She will accelerate if you keep pushing her with the constant force, but if you push her and let go the kinetic friction will eventually bring her to a stop.
c) So this is an interesting question, she's going at a speed of 0.6 m/s. Kinetic friction is pushing her back so theres a negative force which is the force of kinetic friction right. So its NKf = (411.6)(0.62) = 255.192.
Today: fusion<span> power. </span>Fusion energy<span>, simply, is the exact opposite of fission </span>energy<span>, which comes from splitting an atom and is widely </span>used<span> to power </span>nuclear<span> plants and weapons. </span>Fusion<span> occurs constantly on our sun, which produces most of its </span>energy <span>via the </span>nuclear fusion<span> of hydrogen into helium.
Hope this helps! =)</span>
Answer:
lunar eclipse
Explanation:
if the earth is between to two (not bringing the moons orbit into account) a lunar eclipse happens