<span>The characteristic not observed is the sun and planets rotate in the same direction. The planets in the solar system go around the sun. The sun is in a fixed position relative to planets. The time one planet takes to go around the sun is a year on that planet. the suns gravity keeps the solar system together and th planets revolving aroud it </span>
Answer:
The energy dissipated as the puck slides over the rough patch is 1.355 J
Explanation:
Given;
mass of the hockey puck, m = 0.159 kg
initial speed of the puck, u = 4.75 m/s
final speed of the puck, v = 2.35 m/s
The energy dissipated as the puck slides over the rough patch is given by;
ΔE = ¹/₂m(v² - u²)
ΔE = ¹/₂ x 0.159 (2.35² - 4.75²)
ΔE = -1.355 J
the lost energy is 1.355 J
Therefore, the energy dissipated as the puck slides over the rough patch is 1.355 J
Answer:
a) the frequency of the wave is 0.2 Hz
b) the speed of the wave 4 m/s
Explanation:
Given that;
time period = to complete one cycle t = 5 sec
frequency f = 1/t
frequency f = 1 / 5sec
f = 0.2 Hz
Therefore the frequency of the wave is 0.2 Hz
b)
speed of wave V = λf
given that our wavelength is 20.0 m
we substitute
speed of wave V = 20.0 × 0.2
speed of wave V = 4 m/s
Therefore, the speed of the wave 4 m/s
Answer:
attractive toward +x axis is the net horizontal force
attractive toward +y axis is the net vertical force
Explanation:
Given:
- charge at origin,

- magnitude of second charge,

- magnitude of third charge,

- position of second charge,

- position of third charge,

<u>Now the distance between the charge at at origin and the second charge:</u>



<u>Now the distance between the charge at at origin and the third charge:</u>



<u>Now the force due to second charge:</u>


attractive towards +y
<u>Now the force due to third charge:</u>


attractive
<u>Now the its horizontal component:</u>

attractive toward +x axis
<u>Now the its vertical component:</u>

upwards attractive
Now the net vertical force:


