When you push a door closed it doesn't travel in a straight line it turns around the hinges this is an example of a line
Answer:
To have a positive job, the two vectors must have the same direction
Explanation:
Work is a scalar defined as the scalar product of two vectors, the froce and the displacement. To have a positive job, the two vectors must have
collinear and that their arrows point in the same direction.
You can also appreciate this from the work equation
W = F. r
bold indicate vector
W = F r cos θ
With θ the angle between force and displacement
Answer:
1.267 nanometers.
Explanation:
From the question,
Speed = distance/time.
S = d/t.................. Equation 1
Make d the subject of the equation,
d = S×t ............................... Equation 2
Given: S = 4.0 cm/year, t = 1 seconds = 3.17×10⁻⁸ years
Substitute into equation 2
d = 4×3.17×10⁻⁸ =
12.68×10⁻⁸ cm = 12.67×10⁻⁸×10⁷
d = 1.267 nanometers.
Hence the Tectonic plates move 1.267 nanometers.
Answer:
its C! I just finished the test on edg :)
Answer:
When original wave superimpose with its own reflected wave travelling in opposite direction then it will produce standing wave
Explanation:
Let say the equation of original wave is
now the equation of its reflected wave which is reflected 100% is given as
now by superposition of above two waves we will have
so above shows the equation of standing wave
so we can say that When original wave superimpose with its own reflected wave travelling in opposite direction then it will produce standing wave
