B) 48.0 m/s
We can actually start to solve the problem from B for simplicity.
The motion of the rock is a uniformly accelerated motion (free fall), so we can find the final speed using the following suvat equation
where
is the final velocity
is the initial velocity (positive since we take downward as positive direction)
is the acceleration of gravity
s = 110 m is the vertical displacement
Solving for v, we find the final velocity (and so, the speed of the rock at impact):
A) 3.67 s
Now we can find the time of flight of the rock by using the following suvat equation
where
is the final velocity at the moment of impact
is the initial velocity
is the acceleration of gravity
t is the time it takes for the rock to reach the ground
And solving for t, we find
Red, Orange, Yellow, Green, Blue, Indigo, Violet.
Remember ROYGBIV.
The phases of mitosis in order from first to last are: Interphase, prophase, metaphase, anaphase, and telophase & cytokinesis.
I think rubbing two pieces of woods together will have more friction than wood rubbing against a smooth metal.
<u>Explanation:</u>
The friction offered by surfaces has a great role in deciding the ease of movement of objects along the surface.
The friction of the surface depends upon its roughness. Rough surfaces offer greater friction than smooth surfaces.
In this question wooden pieces have greater friction than that of smooth metal. So rubbing two wooden pieces together will have greater friction than rubbing a wooden piece against a smooth metal.
Answer:
0.0173 V
Explanation:
PARAMETERS GIVEN:
Inductance, L = 2 mH = 0.002 H
Time interval, dt = 0.15 s
Change in current, dI = 1.5 - 0.2 = 1.3 A
The magnitude of the induced EMF is given as:
EMF = | -L*dI/dt |
EMF = (0.002 * 1.3) / 0.15
EMF = 0.0173 V
