Well, first of all, if the ramps are perfectly frictionless, then the ball
won't roll ... it'll slide. Kind of like a bowling ball does at the beginning
of a shiny, highly-waxed lane. You need friction against the ball to roll it.
But in any case, no matter what the slopes of the ramps are, even
if they have different slopes, the ball will rise on the second ramp
to the same height from which it was released on the first ramp.
Answer:
55 Fahrenheit
Explanation:
Geothermal energy uses steam to produce electricity.
Answer:
We live in a very adaptable environment. If we cannot adapt to the environment, we will not be able to survive.
Explanation:
Answer:
An electric chemical cell is not always needed to have a power circuit. But every other part is.
Answer:
The fluids speed at a) 
and b) 
are 
and 
respectively
c) Th volume of water the pipe discharges is: 
Explanation:
To solve a) and b) we should use flow continuity for ideal fluids:
(1)
With Q the flux of water, but Q is 
using this on (1) we have:
(2)
With A the cross sectional areas and v the velocities of the fluid.
a) Here, we use that point 2 has a cross-sectional area equal to 
, so now we can solve (2) for 
:
b) Here we use point 2 as 
:
c) Here we need to know that in this case the flow is the volume of water that passes a cross-sectional area per unit time, this is 
, so we can write:
, solving for V:
