Answer:
1.) How do solar thermal generators work?
D.) They use solar cells to covert sunlight directly into electricity
2.) Fossil fuel dependence has an impact on which of the following?
A.) the environment
3.) How much money does the United States lose each year due to the non-local resource trade deficit?
D.) 300 billion
Explanation:
In solar thermal generators. they depends solely on sun's energy for its energy generation and distribution. <em>The energy generation made use of solar cells which are cells joined together in series which helps in trapping the sun's energy and converting them into electric charges for its onward transmission to the circuit and battery leading to electricity. </em>
On the other-hand, over dependence on fossil fuel causes environmental issues like global warming due to gas flaring etc.
True bred organism will have a pure genotype (genetic expression of trait ) and will only produce a certain phenotype. True bred is sometimes also called pure bred . If you take two true breeding pea planfs - say one is yellow and one that id green - and cross them, you would end up with only yellow offspring.
Answer:
0.027 cubic ft/min
Explanation:
Volume of water is V=V(t) Depth of water is h=h(t)
The relationship between V and h is
V=π/3.r2.h
Let
h0= the height of the cylinder = 24ft, r0= the radius of the opening = 10ft.
Since water level (h) rise with respect to flow rate we find an expression for r and substitute into V
r/h = r0/h0= 10/24 = 5/12
r = (5/12) h,
Substitute for r in V
so,
V=1/3.π.(h2)square = 1/3.π. 25/144.(h3)
When
h= 16ft
and dV/dt = 20ft3/min
,
dV/dt =1/3*π*25/144*h3*(dh/dt)
20ft3/min= 1/3*π* 25/144*h3*(dh/dt)
20 = 1/3*π*(16)3.(dh/dt)
Make dh/DT subject of formula
dh/dt=(20*3*144)/(25*π*4096) = 8640/321740.8
=
dh/dt= 0.027 ft3/min
