Answer:These contractile elements are virtually identical to skeletal muscle. ... (a) Cardiac muscle cells have myofibrils composed of myofilaments arranged in sarcomeres, ... The refractory period is very long to prevent the possibility of tetany, a ... At this point, the calcium ion channels close and K+ channels open, allowing outflux ..
Explanation:
<span>He should lower his intake of red meats and fats, such as butters and beef. These foods contain high levels of LDL cholesterols which can cause atherosclerosis, among other diseases. Limiting the intake of meat and fats can help ameliorate this risk.</span>
Answer:
1. Down Syndrome - Caused by an extra copy of chromosome 21
2. Klinefelter Syndrome - Boys with extra x chromosome(s)
3. Turner Syndrome - Girls lacking a second x chromosome
The formula for the work done in emptying a tank is this:
W = ωyV
where
ω is the specific weight
y is the center of gravity
V is the volume of the liquid
The specific weight can be calculated using the formula
ω = ρg
where
ρ is the density
g is the acceleration due to gravity
Solving for ω
ω = 817.15 kg/m3 (9.81 m/s2)
ω = 8016.24 N/m3
The center of gravity of a completely filled cylindrical tank is just 1/2 of the height. So,
y = 3 cm
The volume of the kerosene is just the volume of tank. Using the formula for the volume of a cylinder
V = πr²h
V = π (3²) (6)
V = 54π m³
Therefore, the word done is
W = 8016.24 (6) (54π)
W = 8159538.47 J or
W = 8.16 MJ
