As galáxias são geralmente maiores do que os aglomerados de estrelas. Como disse Geller ~ As galáxias são como as cidades em que vivem os aglomerados de estrelas. As galáxias podem ter cerca de milhares ou mais aglomerados de estrelas ~
I hope it helps ~
Carbon-14 is a naturally occurring carbon isotope.
Carbon-14 has a known half-life.
Carbon-14 is present in all living organisms.
Yes, the volume of the cylinder will remain constant. As the radius decreases, the height will increase to make sure that the volume is kept the same.
We have been given a value of dr/dt and are required to find dh/dt
Because the volume is constant, we can plug it into the formula for the volume of the cylinder and rearrange it to make h the subject:
128 = πr²h
h = 128/πr²
Now we differentiate both sides:
dh/dr = -256/πr³
Applying the chain rule:
dh/dt = dh/dr x dr/dt
dh/dt = (-256/πr³) x -0.05
dh/dt = 64/5πr³; substituting the value of r
dh/dt = 64/5π(1.5)³
dh/dt = 1.21 in/sec
After 4 hrs, the vehicles traveled 256 miles.
<u>Explanation</u>:
Two vehicles traveling at a rate of 40 and 50 miles per hour.
A convertible and a minivan leave a highway junction at the same time.
The convertible travels west at 40 miles per hour = (40/ hr) / 4 = 160 miles
the minivan travels north at 50 miles per hour = (50/hr) / 4 = 200 miles
how far apart are they after 4 hours is = 256 miles.
Answer:
A derived unit is called so because it is the product of two more basic units. The basic unit of area is the cubic meter (m³) for volume. By derived unit, it refers to any given quantity which cannot be measured directly with any device. For eg., We can't measure density of a substance with a rule, or scale, or bucket.