Answer:
volume of bubble is 2.736 cm³
Explanation:
given data
height h = 35 m
volume = 1.98 cm³ = 1.98 ×
m³
temperature t1 = 5.2°C
temperature t2 = 16.5°C
to find out
volume of the bubble
solution
first we find pressure depth 35 m
pressure = Pt + ρ × g × h ................1
here Pt is pressure at top = 1.013 ×
Pa and ρ density of water
put here value in equation 1
pressure = Pt + ρ × g × h
pressure = 1.013 ×
+ 1000 × 9.8 × 35
pressure = 444300 Pa
so
from gas equation
p1×v1 / t1 = pt×v2 / t2
put here value
v2 = p1×v1×t1 / pt×t1
v2 = 444300× 1.98 ×
× 5.2 / ( 1.013 ×
× 16.5 )
v2 = 2.736 ×
m³
so volume of bubble is 2.736 cm³
Answer:
the internal energy of the mixture at final state = 238kJ/kg
Explanation:
Given
V= 0.6m³
m=5kg
R=0.287kJ/kg.K
T=320 K
from ideal gas equation
PV = nRT
where P is pressure, V is volume, n is number of mole, R is ideal gas constant , T is the temperature.
Recall, mole = mass/molar mass
attached is calculation of the question.
The Moon has 1/6 the gravity of the Earth.
<span>A centripetal force is a force which keeps an object moving in a circle. When the ball is at the top position, let's assume that the speed v is such that the gravitational force is precisely equal to the required centripetal force to keep the ball moving around in a circle. Then the string will not go slack.
centripetal force = force of gravity on the ball
m v^2 / r = m g
v^2 / r = g
v^2 = g r
v = sqrt { g r }
v = sqrt { (9.80~m/s^2) (0.7 m) }
v = 2.62 m/s
The minimum speed of the ball at the top position is 2.62 m/s</span>
He main boat is sending some wave that is reflected back to the sender when it collide with an object ( the frequency differs which is an indication of the distance separating the sender and receiver)