Answer
given,
diameter = 6 m
depth = h = 1.5 m
Atmospheric pressure = P₀ = 10⁵ Pa
a) absolute pressure
P = P₀ + ρ g h
P = 10⁵ + 1000 x 10 x 1.5
P = 1.15 x 10⁵ Pa
b) When two person enters into the pool
mass of the two person = 150 Kg
weight of water level displaced is equal to the weight of person
ρ V g = 2 m g
V = 0.3 m³
Area of pool =
=
= 28.27 m²
height of the water rise
h = 0.0106 m
pressure increased
P = ρ g h
P = 1000 x 10 x 0.0106
P = 106.103 Pa
Answer:
0.2 Hz
Explanation:
f= 1/T where f= frequency and T=period
f= 1/5 sec
=0.2 Hz
Answer:
T = T
Explanation:
The period of a simple pendulum is given by the formula
Where
l - length of the pendulum
g - acceleration due to gravity
The dimension of the physical quantities are given by,
t - T
l - L
g - m/s² - LT⁻²
Substituting in the above equation,
T = 2π √(L / LT⁻²)
Considering only the dimensional units in the equation
T = √(L / LT⁻²)
T = T
This shows that the formula for a simple pendulum is dimensionally consistent, T = T
<span>a force that does not involve physical contact between two objects ic called field force.</span>
The instrument used to measure atmospheric pressure is called a Barometer.