Answer:
48.732
Explanation:
Just move the denominator 3 times for the 0s in 1000.
A spring balance measures the weight of an object by opposing the force of gravity acting with force of an extending spring. May be used to determine mass as well as weight by recalibrating the scale. Some spring balances are available in gram or kilogram markings and are used to measure the mass of an object. Spring balances consist of a cylindrical tube with a spring inside. One end (at the top) is fixed to an adjuster which can be used to calibrate the device. The other end is attached to a hook on which you can hang masses etc.
Answer:
-0.005 L
Explanation:
Ideal gas law:
PV = nRT
where P is absolute pressure,
V is volume,
n is number of moles,
R is the gas constant,
and T is absolute temperature.
If P and n are held constant, then:
nR/P = nR/P
V/T = V/T
Given V₁ = 0.06 L, T₁ = 33.0 C = 306.15 K, and T₂ = 5.00 C = 278.15 K:
0.06 / 306.15 = V / 278.15
V = 0.055
The change in volume is:
0.055 L − 0.06 L = -0.005 L
An ultrasound is a form of medical sonography where ultrasonic waves are pulsed into the body and the bounce back of the waves are then measured to visualize the body internals
Answer:
0.554 m³/s
Explanation:
Write velocity in terms of volumetric flow:
Q = vA
Q = v πd²/4
v = 4Q/(πd²)
Now use Bernoulli equation:
P₁ + ½ ρ v₁² + ρgh₁ = P₂ + ½ ρ v₂² + ρgh₂
Since h₁ = h₂:
P₁ + ½ ρ v₁² = P₂ + ½ ρ v₂²
Substituting for velocity:
P₁ + ½ ρ (4Q/(πd₁²))² = P₂ + ½ ρ (4Q/(πd₂²))²
P₁ + 8ρ Q²/(π²d₁⁴) = P₂ + 8ρ Q²/(π²d₂⁴)
P₁ − P₂ = (8ρQ²/π²) (1/d₂⁴ − 1/d₁⁴)
Plugging in values:
7120 Pa − 5340 Pa = (8 (821 kg/m³) Q²/π²) (1/(0.5622 m)⁴ − 1/(0.937 m)⁴)
Q = 0.554 m³/s