<span><span>A. </span>Length: km<span>
The Si units of all the left measurements are true thus, in length the typical
and standard SI unit is meter. SI units, also called as International Standard
of Units, is composed of the following systematized units of physical measure
which include, mole (amount of substance), candela (luminous intensity), kelvin
(temperature), ampere (electric current), second (time), kilogram (mass), and meter
(length). Hence, these measures spheres in multiplication or division by power
of 10, increase or decrease in measure.</span></span>
Answer: 12 J
Explanation:
Work = force*displacement
Work= 3N*4m= 12 Joule
A population decline follows a period of overshooting.
Answer:
a )
Density = mass / volume
= 3500 / 3.5
= 1000 kg m⁻³
b) gauge pressure = h d g
h is height of water column
d is density
g is acceleration due to gravity
Put the values in the equation above
Gauge pressure = .15 x 1000 x 9.8
= 1470 Nm⁻²
Atmospheric pressure = 100000 Nm⁻²
Total pressure
= 101470 N m⁻²
c ) Volume of water displaced = volume of object
= 55 x 10⁻⁶ m³
Buoyant Force = weight of displaced water
= 55 x 10⁻⁶ x 1000 x 9.8
= .539 N.
