Answer:
L = 6.032 m
Explanation:
The resistance of a wire is given by
R = ρ L / A
done ρ is the resistivity of matter, L is the length and A is the area
L = R A /ρ
the area of a circle is
A = π r² = π d² / 4
L = R π d² / 4ρ
in the problem they indicate the resistance of 240 Ω, the diameter of 0.040 mm and the resistivity of 5 10⁻⁷ Ω / m
Let's reduce the diameter to SI units
d = 0.040 mm (1 m / 1000 mm) = 4 10⁻⁵ m
let's calculate
L = 240 π (4 10⁻⁵) 2 / (4 5 10⁻⁷)
L = 6.0319 m
L = 6.032 m
I believe the answer is chemical reactivity because: Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties.
5) 204 meters
6)
A) 150 miles
B)241 km
Answer:
Y component = 32.37
Explanation:
Given:
Angle of projection of the rocket is, 
Initial velocity of the rocket is, 
A vector at an angle
with the horizontal can be resolved into mutually perpendicular components; one along the horizontal direction and the other along the vertical direction.
If a vector 'A' makes angle
with the horizontal, then the horizontal and vertical components are given as:

Here, as the velocity is a vector quantity and makes an angle of 33.6 with the horizontal, its Y component is given as:

Plug in the given values and solve for
. This gives,

Therefore, the Y component of initial velocity is 32.37.