The answer is true to your question
Refer to the diagram shown below.
The following discussion assumes a simplistic analysis that ignores air resistance and variations in the terrain that the missile travels over.
Let the launch velocity be V₀ at an angle of θ relative to the horizontal.
The horizontal component of velocity is V₀ cosθ.
If the time of flight is
, then
where r = the range of the missile.
Also, the time, t, when the missile is at ground level is given by
where g = acceleration due to gravity.
t = 0 corresponds to when the missile is launched. Therefore
Therefore
Typically, θ=45° to achieve maximum range, so that
This analysis is more applicable to a scud missile rather than a powered, guided missile.
Answer:
Usually, θ=45°
Answer: no definite shape (takes the shape of its container)
no definite volume.
particles move in random motion with little or no attraction to each other.
highly compressible.
Explanation:
Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form.
Answer:
0.0979 kg/m³
Explanation:
Treating air as an ideal gas:
PV = nRT
n/V = P/RT
Density depends on both pressure and temperature. If we assume the temperature is constant, we can say that density is directly proportional to pressure.
ρ = kP
ρ/P = k
Writing a proportion:
(1.26 kg/m³) / (7720 mmHg) = ρ / (600 mmHg)
ρ = 0.0979 kg/m³
Answer: C
Explanation:
Chemical formula of any element, chemical or compound contains the symbol of the elements involved, the number of molecules and the number of atoms present as a subscript.
For instance, Nacl is a chemical formula for sodium chloride. The chemical combination of sodium and chlorine. While Hcl is a chemical formula for hydrochloric acid - the chemical combination of hydrogen and chlorine.
According to the question given above,
The symbol of each element in the substance is one of the part of the chemical formula.