A booklet is a small book—with fewer pages and smaller dimensions than a “real” book, and usually a paper cover.
Answer:
A
Explanation:
Because D is definitely true and there is only one false sentence what means if that non of B or C is false because if one is false so other one needs to be too.
If we ignore air resistance, as we always do,
there is no horizontal acceleration.
Gravity acts only in the vertical direction, and
no other forces act on the ball after the punt.
Answer:
5 solar days is 432,000 seconds
Explanation:
One solar day is the time the meridian of the Sun crosses passes through a specified place.
Due to the elliptical orbit of the Earth round the Sun, one average solar day on Earth is equivalent to 24 hours with some days longer and some days shorter each by a few minutes
Therefore, we have;
5 solar days = 5 × 24 hours × 60 minutes/hour × 60 seconds/minute = 432,000 seconds
5 solar days = 432,000 seconds
Answer:
1.75 atm
Explanation:
Mass is conserved, so the mass flow before the constriction equals the mass flow after the constriction.
m₁ = m₂
ρQ₁ = ρQ₂
Q₁ = Q₂
v₁A₁ = v₂A₂
v₁ πd₁²/4 = v₂ πd₂²/4
v₁ d₁² = v₂ d₂²
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
Writing v₂ in terms of v₁:
P₁ + ½ ρ v₁² = P₂ + ½ ρ (v₁ d₁²/d₂²)²
P₁ + ½ ρ v₁² = P₂ + ½ ρ v₁² (d₁/d₂)⁴
P₁ + ½ ρ v₁² (1 − (d₁/d₂)⁴) = P₂
Plugging in values:
P₂ = 2 atm + ½ (1000 kg/m³) (4.4 m/s)² (1 − (3.3 cm / 2.4 cm)⁴) (1 atm / 1.013×10⁵ Pa)
P₂ = 1.75 atm
