speed rate = 4 yards per minute (yds/min)
Distance = 20 yards
time = t
Apply the formula:
time = Distance / speed rate
Replacing:
Time = 20 yards / 4 yds/min = 5 minutes
Answer:
V = 38.0 L
Explanation:
As we know that number of moles will remains conserved inside the balloon
so we will have

here we have

now we have







Copernicus started a scientific revolution with his theory that, D the Earth revolved around the sun.
Answer:
Option C
Explanation:
v= u + at
20 = 5 + a(5)
15= a(5)
a= 3 m/s²
Force = mass × acceleration
= 10 × 3
= 30 N