Explanation:
Since, ∆ = − 0, we can find what temperature is required to cause the volume to be 0.15% larger than it is at 20℃: = 0 + ∆ = 20℃ + 29.4℃ = 49.4℃. Answer: = 49.4℃.
Acceleration = (change in speed) / (time for the change)
Change in speed = (speed at the end) - (speed at the beginning)
Change in speed = (54 km/hr) - (32 km/hr) = 22 km/hr
Acceleration = (22 km/hr) divided by (the time it takes to change the speed)
Answer:
Explanation:
Given data
Change in velocity Δv=14 m/s
Acceleration a=1000 m/s²
Required
Time t
Solution
We know that the acceleration is given by the velocity change over time interval.Therefore
a=Δv/t
Substitute the given values to find time t
So
F = ma
4 = 40a
a = 0.1 m/s
v = u + at
-10 = 65 - 0.1t
t = 750s = 12.5 min