-- The circumference of the track is (2 · π · radius).
Circumference = (2 · π · 1.67m) = 10.49 meters .
-- The train's speed is (31.5 cm) / (10.49 m) of the track's circumference, per second. That's ...
(31.5 cm) · (1m / 100cm) / (10.49 m / circumference) =
(31.5 / 100 · 1,049) (cm · m / cm · m) =
= 0.030 of the circumference per second.
The train performs 0.03 revolution per second.
It takes (1/0.03) = about 33.3 seconds to complete one revolution of the track.
Answer:
A vector is a quantity that has both magnitude and direction. DEF: A scalar is a quantity that has magnitude but NO direction.
Explanation:
Answer:
Average speed will be 30.30 m/sec
Explanation:
We have distance d = 10 km
Time to reach university to home = 20 min
We know that 1 hour = 20 min
So 20 minute ![\frac{20}{60}=0.33hour](https://tex.z-dn.net/?f=%5Cfrac%7B20%7D%7B60%7D%3D0.33hour)
We have to find average speed
We know that distance = speed × time
So ![speed=\frac{distance}{time }=\frac{10}{0.33}=30.30km/hour](https://tex.z-dn.net/?f=speed%3D%5Cfrac%7Bdistance%7D%7Btime%20%7D%3D%5Cfrac%7B10%7D%7B0.33%7D%3D30.30km%2Fhour)
So the average speed will be 30.30 m/sec
Applying Concepts: What happens to the volume of a balloon that is taken outside on a cold winter day? ... When the air particles inside the balloon become cooler, they slow down and do not hit the inside of the balloon as often, so the balloon's volume decreases. this is google answer sorry i didnt know how to word it