Hi there!
Assuming the track is frictionless:
Cancel out the masses and rearrange to solve for velocity:
Plug in the given height and let g = 9.8 m/s²:
Change a speed of 72.4 miles per hour to its equivalent in meters per second.
1 answer:
Answer:
Speed in meter/sec will be 32.1777 m /sec
Explanation:
We have given speed = 72.4 miles per hour
We have to convert this speed in meter per second
We know that 1 miles = 1.6 km
So 72.4 miles = 72.4×1.6= 115.84 km
We also know that 1 km = 1000 m
So 115.84 km
We know that 1 hour = 60×60 = 3600 sec
So
You might be interested in
Answer:
22.2 m/s
Explanation:
First, we need to convert km to m by multiplying by 1000. This means that the car traveled 320 000 meters.
Next, we convert hours to minutes by multiplying by 3600 (the number of seconds in an hour). This means that overall, the car traveled 320 000 m in 14 400 seconds.
The average speed can be found by using the equation . After substitution, this gives the fraction
, which reduces to 22
m/s, or about 22.2 m/s.
The pressure drop in pascal is 3.824*10^4 Pascals.
To find the answer, we need to know about the Poiseuille's formula.
<h3>How to find the pressure drop in pascal?</h3>- We have the Poiseuille's formula,
- where, Q is the rate of flow, P is the pressure drop, r is the radius of the pipe, is the coefficient of viscosity (0.95Pas-s for Glycerin) and l being the length of the tube.
- By substituting values and rearranging we will get the pressure drop as,
Thus, we can conclude that, the pressure drop in pascal is 3.824*10^4.
Learn more about the Poiseuille's formula here:
#SPJ4