Answer:
Maximum height reached = 39.39 m
Explanation:
At maximum height
We have equation of motion v² = u² + 2as
Consider the vertical motion of baseball,
Initial velocity, u = 32.1sin60=27.8 m/s
Final velocity, v = 0 m/s
Acceleration, a = -9.81 m/s²
Substituting
v² = u² + 2as
0 = 27.8² + 2 x (-9.81) x s
s = 39.39 m
Maximum height reached = 39.39 m
Well,
First of all, this isn't physics in my opinion; this is Astronomy.
In the mesosphere, there exists a high concentration of ions. This region is called the ionosphere.
Answer:
Yes true SI unit is better as it applies same over international level ..
Part A:
To answer this item, we need to convert the given revolutions per minute in speed expressed as miles per hour. In order to do so, we need to use the dimensional analysis and the appropriate conversion factor.
We calculate the circumference that is covered by the wheel.
C = πD
where C is the circumference and D is the diameter.
Substitute the known values,
C = π(26 in) = 81.68 inches
The speed tested is calculated below.
s = (81.68 inches/rev)(480 rev/min)(1 mil/63360 inches)(60 min/1 hr)
s = 37.127 mil/h
<em>ANSWER: 37.127 mil/h</em>
Part B:
Similar to what was done in Part A, the setting of the balancer is calculated below,
setting = (80 mil/h)(1h/60 min)(63360 in/1 mil)(1 rev/81.68 in)
setting = 1034.23 rev/min
<em>ANSWER: 1034.23 rev/min</em>
The 'North pole' of any magnet is the one that would be attracted to the Earth's North magnetic pole. In that sense, they are just labels that identify the opposite magnetic force produced at each end of the magnet. The Earth'smagnetic field also has poles, North and South. more at study.com
