which tool would you use to measure the amount of rainfall? a. graduated cylinder b. stopwatch c. scale d. thermometer
2 answers:
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Answer:
IMA of given system = 
Explanation:
- The "Ideal Mechanical advantage" (IMA) of given pulley is
.
- Ideal Mechanical advantage of a system is defined by the ratio of achieved or output force to the implied force. In the pulley system above, output force is the resistant force denoted by
. The input force is analogous or equivalent to the effort applied i.e.
.
- Hence by dividing these two forces we calculate the IMA of the above mentioned pulley system which is
. - Its mathematical reference would be:
IMA = 
Hubble time in cosmology means the estimated age of the universe and the best calculation for it is T=1/H, where H is the Hubble constant
When an object is falling and reaches a constant velocity, the net force on the object is <em>zero</em> (it's not accelerating), and the weight of the object is equal to <em>the force of air resistance against the object</em>. (choice-D)
Data given:
Δx=1500m
v=330m/s
t=?
Formula:
V=Δx/t
Solution:
t=1500m/330m/s
t=4.5s