Less of a glass of water because a glass of water holds approximately 250 mil-liters of water
When the ball on a spring is replaced by a smaller ball with half the mass : The period decrease by 29%
<h3>Calculate the Period </h3>
We will apply the formula below to calculate period
T = 
where :
T₁ / T₂ = 
where m₂ = m₁ / 2
Therefore :
T₂ = 
= 0.71 T
Hence we can conclude that the period will decrease by 29% ( i.e 100 - 71 ).
Learn more about Period calculation : brainly.com/question/10728818
Answer:
Around 2.8212 sec
Explanation:
Given the eqn x=1/2at^2+vot
your vo=0
39=1/2(-9.8)t^2
=7.95=t^2
=2.82sec
Answer:
0 (Zero)
Explanation:
Definition of work done states that ,
Work done on an object is the force applied on that object in the direction of Displacement of the object .
means that ,
W = F.dS (Dot product of Force and displacement)
When the wall is acted upon by the force of 20 N , Wall does not move ,
Thus , displacement of the wall is zero.
So, W = 20×0 = 0.
Thus, Work done on the wall is zero.
